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| <h2>International Components for Unicode for Java (ICU4J)</h2> |
| <h3>Read Me for ICU4J 50 (50.1.1)</h3> |
| (Last Update: 2012-Dec-14) |
| <hr size="2" width="100%"> |
| |
| <p><b>Note:</b> This is major release of ICU4J. It contains bug fixes and adds implementations |
| of inherited API and introduces new API or functionality. |
| </p> |
| <p>For the most recent release, see the <a |
| href="http://www.icu-project.org/download/"> ICU4J |
| download site</a>. </p> |
| <h3 class="doc">Contents</h3> |
| <ul type="disc"> |
| <li><a href="#introduction">Introduction to ICU4J</a></li> |
| <li><a href="#changes">Changes In This Release</a></li> |
| <li><a href="#license">License Information</a></li> |
| <li><a href="#PlatformDependencies">Platform Dependencies</a></li> |
| <li><a href="#download">How to Download ICU4J</a></li> |
| <li><a href="#WhatContain">The Structure and Contents of ICU4J</a></li> |
| <li><a href="#API">Where to Get Documentation</a></li> |
| <li><a href="#HowToInstallJavac">How to Install and Build</a></li> |
| <li><a href="#HowToModularize">How to modularize ICU4J</a></li> |
| <li><a href="#tryingout">Trying Out ICU4J</a></li> |
| <li><a href="#resources">ICU4J Resource Information</a></li> |
| <li><a href="#timezone">About ICU4J Time Zone</a></li> |
| <li><a href="#WhereToFindMore">Where to Find More Information</a></li> |
| <li><a href="#SubmittingComments">Submitting Comments, Requesting |
| Features and Reporting Bugs</a></li> |
| </ul> |
| <h3 class="doc"><a name="introduction"></a>Introduction to ICU4J</h3> |
| <p>The International Components for Unicode (ICU) library provides |
| robust and |
| full-featured Unicode services on a wide variety of platforms. ICU |
| supports the |
| most current version of the Unicode standard, including support for |
| supplementary characters (needed for GB 18030 repertoire support).</p> |
| <p>Java provides a strong foundation for global programs, and IBM and |
| the |
| ICU team played a key role in providing globalization technology to |
| Java. But because of its long release schedule, Java cannot always keep |
| up with evolving standards. The ICU team continues to extend Java's |
| Unicode and internationalization support, focusing on improving |
| performance, |
| keeping current with the Unicode standard, and providing richer APIs, |
| while |
| remaining as compatible as possible with the original Java text and |
| internationalization API design.</p> |
| <p>ICU4J is an add-on to the regular JRE that provides: |
| </p> |
| <ul> |
| <li><a |
| href="http://www.icu-project.org/userguide/Collate_Intro.html"><b>Collation</b></a> |
| – rule-based, up-to-date Unicode Collation Algorithm (UCA) sorting order<br> |
| For fast multilingual string comparison; faster |
| and more complete than |
| the J2SE implementation</li> |
| <li><a href="http://www.icu-project.org/userguide/charsetDetection.html"><b>Charset |
| Detection</b></a> – Recognition of various single and multibyte charsets<br> |
| Useful for recognizing untagged text data</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/unicodeSet.html"><b>UnicodeSet</b></a> |
| – standard set operations optimized for sets of Unicode characters<br> |
| UnicodeSets can be built from string patterns |
| using any Unicode properties.</li> |
| <li><a href="http://www.icu-project.org/userguide/Transform.html"><b>Transforms</b></a> |
| – a flexible mechanism for Unicode text conversions<br> |
| Including Full/Halfwidth conversions, |
| Normalization, Case conversions, Hex |
| conversions, and transliterations between scripts (50+ pairs)</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/normalization.html"><b>Unicode |
| Normalization</b></a> – NFC, NFD, NFKD, NFKC<br> |
| For canonical text representations, needed for |
| XML and the net</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/dateCalendar.html"><b>International |
| Calendars</b></a> – Arabic, Buddhist, Chinese, Hebrew, Japanese, Ethiopic, Islamic, Coptic and other calendars<br> |
| Required for correct presentation of dates in |
