ICU-20975 BRS ICU 66rc - J API signature, API change report and serialization test data
- Added ICU 66.1 serialization test data and removed ICU 61.1 serialization test data.
- Added ICU 66 API signature file and removed ICU 56 API signature file
- Updated API change report
diff --git a/icu4j/APIChangeReport.html b/icu4j/APIChangeReport.html
index b1849df..b8d2577 100644
--- a/icu4j/APIChangeReport.html
+++ b/icu4j/APIChangeReport.html
@@ -2,31 +2,31 @@
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<!-- © 2019 and later: Unicode, Inc. and others. -->
+<!-- © 2020 and later: Unicode, Inc. and others. -->
<!-- License & terms of use: http://www.unicode.org/copyright.html#License -->
-<title>ICU4J API Comparison: ICU4J 65.1 with ICU4J 66.0.1</title>
+<title>ICU4J API Comparison: ICU4J 65.1 with ICU4J 66.1</title>
</head>
<body>
-<h1>ICU4J API Comparison: ICU4J 65.1 with ICU4J 66.0.1</h1>
+<h1>ICU4J API Comparison: ICU4J 65.1 with ICU4J 66.1</h1>
<hr/>
<h2>Removed from ICU4J 65.1</h2>
<p>(no API removed)</p>
<hr/>
-<h2>Deprecated or Obsoleted in ICU4J 66.0.1</h2>
+<h2>Deprecated or Obsoleted in ICU4J 66.1</h2>
<p>(no API obsoleted)</p>
<hr/>
-<h2>Changed in ICU4J 66.0.1 (old, new)</h2>
+<h2>Changed in ICU4J 66.1 (old, new)</h2>
<p>(no API changed)</p>
<hr/>
-<h2>Promoted to stable in ICU4J 66.0.1</h2>
+<h2>Promoted to stable in ICU4J 66.1</h2>
<p>(no API promoted to stable)</p>
<hr/>
-<h2>Added in ICU4J 66.0.1</h2>
+<h2>Added in ICU4J 66.1</h2>
<h3>Package com.ibm.icu.lang</h3>
<ul>
@@ -71,6 +71,6 @@
</ul>
<hr/>
-<p><i><font size="-1">Contents generated by ReportAPI tool on Tue Dec 03 17:17:51 EST 2019<br/>© 2019 and later: Unicode, Inc. and others. License & terms of use: <a href="http://www.unicode.org/copyright.html#License">http://www.unicode.org/copyright.html#License</a></font></i></p>
+<p><i><font size="-1">Contents generated by ReportAPI tool on Mon Feb 24 21:44:48 EST 2020<br/>© 2020 and later: Unicode, Inc. and others. License & terms of use: <a href="http://www.unicode.org/copyright.html#License">http://www.unicode.org/copyright.html#License</a></font></i></p>
</body>
</html>
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat
deleted file mode 100644
index 00b4369..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4f80cd388edcf9e4fd9b337d182910a93c3d9feea19391d2189832f373a567f3
-size 1114
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.InvalidFormatException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.InvalidFormatException.dat
deleted file mode 100644
index d3b18a8..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.InvalidFormatException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:9de66628521edc985e7f2b3f2c150e305dd71a9bebcdc23f3442ab376cb632ad
-size 3177
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.OlsonTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.OlsonTimeZone.dat
deleted file mode 100644
index 9f1890f..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.OlsonTimeZone.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2bfa6e2f916fc828fd939286e13c5d2736a73b6cb98906592c37b343ee32546c
-size 20899
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.RelativeDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.RelativeDateFormat.dat
deleted file mode 100644
index 357d814..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.RelativeDateFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:016fa24b518b8bb5bf9224b238a336f4567df9aace3dc8f9310f65ead752b1f6
-size 11741
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneAdapter.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneAdapter.dat
deleted file mode 100644
index 9f90c24..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneAdapter.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ae5e9ab8e2df89635c4e3f36084c6a8ea7339587e8ca0b4b27dbfd3067a264e2
-size 21332
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat
deleted file mode 100644
index 09409f6..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:70dae8d2ef1821146420cff67e5c3866e4147eec4fdb59d59788bf85f725ede9
-size 1134
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ArabicShapingException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ArabicShapingException.dat
deleted file mode 100644
index 783a4d2..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ArabicShapingException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d533a36cc0d76933c046e95d6f6621b7136539fa2cdcb668d89de6c224ffe95a
-size 3177
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormat.dat
deleted file mode 100644
index 2a114da..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:17afd45aab575351b10f0d7b445deaa7f6bac97d380d6d0e01df2dfd61500be4
-size 91840
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat
deleted file mode 100644
index fde98c9..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:93a9f6baba18a863415072255297d77928bb5ca35c69f7e9d1391205e54e62af
-size 39168
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormat.dat
deleted file mode 100644
index b2b29f9..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7b8f8aedb933657f73dd73a49b2f4cc6bdbe5af60425fa138a7a2b8c8e2ab9ad
-size 46875
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormatSymbols.dat
deleted file mode 100644
index 2b27451..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormatSymbols.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e98bafef6f92abdf5906efac20106b74e7002ef2f985af90a910c027d3285a1a
-size 31524
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalFormat.dat
deleted file mode 100644
index a3a7522..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:aacd027f4e48e4105a08016840640678fe5b0bbaefda513e13e37d3917baae50
-size 10974
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormat.dat
deleted file mode 100644
index dab0744..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:eb9a9e35dd78c1295ba4914fb0cebf578f59c8360300530d50813ba15d262279
-size 11288
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormatSymbols.dat
deleted file mode 100644
index 1b7cf48..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DecimalFormatSymbols.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e6a985e4a10117f442bba5a37392225ee36ec4cb02ad750561c15c9a3b5a2734
-size 7259
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MeasureFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MeasureFormat.dat
deleted file mode 100644
index 6d91c78..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MeasureFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4fde081cf28ffd69df197f9b110155d1daab4bcf686cd6ea1604814ca4a1c956
-size 3246