| certain countries</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/formatNumbers.html"><b>Number |
| Format |
| Enhancements</b></a> – Scientific Notation, Spelled-out, etc.<br> |
| Enhancements to the normal Java number |
| formatting. The spell-out format is |
| used for checks and similar documents</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/boundaryAnalysis.html"><b>Enhanced |
| Word-Break Detection</b></a> – Rule-based, supports Thai<br> |
| Required for correct support of Thai</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/compression.html"><b>Unicode |
| Text |
| Compression</b></a> – Standard compression of Unicode text<br> |
| Suitable for large numbers of small fields, |
| where LZW and similar schemes |
| do not apply</li> |
| <li><a |
| href="http://www.icu-project.org/userguide/conversion.html"><b>Charset Conversion</b></a> – Conversion to and from different charsets.<br> |
| Plugs into Java CharsetProvider Service Provider Interface (SPI)</li> |
| |
| </ul> |
| <blockquote> |
| <p><b>Note:</b> We continue to provide assistance to Java, and in some |
| cases, ICU4J support has been rolled into a later release of Java. For |
| example, BCP47 language tag support including Unicode locale extensions |
| is now in Java 7. However, the most current and complete version is always |
| found in ICU4J.</p> |
| </blockquote> |
| |
| <h3 class="doc"><a name="changes"></a>Changes In This Release</h3> |
| |
| <p>See the <a href="http://sites.google.com/site/icusite/download/50">ICU 50 download page</a> |
| about new features in this release. |
| The list of API changes since the previous ICU4J release is available |
| <a href="http://source.icu-project.org/repos/icu/icu4j/tags/release-50-1/APIChangeReport.html">here</a>.</p> |
| |
| <h4><code>Collator.ReorderCodes.DEFAULT</code> value</h4> |
| <p>We changed the numeric value of |
| <code>static final Collator.ReorderCodes.DEFAULT</code> from +1 to -1 |
| so that it does not collide with a valid UScript code (<code>UScript.INHERITED</code>), |
| and to make it match <code>UScript.INVALID_CODE</code> and C/C++ <code>UCOL_REORDER_CODE_DEFAULT</code>, |
| as had been intended. |
| Programs using <code>Collator.ReorderCodes.DEFAULT</code> must be recompiled.</p> |
| |
| <h4><code>class DictionaryBasedBreakIterator</code> has been removed.</h4> |
| |
| <p>The functionality of the <code>DictionaryBasedBreakIterator</code> |
| was moved into the base <code>RuleBasedBreakIterator</code>, and improved. |
| In particular, Java RBBI now handles multiple built-in dictionaries, |
| selecting them by character script, as in C++. |
| As a result, creating a BreakIterator for a particular language or dictionary is |
| unnecessary and obsolete.</p> |
| |
| <p>The dictionary data structure was changed, so ICU 50 would not be able to |
| handle an old <code>InputStream dictionaryStream</code>. |
| (If we wanted to formally keep a <code>class DictionaryBasedBreakIterator</code> |
| it would be an empty class, and its one public constructor would |
| throw an <code>UnsupportedOperationException</code>.)</p> |
| |
| <p>The DBBI class was not usable by itself: |
| A dictionary alone is not sufficient for dictionary-based breaking. |
| For each dictionary there must be specific code with the specific matching algorithm |
| (e.g., longest match vs. word-frequency-based word sequence probability) |
| and with a script-specific test for whether a dictionary word was found at a syllable boundary |
| (or whatever is the appropriate criterium).</p> |
| |
| <p>RBBI and its DBBI subclasses had an "intimate connection" and were not effectively separable.</p> |
| |
| <p>In C++, DBBI was already not public API and has been removed several years ago.</p> |
| |
| <p>If any users have subclasses of <code>class DictionaryBasedBreakIterator</code>, |
| they will need to be changed to subclass <code>RuleBasedBreakIterator</code> directly.</p> |
| |
| <h3 class="doc"><a name="license"></a>License Information</h3> |
| <p> |
| The ICU projects (ICU4C and ICU4J) use the X license. The X |
| license is <b>suitable for commercial use</b> and is a recommended free software license |
| that is compatible with the GNU GPL license. This became |
| effective with release 1.8.1 of ICU4C and release 1.3.1 of ICU4J in |
| mid-2001. All new ICU releases will adopt the X license; previous ICU |
| releases continue to utilize the IPL (IBM Public License). Users |
| of previous releases of ICU who want to adopt new ICU releases will |
| need to accept the terms and conditions of the X license. |
| </p> |
| <p> |
| The main effect of the change is to provide GPL compatibility. |
| The X license is listed as GPL compatible, see the GNU page at |
| <a href="http://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses"> |
| http://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses</a>. |
| This means that GPL projects can now use ICU code, it does <b>not</b> |
| mean that projects using ICU become subject to GPL. |
| </p> |
| <p> |
| The IBM version contains the essential text of the license, omitting the |
| X-specific trademarks and copyright notices. The full copy of <a |
| href="main/shared/licenses/license.html">ICU's license</a> is included in the download |
| package. |
| </p> |
| <h3 class="doc"><a name="PlatformDependencies"></a>Platform Dependencies</h3> |
| <p> |
| ICU4J 50 depends on J2SE 5.0 functionality. Therefore, ICU4J only runs on |
| JRE version 5.0 or later. |
| The table below shows the operating systems and JRE/VM versions currently |
| used by the ICU development team to test ICU4J. |
| </p> |
| <table border="1"> |
| <tr> |
| <th rowspan="2">Operating System</th> |
| <th colspan="2">JRE 7</th> |
| <th colspan="2">JRE 6</th> |
| <th colspan="2">JRE 5</th> |
| </tr> |
| <tr> |
| <th>32bit</th> |
| <th>64bit</th> |
| <th>32bit</th> |
| <th>64bit</th> |
| <th>32bit</th> |
| <th>64bit</th> |
| </tr> |
| <tr> |
| <th>AIX 6.1</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>AIX 7.1</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>HP-UX 11 (IA64)</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>Mac OS X 10.6</th> |
| <td align="center">-</td> |
| <td align="center">-</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center">-</td> |
| </tr> |
| <tr> |
| <th>Redhat Enterprise Linux 6 (x86)</th> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| </tr> |
| <tr> |
| <th>Redhat Enterprise Linux 6 (x86_64)</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>Solaris 10 (SPARC)</th> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>Solaris 11 (SPARC)</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| <tr> |
| <th>Windows XP</th> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| </tr> |
| <tr> |
| <th>Windows Vista</th> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| </tr> |
| <tr> |
| <th>Windows 7</th> |
| <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| </tr> |
| <tr> |
| <th>Windows 2008 Server</th> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| <td align="center">-</td> |
| <td align="center" bgcolor="#DDDDFF">Regularly tested</td> |
| </tr> |
| </table> |
| |
| <h3 class="doc"><a name="download"></a>How to Download ICU4J</h3> |
| <p>There are two ways to download the ICU4J releases. |
| </p> |
| <ul type="disc"> |
| <li><b>Official Release:</b><br> |
| If you want to use ICU4J (as opposed to developing it), your best bet |
| is to download an official, packaged version of the ICU4J library files. |
| These versions are tested more thoroughly than day-to-day development |
| builds, and they are packaged in jar files for convenient download. |
| These packaged files can be found at the |
| <a href="http://www.icu-project.org/download/">ICU Download page</a>. |
| </li></ul> |
| <ul type="disc"> |
| <li><b>Subversion Source Repository:</b><br> |
| If you are interested in developing features, patches, or bug fixes for |
| ICU4J, you should probably be working with the latest version of the |
| ICU4J source code. You will need to check the code out of our Subversion |
| repository to ensure that you have the most recent version of all of |
| the files. There are several ways to do this. Please follow the |
| directions that are contained on the <a |