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.NumberFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.NumberFormat.dat
deleted file mode 100644
index 4a3321f..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.NumberFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c4158486c993fd2af97cebe59366262978be8cff8c67dc026667477235a8238c
-size 3699
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.SimpleDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.SimpleDateFormat.dat
deleted file mode 100644
index 1f46885..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.SimpleDateFormat.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:5f4e4cf79944d20920b1c9278f3b6692586f52dd6ffefe36f514e0d137457b12
-size 90751
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.StringPrepParseException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.StringPrepParseException.dat
deleted file mode 100644
index 6afc655..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.StringPrepParseException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8a128c4935e8cf099bc5bb4889ef064df6f70c0ab1f1a99698a0a945114e02d1
-size 7712
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.BuddhistCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.BuddhistCalendar.dat
deleted file mode 100644
index f43d677..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.BuddhistCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4cda3d7cfafe054fadb7168027ab1340e39752705606c6e950c7614440ecaf55
-size 2672
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.Calendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.Calendar.dat
deleted file mode 100644
index 2aaa6d1..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.Calendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1d375b82c172b54df34bc9a34e11021aaa632cdeabf65d688cffe582fdbf8860
-size 4090
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ChineseCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ChineseCalendar.dat
deleted file mode 100644
index 66e63d8..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ChineseCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:b33b7db9e2b236b08fec3c6b143013b58bd86b76412fc581d93922672d022266
-size 3152
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.CopticCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.CopticCalendar.dat
deleted file mode 100644
index 05290f5..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.CopticCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c85007184bbe4c3900bc2ace639f81cb1c9eccf3231aadae95224598acd337b8
-size 3328
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DangiCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DangiCalendar.dat
deleted file mode 100644
index ebd6d3a..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DangiCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:964903236d5c4d294608f50fd2620593d6fd44a7c754a0477145954542bde077
-size 3538
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.EthiopicCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.EthiopicCalendar.dat
deleted file mode 100644
index 004a394..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.EthiopicCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7c85e43ae183896910a16e9cf30fe43d1979f41edb411c28fc123bd94810dd60
-size 2621
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.GregorianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.GregorianCalendar.dat
deleted file mode 100644
index 5d4c76a..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.GregorianCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a393395853dc448d3fdeedbc84f514b0da492028e9ef5774a785ba706426633b
-size 4099
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.HebrewCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.HebrewCalendar.dat
deleted file mode 100644
index 5d6c431..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.HebrewCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e0d992fd31bbf1799d5e79c8cfe2d9ed12c7166e1c75647216bd71a006fb7ca0
-size 3647
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat
deleted file mode 100644
index 6086f7d..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:6d730737a740900b3daea5296c2168d0f6d0d2704edceb24c040dec7279cdab6
-size 1674
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUException.dat
deleted file mode 100644
index 7570a79..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:24e34d57f74769611c2ed746c9c809f53793c0133c79c9e4e69f2a531f038e45
-size 1579
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUUncheckedIOException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUUncheckedIOException.dat
deleted file mode 100644
index 01ab9d7..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ICUUncheckedIOException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:1a0912fd8fdc5e51b3b6c2597f3c1453f63fe980d2b46fd533e6455ca591a107
-size 1612
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IllformedLocaleException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IllformedLocaleException.dat
deleted file mode 100644
index a00b77a..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IllformedLocaleException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:c5c0f622bb099bd386112a41476f7222a13cf7f326183d6c8bf418de78b06b1f
-size 1184
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IndianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IndianCalendar.dat
deleted file mode 100644
index c4f8434..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IndianCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3726856c09be8995c87e289eea63f5320230c5f78f2923a18a846ad2cd856edc
-size 2511
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IslamicCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IslamicCalendar.dat
deleted file mode 100644
index 445077e..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.IslamicCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:607ee068db504f0c0034daabbdf51d534129bc65bb10d2d98461acd3da640857
-size 3876
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.JapaneseCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.JapaneseCalendar.dat
deleted file mode 100644
index 13b267f..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.JapaneseCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:25531d0503ef12acd5b4d60268fa7cae84f06231d0315867eb637df7be2522be
-size 2750
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.PersianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.PersianCalendar.dat
deleted file mode 100644
index e764063..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.PersianCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:dad53ea259fd7ec2ecc00c0f868b11275742f041c450c00014982c484e0ac024