| href="http://www.icu-project.org/repository/">Source |
| Repository page</a> for details. |
| </li> |
| </ul> |
| <p>For more details on how to download ICU4J directly from the web |
| site, please see the ICU download page at <a |
| href="http://www.icu-project.org/download/">http://www.icu-project.org/download/</a> |
| </p> |
| <h3 class="doc"><a name="WhatContain"></a>The Structure and Contents of |
| ICU4J</h3> |
| <p>Below, all directory pathes are relative to the directory where the |
| ICU4J source archive is extracted. |
| </p> |
| <p><b>Information and build files:</b></p> |
| <table border="1"> |
| <tr> |
| <th>Path</th> |
| <th>Description</th> |
| </tr> |
| <tr> |
| <td>readme.html</td> |
| <td>A description of ICU4J (International Components for Unicode for Java)</td> |
| </tr> |
| <tr> |
| <td>build.html</td> |
| <td>The main Ant build file for ICU4J. See <a href="#HowToInstallJavac">How to Install |
| and Build</a> for more information</td> |
| </tr> |
| <tr> |
| <td>main/shared/licenses/license.html</td> |
| <td>The X license, used by ICU4J</td> |
| </tr> |
| </table> |
| |
| <p><b>ICU4J runtime class files:</b></p> |
| <table border="1"> |
| <tr> |
| <th>Path</th> |
| <th>Sub-component Name</th> |
| <th>Build Dependencies</th> |
| <th>Public API Packages</th> |
| <th>Description</th> |
| </tr> |
| <tr> |
| <td>main/classes/charset</td> |
| <td>icu4j-charset</td> |
| <td>icu4j-core</td> |
| <td>com.ibm.icu.charset</td> |
| <td>Implementation of <code>java.nio.charset.spi.CharsetProvider</code>. |
| This sub-component is shipped as icu4j-charset.jar along with |
| ICU charset converter data files.</td> |
| </tr> |
| <tr> |
| <td>main/classes/collate</td> |
| <td>icu4j-collate</td> |
| <td>icu4j-core</td> |
| <td>com.ibm.icu.text<br> |
| com.ibm.icu.util</td> |
| <td>Collator APIs and implementation. Also includes some public API classes |
| that depend on Collator. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/core</td> |
| <td>icu4j-core</td> |
| <td>n/a</td> |
| <td>com.ibm.icu.lang<br> |
| com.ibm.icu.math<br> |
| com.ibm.icu.text<br> |
| com.ibm.icu.util</td> |
| <td>ICU core API classes and implementation. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/currdata</td> |
| <td>icu4j-currdata</td> |
| <td>icu4j-core</td> |
| <td>n/a</td> |
| <td>No public API classes. Provides access to currency display data. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/langdata</td> |
| <td>icu4j-langdata</td> |
| <td>icu4j-core</td> |
| <td>n/a</td> |
| <td>No public API classes. Provides access to language display data. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/localespi</td> |
| <td>icu4j-localespi</td> |
| <td>icu4j-core<br> |
| icu4j-collate<br> |
| </td> |
| <td>n/a</td> |
| <td>Implementation of various locale-sensitive service providers defined |
| in <code>java.text.spi</code> and <code>java.util.spi</code> in J2SE 6.0 |
| or later Java releases. |
| This sub-component is shipped as icu4j-localespi.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/regiondata</td> |
| <td>icu4j-regiondata</td> |
| <td>icu4j-core</td> |
| <td>n/a</td> |
| <td>No public API classes. Provides access to region display data. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| <tr> |
| <td>main/classes/translit</td> |
| <td>icu4j-translit</td> |
| <td>icu4j-core</td> |
| <td>com.ibm.icu.text</td> |
| <td>Transliterator APIs and implementation. |
| This sub-component is packaged as a part of icu4j.jar.</td> |
| </tr> |
| </table> |
| |
| <p><b>ICU4J unit test files:</b></p> |
| <table border="1"> |
| <tr> |
| <th>Path</th> |
| <th>Sub-component Name</th> |
| <th>Runtime Dependencies</th> |
| <th>Description</th> |
| </tr> |
| <tr> |
| <td>main/tests/charset</td> |
| <td>icu4j-charset-tests</td> |
| <td>icu4j-charset<br> |
| icu4j-core<br> |
| icu4j-test-framework</td> |
| <td>Test suite for charset sub-component.</td> |
| </tr> |
| <tr> |
| <td>main/tests/collate</td> |
| <td>icu4j-collate-tests</td> |
| <td>icu4j-collate<br> |
| icu4j-core<br> |
| icu4j-test-framework</td> |
| <td>Test suite for collate sub-component.</td> |
| </tr> |
| <tr> |
| <td>main/tests/core</td> |
| <td>icu4j-core-tests</td> |
| <td>icu4j-core<br> |
| icu4j-currdata<br> |
| icu4j-langdata<br> |
| icu4j-regiondata<br> |
| icu4j-test-framework</td> |
| <td>Test suite for core sub-component.</td> |
| </tr> |
| <tr> |
| <td>main/tests/framework</td> |
| <td>icu4j-test-framework</td> |
| <td>icu4j-core</td> |
| <td>Common ICU4J unit test framework and utilities.</td> |
| </tr> |
| <tr> |
| <td>main/tests/localespi</td> |
| <td>icu4j-localespi-tests</td> |
| <td>icu4j-core<br> |
| icu4j-collate<br> |
| icu4j-currdata<br> |
| icu4j-langdata<br> |
| icu4j-localespi<br> |
| icu4j-regiondata<br> |
| icu4j-test-framework</td> |
| <td>Test suite for localespi sub-component.</td> |
| </tr> |
| <tr> |
| <td>main/tests/packaging</td> |
| <td>icu4j-packaging-tests</td> |
| <td>icu4j-core<br> |
| icu4j-test-framework</td> |
| <td>Test suite for sub-component packaging.</td> |
| </tr> |
| <tr> |
| <td>main/tests/translit</td> |
| <td>icu4j-translit-tests</td> |
| <td>icu4j-core<br> |
| icu4j-translit |
| icu4j-test-framework</td> |
| <td>Test suite for translit sub-component.</td> |
| </tr> |
| </table> |
| |
| <p><b>Others:</b></p> |
| <table border="1"> |
| <tr> |
| <th>Path</th> |
| <th>Description</th> |
| </tr> |
| <tr> |
| <td>main/shared</td> |
| <td>Files shared by ICU4J sub-components under the <code>main</code> directory including: |
| <ul> |
| <li>ICU4J runtime data archive (icudata.jar).</li> |
| <li>ICU4J unit test data archive (testdata.jar).</li> |
| <li>Shared Ant build script and configuration files.</li> |
| <li>License files.</li> |
| </ul> |
| </td> |
| </tr> |
| <tr> |
| <td>demos</td> |
| <td>ICU4J demo programs.</td> |
| </tr> |
| <tr> |
| <td>perf-tests</td> |
| <td>ICU4J performance test files.</td> |
| </tr> |
| <tr> |
| <td>tools</td> |
| <td>ICU4J tools including: |
| <ul> |
| <li>Custom JavaDoc taglets used for generating ICU4J API references.</li> |
| <li>API report tool and data.</li> |
| <li>Other independent utilities used for ICU4J development.</li> |
| </ul> |
| </td> |
| </tr> |
| </table> |
| |
| <h3 class="doc"><a name="API"></a>Where to get Documentation</h3> |
| <p>The <a href="http://www.icu-project.org/userguide/">ICU user's |
| guide</a> contains lots of general information about ICU, in its C, |
| C++, and Java incarnations.</p> |
| <p>The complete API documentation for ICU4J (javadoc) is available on |
| the ICU4J web site, and can be built from the sources: |
| </p> |
| <ul> |
| <li><a href="http://www.icu-project.org/apiref/icu4j/">Index |
| to all ICU4J API</a></li> |
| <li><a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/CharsetDetector.html">Charset Detector</a> – Detection of charset from a byte stream</li> |
| <li>International Calendars – |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/BuddhistCalendar.html">Buddhist</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/ChineseCalendar.html">Chinese</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/CopticCalendar.html">Coptic</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/EthiopicCalendar.html">Ethiopic</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/GregorianCalendar.html">Gregorian</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/HebrewCalendar.html">Hebrew</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IndianCalendar.html">Indian</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IslamicCalendar.html">Islamic</a>, |
| <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/JapaneseCalendar.html">Japanese</a>.</li> |
| <li><a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Normalizer.html">Unicode |
| Normalization</a> – Canonical text representation for W3C.</li> |
| <li><a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/NumberFormat.html">Number |
| Format Enhancements</a> – Scientific Notation, Spelled out.</li> |
| <li><a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/BreakIterator.html">Enhanced |
| word-break detection</a> – Rule-based, supports Thai</li> |
| <li><a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Transliterator.html">Transliteration</a> |