-size 3664
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TaiwanCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TaiwanCalendar.dat
deleted file mode 100644
index 6a7cc00..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TaiwanCalendar.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:227687eeff821f0c4cfe3eb44447ea9b8563bd565941881dedfb6991d32aebfc
-size 2821
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.UResourceTypeMismatchException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.UResourceTypeMismatchException.dat
deleted file mode 100644
index 9b80d9b..0000000
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.UResourceTypeMismatchException.dat
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:71914581933b62c6041a6dfec711dee75e801bde7d5f6b0344478f1031dafb67
-size 3242
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.DateNumberFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.DateNumberFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.DateNumberFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.DateNumberFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat
new file mode 100644
index 0000000..67c6913
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.IllegalIcuArgumentException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e1bdb43575986f04879436c7032ff92e506c3ae070539a8781cb611dd1f10a9e
+size 1114
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.InvalidFormatException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.InvalidFormatException.dat
new file mode 100644
index 0000000..cdaa79e
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.InvalidFormatException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7602f49fcb8784ab074666e1241985d46f56d0218b1bfd700d235e6870e5d023
+size 3177
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.JavaTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.JavaTimeZone.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.JavaTimeZone.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.JavaTimeZone.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.OlsonTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.OlsonTimeZone.dat
new file mode 100644
index 0000000..92f572a
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.OlsonTimeZone.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fe1706b855eaadddbcee116e20c512f1a0f2185aebfa86da3347271e332f1bbf
+size 20943
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.RelativeDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.RelativeDateFormat.dat
new file mode 100644
index 0000000..5a4b0e8
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.RelativeDateFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:58febb40aa10387287550f83dca0e85fdba396af1bfd557a5a8316af565501d8
+size 11741
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TZDBTimeZoneNames.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TZDBTimeZoneNames.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TZDBTimeZoneNames.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TZDBTimeZoneNames.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneAdapter.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneAdapter.dat
new file mode 100644
index 0000000..87cbd3c
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneAdapter.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ded87a3e585807efdd7bf104ca334070011db65c35c686f72a542c18e6c95512
+size 21376
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneGenericNames.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneGenericNames.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneGenericNames.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneGenericNames.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneNamesImpl.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneNamesImpl.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.TimeZoneNamesImpl.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.TimeZoneNamesImpl.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.duration.BasicDurationFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.duration.BasicDurationFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.duration.BasicDurationFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.duration.BasicDurationFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat
new file mode 100644
index 0000000..daf374e
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.locale.LocaleSyntaxException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:25fd3cb3dea42968ae2683846c40ab00f32be405fb2fb772e83673e9190b4da9
+size 1134
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.CustomSymbolCurrency.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.CustomSymbolCurrency.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.CustomSymbolCurrency.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.CustomSymbolCurrency.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.DecimalFormatProperties.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.DecimalFormatProperties.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.DecimalFormatProperties.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.DecimalFormatProperties.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.LocalizedNumberFormatterAsFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.LocalizedNumberFormatterAsFormat.dat
new file mode 100644
index 0000000..7c3cde4
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.LocalizedNumberFormatterAsFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26660775ea9b2b549fcca54d2ae5965cbd5ee0158725a1c066c57344698e711a
+size 187
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.Properties.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.Properties.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.impl.number.Properties.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.impl.number.Properties.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.math.BigDecimal.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.math.BigDecimal.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.math.BigDecimal.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.math.BigDecimal.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.math.MathContext.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.math.MathContext.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.math.MathContext.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.math.MathContext.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.number.SkeletonSyntaxException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.number.SkeletonSyntaxException.dat
new file mode 100644
index 0000000..df992b6
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.number.SkeletonSyntaxException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0eaf13dcc61083eb10f035f39bbd9b1fc561ce323da13d78f46faa16135a4dbc
+size 1149
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ArabicShapingException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ArabicShapingException.dat
new file mode 100644
index 0000000..587552e
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ArabicShapingException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:75fb6f4e755f87d2b276b0909c183f11c111f3f78a08c9586bc7521da47be8b7
+size 3177
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormat$Field.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormat$Field.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.ChineseDateFormat$Field.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormat$Field.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormat.dat
new file mode 100644
index 0000000..47f3e24
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e1f05c04e07f85e7c51c13e94da2b9954ba1a70098e7101273683f108cb5cb96
+size 92019
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat
new file mode 100644
index 0000000..0db2679
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.ChineseDateFormatSymbols.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eb0aa84cc1621688d891fd27c8bbbabf33515fab51bf659843c3c112d17b58e8
+size 39347
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.CompactDecimalFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.CompactDecimalFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.CompactDecimalFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.CompactDecimalFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.CurrencyPluralInfo.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.CurrencyPluralInfo.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.CurrencyPluralInfo.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.CurrencyPluralInfo.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormat$Field.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormat$Field.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateFormat$Field.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormat$Field.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormat.dat
new file mode 100644
index 0000000..06a1ee0
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f10d065d97b569540b84b97f24b61885e688596b05455b77d4ff806e40ad8564
+size 47141
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormatSymbols.dat
new file mode 100644
index 0000000..471e4be
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateFormatSymbols.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:00691c179fe1d4f58c2ead75f30bbd3706a128d387636c60d95869ec4d10b96d
+size 31790
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat$SpanField.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat$SpanField.dat
new file mode 100644
index 0000000..90e024b
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat$SpanField.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6c3f1d37c8e014d9a0ba20e3aa48c55db44c6e1c27d3d569d3c7e1132e3a452f
+size 303
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat.dat
new file mode 100644
index 0000000..d76fcdc
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:068437b6565a5d6f295541617043b4635428a71db5775e3409ed0516a237fd4a
+size 12289
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalInfo$PatternInfo.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalInfo$PatternInfo.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalInfo$PatternInfo.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalInfo$PatternInfo.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalInfo.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalInfo.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.DateIntervalInfo.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DateIntervalInfo.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormat.dat
new file mode 100644
index 0000000..0ba4be6
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e65efd63cc41a73f13206448e1ac1ac8e43ef5bb6ba51d8b7271f7387835c8c2
+size 11289
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormatSymbols.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormatSymbols.dat
new file mode 100644
index 0000000..bf1f880
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.DecimalFormatSymbols.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3396a54452adc2312584e0a1dac1538a1a1e67bb3e03befbc71dfee595daba76
+size 7260
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MeasureFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MeasureFormat.dat
new file mode 100644
index 0000000..c1047a4
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MeasureFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cd3dd0cb11b845b18f1bf34af393b81e17ee63647760534a8cee7087d06aedeb
+size 3247
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MessageFormat$Field.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MessageFormat$Field.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MessageFormat$Field.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MessageFormat$Field.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MessageFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MessageFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.MessageFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.MessageFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.NumberFormat$Field.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.NumberFormat$Field.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.NumberFormat$Field.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.NumberFormat$Field.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.NumberFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.NumberFormat.dat
new file mode 100644
index 0000000..43ba12f
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.NumberFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bd07f1c2e1b6082bf39c0205e31c8f6a33fc7afeb06f871c75943f62f732486b
+size 3757
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.PluralFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.PluralFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.PluralFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.PluralFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.PluralRules.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.PluralRules.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.PluralRules.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.PluralRules.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.RelativeDateTimeFormatter$Field.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.RelativeDateTimeFormatter$Field.dat