| – A general framework for converting text from one format to another, |
| e.g. Cyrillic to Latin, or Hex to Unicode. </li> |
| <li>Unicode Text <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeCompressor.html">Compression</a> |
| & <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeDecompressor.html">Decompression</a> |
| – 2:1 compression on English Unicode text.</li> |
| <li>Collation - <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/RuleBasedCollator.html">Rule-based |
| sorting</a>, <a |
| href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/StringSearch.html">Efficient |
| multi-lingual searching</a> </li> |
| </ul> |
| <h3 class="doc"><a name="HowToInstallJavac"></a>How to Install and Build</h3> |
| <p> |
| To install ICU4J, simply place the prebuilt jar file <strong>icu4j.jar</strong> |
| on your Java CLASSPATH. If you need Charset API support please also place |
| <strong>icu4j-charset.jar</strong> on your class path along with <strong>icu4j.jar</strong>. |
| </p> |
| <p> |
| To build ICU4J, you will need J2SE SDK 5.0 or later (ICU4J locale SPI |
| provider sub-components require J2SE SDK 6.0 or later) and the Ant build system |
| version 1.7 or later. It's recommended to install both the J2SE SDK and Ant |
| somewhere <em>outside</em>the ICU4J directory. For example, on Linux you might install |
| these in <code>/usr/local</code>.</p> |
| <ul> |
| <li>Install J2SE SDK 7.</li> |
| <li>Install the <a href="http://ant.apache.org/"><strong>Ant</strong></a> |
| build system. Ant is a portable, Java-based build system similar to |
| make. ICU4J uses Ant because it introduces no other dependencies, it's |
| portable, and it's easier to manage than a collection of makefiles. We |
| currently build ICU4J using a single makefile on all platforms Ant. |
| The build system requires Ant 1.7 or later. |
| <p>Installing Ant is straightforward. Download it (see <a |
| href="http://ant.apache.org/bindownload.cgi">http://ant.apache.org/bindownload.cgi</a>), |
| extract it onto your system, set some environment variables, and add |
| its bin directory to your path. For example: </p> |
| <pre> |
| set JAVA_HOME=C:\jdk1.7.0 |
| set ANT_HOME=C:\ant |
| set PATH=%JAVA_HOME%\bin;%ANT_HOME%\bin;%PATH%</pre> |
| <p>See the current Ant documentation for details.</p> |
| </li> |
| </ul> |
| <p>Once the J2SE SDK and Ant are installed, building is just a matter of |
| typing <strong>ant</strong> in the ICU4J root directory. This causes the |
| Ant build system to perform the build target <strong>jar</strong> |
| as specified by the file <strong>build.xml</strong>, located in the ICU4J |
| root directory. You can give Ant options like -verbose, and you can specify |
| other targets. For example:</p> |
| <blockquote> |
| <pre>C:\icu4j>ant |
| Buildfile: C:\icu4j\build.xml |
| |
| info: |
| [echo] ----- Build Environment Information ------------------- |
| [echo] Java Home: C:\jdk1.7.0\jre |
| [echo] Java Version: 1.7.0 |
| [echo] Ant Home: C:\ant |
| [echo] Ant Version: Apache Ant(TM) version 1.8.4 compiled on May 22 2012 |
| [echo] OS: Windows 7 |
| [echo] OS Version: 6.1 |
| [echo] OS Arch: amd64 |
| [echo] Host: ICUDEV |
| [echo] ------------------------------------------------------- |
| |
| core: |
| |
| @compile: |
| [echo] --- java compiler arguments ------------------------ |
| [echo] source dir: C:\icu4j\main\classes\core/src |
| [echo] output dir: C:\icu4j\main\classes\core/out/bin |
| [echo] classpath: |
| [echo] source: 1.5 |
| [echo] target: 1.5 |
| [echo] debug: on |
| [echo] encoding: UTF-8 |
| [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options |
| [echo] ---------------------------------------------------- |
| [mkdir] Created dir: C:\icu4j\main\classes\core\out\bin |
| [javac] Compiling 346 source files to C:\icu4j\main\classes\core\out\bin |
| [javac] Note: Some input files use or override a deprecated API. |
| [javac] Note: Recompile with -Xlint:deprecation for details. |
| |
| compile: |
| |
| @copy: |
| [copy] Copying 23 files to C:\icu4j\main\classes\core\out\bin |
| |
| copy-data: |
| [unjar] Expanding: C:\icu4j\main\shared\data\icudata.jar into C:\icu4j\main\ |