new file mode 100644
index 0000000..845c1c1
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.RelativeDateTimeFormatter$Field.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c29d7001cb68f90246bfd3d974e23aabb8bcaace3959401151c4d3a0a2d8aa76
+size 246
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.RuleBasedNumberFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.RuleBasedNumberFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.RuleBasedNumberFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.RuleBasedNumberFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.SelectFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.SelectFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.SelectFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.SelectFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.SimpleDateFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.SimpleDateFormat.dat
new file mode 100644
index 0000000..f276c0f
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.SimpleDateFormat.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8b305d4c1a1b2f34b124e20a25a2d0b7d20e4e4d497d75c6015797f72c8da89d
+size 91017
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.StringPrepParseException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.StringPrepParseException.dat
new file mode 100644
index 0000000..4a37dc8
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.StringPrepParseException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2e0fbedd9c78abe5e7a05a493398eafee924ad414457bab66362131c1d15a481
+size 7712
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.TimeUnitFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.TimeUnitFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.TimeUnitFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.TimeUnitFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.TimeZoneFormat.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.TimeZoneFormat.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.text.TimeZoneFormat.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.text.TimeZoneFormat.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.AnnualTimeZoneRule.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.AnnualTimeZoneRule.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.AnnualTimeZoneRule.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.AnnualTimeZoneRule.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.BuddhistCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.BuddhistCalendar.dat
new file mode 100644
index 0000000..d65709c
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.BuddhistCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a1bb3fede1166585805db73440cd6d26f17a9a64710e1d949191d144f8182cfd
+size 2672
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.Calendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.Calendar.dat
new file mode 100644
index 0000000..2f36981
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.Calendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cc3c769ebf02bcb97a39bd5621385ca3e6027f957928ebfaa0cec9ecbae3bf44
+size 4090
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ChineseCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ChineseCalendar.dat
new file mode 100644
index 0000000..6da66ad
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ChineseCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b2c254a8773345a9ecb984d19627f3f2558571f72ce90aaf0cc7dd3364df3718
+size 3242
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.CopticCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.CopticCalendar.dat
new file mode 100644
index 0000000..34a32e7
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.CopticCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1245d648cd55d3eef2ba58b92bace01d555b8d13a9a55a1e4ec114ddd1990908
+size 3328
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.Currency.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.Currency.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.Currency.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.Currency.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DangiCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DangiCalendar.dat
new file mode 100644
index 0000000..cc92109
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DangiCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9e0aaff1d72a5ff94c13daebbe57b2c1184c5ee6230a40ec384ab8cb8ab7772d
+size 3610
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DateInterval.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DateInterval.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DateInterval.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DateInterval.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DateTimeRule.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DateTimeRule.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.DateTimeRule.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.DateTimeRule.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.EthiopicCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.EthiopicCalendar.dat
new file mode 100644
index 0000000..1120cfe
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.EthiopicCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:57076e58692efddbfeeebf861a0ffca157f8f46e0cc7b15295a19bf83314ad73
+size 2621
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.GregorianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.GregorianCalendar.dat
new file mode 100644
index 0000000..edada41
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.GregorianCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:aa40d6c4d0370bc9768b1ff8610477722e6f350b07bf6c6a0bcb6787a7b67c63
+size 4099
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.HebrewCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.HebrewCalendar.dat
new file mode 100644
index 0000000..8e2f2e1
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.HebrewCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a90f64d7a765e24dbfa2a21a2c4a1ad2fac088d874b97606ff3ae5e732b05405
+size 3683
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat
new file mode 100644
index 0000000..b1d3d9f
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUCloneNotSupportedException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1824c78dfdc9b252519f974303580482facff3a18775dd904c59c9813bb06c74
+size 1674
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUException.dat
new file mode 100644
index 0000000..770b3f6
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d6a9a61f08f19a7dc2f33b599cf1ec00b03a18174a21859fdef53fdd89ade06d
+size 1579
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUUncheckedIOException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUUncheckedIOException.dat
new file mode 100644
index 0000000..e98541a
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ICUUncheckedIOException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7d49a9cd08bb0cb103b7cd8f23363a0a18db4e3c52bb74ba0ee60e42d9f3e74b
+size 1612
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IllformedLocaleException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IllformedLocaleException.dat
new file mode 100644
index 0000000..604f5ce
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IllformedLocaleException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7314516ea66faaecafb7f855d184e9ac2c1b7f04c3f5cd91f95155deb0f0369f
+size 1184
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IndianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IndianCalendar.dat
new file mode 100644
index 0000000..cf8bdee
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IndianCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cadc5f2f5e58d5b10218b60fc941dbff11bf36135f8c6764bf728d80c867e4d4
+size 2511
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.InitialTimeZoneRule.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.InitialTimeZoneRule.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.InitialTimeZoneRule.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.InitialTimeZoneRule.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IslamicCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IslamicCalendar.dat
new file mode 100644
index 0000000..01bbe55
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.IslamicCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b9af95de30c02954bdcd9537b920c844fd0bd6f2b3665f7c459be4fa78d764fe
+size 3876
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.JapaneseCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.JapaneseCalendar.dat
new file mode 100644
index 0000000..4353d84
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.JapaneseCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:84b68cbcaa16ebd038f8a0e226cbdc0b665e38b7d4959158ee5940d5c7f9b013
+size 2750
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.MeasureUnit.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.MeasureUnit.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.MeasureUnit.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.MeasureUnit.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.NoUnit.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.NoUnit.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.NoUnit.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.NoUnit.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.PersianCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.PersianCalendar.dat
new file mode 100644
index 0000000..3e0634d
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.PersianCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b4c842896f1def108bdb94f134191fae2e2246b91b406593640787d2602522f
+size 4600
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.RuleBasedTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.RuleBasedTimeZone.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.RuleBasedTimeZone.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.RuleBasedTimeZone.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.SimpleTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.SimpleTimeZone.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.SimpleTimeZone.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.SimpleTimeZone.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TaiwanCalendar.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TaiwanCalendar.dat
new file mode 100644
index 0000000..33068e2
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TaiwanCalendar.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:814eb24ddb9d8a73bc77b95dad17673bed2017ec5cdeae47a76e46dadd63117b
+size 2911
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeArrayTimeZoneRule.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeArrayTimeZoneRule.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeArrayTimeZoneRule.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeArrayTimeZoneRule.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeUnit.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeUnit.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeUnit.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeUnit.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeZone.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.TimeZone.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.TimeZone.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ULocale.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ULocale.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.ULocale.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.ULocale.dat
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.UResourceTypeMismatchException.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.UResourceTypeMismatchException.dat
new file mode 100644
index 0000000..00b037d
--- /dev/null
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.UResourceTypeMismatchException.dat
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:681f0f0ff36d1f393be7323c4631f09bc72adfc67998328b28f302a23d9d14d2
+size 3242
diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.VTimeZone.dat b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.VTimeZone.dat
similarity index 100%
rename from icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_61.1/com.ibm.icu.util.VTimeZone.dat
rename to icu4j/main/tests/core/src/com/ibm/icu/dev/test/serializable/data/ICU_66.1/com.ibm.icu.util.VTimeZone.dat
diff --git a/icu4j/tools/build/icu4j56.api3.gz b/icu4j/tools/build/icu4j56.api3.gz
deleted file mode 100644
index a66b7cf..0000000
--- a/icu4j/tools/build/icu4j56.api3.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:28c18b52b1d0de31b06a4654135f54d31fe4419ae743b64b15331f20179ecfa9
-size 54665
diff --git a/icu4j/tools/build/icu4j66.api3.gz b/icu4j/tools/build/icu4j66.api3.gz
new file mode 100644
index 0000000..5326e47
--- /dev/null
+++ b/icu4j/tools/build/icu4j66.api3.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:216e6be657d4e3faa8e85e27b73e8dbe2ef57dbf8a88c63c6ab93e88710f7daa
+size 62714