| classes\core\out\bin |
| [unjar] Expanding: C:\icu4j\main\shared\data\icutzdata.jar into C:\icu4j\mai |
| n\classes\core\out\bin |
| |
| ... |
| ... |
| ... |
| |
| _build-localespi: |
| |
| @compile: |
| [echo] --- java compiler arguments ------------------------ |
| [echo] source dir: C:\icu4j\main\classes\localespi/src |
| [echo] output dir: C:\icu4j\main\classes\localespi/out/bin |
| [echo] classpath: C:\icu4j\main\classes\core\out\lib\icu4j-core.jar;C: |
| \icu4j\main\classes\collate\out\lib\icu4j-collate.jar |
| [echo] source: 1.6 |
| [echo] target: 1.6 |
| [echo] debug: on |
| [echo] encoding: UTF-8 |
| [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options |
| [echo] ---------------------------------------------------- |
| [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\bin |
| [javac] Compiling 22 source files to C:\icu4j\main\classes\localespi\out\bin |
| |
| |
| compile: |
| |
| @copy: |
| [copy] Copying 10 files to C:\icu4j\main\classes\localespi\out\bin |
| |
| copy: |
| |
| @jar: |
| [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\lib |
| [copy] Copying 1 file to C:\icu4j\main\classes\localespi\out |
| [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp |
| i.jar |
| |
| jar: |
| |
| @src-jar: |
| [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp |
| i-src.jar |
| |
| src-jar: |
| |
| build: |
| |
| jar: |
| [copy] Copying 1 file to C:\icu4j |
| [copy] Copying 1 file to C:\icu4j |
| |
| BUILD SUCCESSFUL |
| Total time: 1 minute 58 seconds</pre> |
| </blockquote> |
| <I>Note: The above output is an example. The numbers are likely to be different with the current version ICU4J.</I> |
| <p>The following are some targets that you can provide to <b>ant</b>. |
| For more targets run <code>ant -projecthelp</code> or see the build.xml file.</p> |
| <table border="1"> |
| <tr> |
| <th>jar (default)</th> |
| <td>Create ICU4J runtime library jar archives (<code>icu4j.jar</code>, |
| <code>icu4j-charset.jar</code> and <code>icu4j-localespi.jar</code>) |
| in the root ICU4J directory.</td> |
| </tr> |
| <tr> |
| <th>check</th> |
| <td>Build all ICU4J runtime library classes and corresponding unit test cases, |
| then run the tests.</td> |
| </tr> |
| <tr> |
| <th>clean</th> |
| <td>Remove all build output files.</td> |
| </tr> |
| <tr> |
| <th>main</th> |
| <td>Build all ICU4J runtime library sub-components (under the directory |
| <code>main/classes</code>).</td> |
| </tr> |
| <tr> |
| <th>tests</th> |
| <td>Build all ICU4J unit test sub-components (under the directory <code>main/tests</code>) |
| and their dependencies.</td> |
| </tr> |
| <tr> |
| <th>tools</th> |
| <td>Build the tools.</td> |
| </tr> |
| <tr> |
| <th>docs</th> |
| <td>Run javadoc over the ICU4J runtime library files, generating an HTML documentation |
| tree in the subdirectory <code>doc</code>.</td> |
| </tr> |
| <tr> |
| <th>jarDocs</th> |
| <td>Create ICU4J doc jar archive (<code>icu4jdocs.jar</code>) containing API reference |
| docs in the root ICU4J directory. </td> |
| </tr> |
| <tr> |
| <th>jarDemos</th> |
| <td>Create ICU4J demo jar archive (<code>icu4jdemos.jar</code>) in the root ICU4J |
| directory.</td> |
| </tr> |
| </table> |
| |
| <p>For more information, read the Ant documentation and the <strong>build.xml</strong> |
| file.</p> |
| <p><b>Note:</b> If you get an OutOfMemoryError when you are running <tt>"ant check"</tt>, |
| you can set the heap size of the jvm by setting the environment variable JVM_OPTIONS |
| to the appropriate java options.</p> |
| |
| <p><b>Eclipse users:</b> See the ICU4J site for information on<a |
| href="http://www.icu-project.org/docs/eclipse_howto/eclipse_howto.html"> |
| how to configure Eclipse</a> to build and develop ICU4J on Eclipse IDE.</p> |
| |
| <p><b>Note: </b>To install and configure ICU4J Locale Service Provider, please refer the user guide |
| page <a href="http://userguide.icu-project.org/icu4j-locale-service-provider">ICU4J Locale |
| Service Provider</a>.</p> |
| |
| <h3 class="doc"><a name="HowToModularize"></a>How to modularize ICU4J</h3> |
| <p>Some clients may not wish to ship all of ICU4J with their |
| application, since the application might only use a small part of ICU4J. |
| ICU4J release 2.6 and later provide build options to build individual |
| ICU4J 'modules' for a more compact distribution. For more details, please |
| refer to the section <em>Modularization of ICU4J</em> in the ICU user's |
| guide article <a href="http://userguide.icu-project.org/packaging-icu4j">Packaging ICU4J</a>. |
| |
| <h3 class="doc"><a name="tryingout"></a>Trying Out ICU4J</h3> |
| <p><strong>Note:</strong> the demos provided with ICU4J are for the |
| most part undocumented. This list can show you where to look, but |
| you'll have to experiment a bit. The demos are <strong>unsupported</strong> |
| and may change or disappear without notice.</p> |
| <p>The icu4j.jar file contains only the ICU4J runtime library classes, not the |
| demo classes, so unless you build ICU4J there is little to try out. |
| </p> |
| <h4>Charset</h4> |
| To try out the <strong>Charset</strong> package, build <strong>icu4j.jar</strong> and |
| <strong>icu4j-charset.jar</strong> using the 'jar' target. |
| You can use the charsets by placing these files on your classpath. |
| <blockquote><tt>java -cp $icu4j_root/icu4j.jar:$icu4j_root/icu4j-charset.jar <your program></tt></blockquote> |
| <h4>Other demos</h4> |
| <p>The other demo programs are <strong>not supported</strong> and |
| exist only to let you experiment with the ICU4J classes. First, build ICU4J using <tt>ant jarDemos</tt>. |
| Then launch the demos as below:</p> |
| <blockquote><tt>java -jar $icu4j_root/icu4jdemos.jar</tt></blockquote> |
| |
| <h3 class="doc"><a name="resources">ICU4J Resource Information</a></h3> |
| Starting with release 2.1, ICU4J includes its own |
| resource information |
| which is completely independent of the JRE resource information. (Note, |
| ICU4J 2.8 to 3.4, time zone information depends on the underlying JRE). |
| The ICU4J resource information is equivalent to the information in ICU4C and |
| many resources are, in fact, the same binary files that ICU4C uses. |
| <p> |
| By default the ICU4J distribution includes all of the standard resource |
| information. It is located under the directory com/ibm/icu/impl/data. |
| Depending on the service, the data is in different locations and in |
| different formats. <strong>Note:</strong> This will continue to change |
| from release to release, so clients should not depend on the exact |
| organization |
| of the data in ICU4J.</p> |
| <ul> |
| <li>The primary <b>locale data</b> is under the directory <tt>icudt50b</tt>, |
| as a set of <tt>".res"</tt> files whose names are the locale identifiers. |
| Locale naming is documented the <code>com.ibm.icu.util.ULocale</code> |
| class, and the use of these names in searching for resources is documented |
| in <code>com.ibm.icu.util.UResourceBundle</code>.</li> |
| |
| <li>The <b>collation data</b> is under the directory <tt>icudt50b/coll</tt>, |
| as a set of <tt>".res"</tt> files.</li> |
| |
| <li>The <b>currency display name data</b> is under the directory <tt>icudt50b/curr</tt>, |
| as a set of <tt>".res"</tt> files.</li> |
| |
| <li>The <b>language display name data</b> is under the directory <tt>icudt50b/lang</tt>, |
| as a set of <tt>".res"</tt> files.</li> |
| |
| <li>The <b>region display name data</b> is under the directory <tt>icudt50b/region</tt>, |
| as a set of <tt>".res"</tt> files.</li> |
| |
| <li>The <b>rule-based transliterator data</b> is under the directory |
| <tt>icudt50b/translit</tt>, as a set of <tt>".res"</tt> files.</li> |
| |
| <li>The <b>rule-based number format data</b> is under the directory |
| <tt>icudt50b/rbnf</tt>, as a set of <tt>".res"</tt> files. |
| |
| <li>The <b>break iterator data</b> is directly under the |
| directory <tt>icudt50b</tt>, as a set of <tt>".brk"</tt> files, named according to the |
| type of break and the locale where there are locale-specific versions.</li> |
| |
| <li>The <b>holiday data</b> is under the directory <tt>icudt50b</tt>, |
| as a set of <tt>".class"</tt> files, named <tt>"HolidayBundle_"</tt> |
| followed by the locale ID.</li> |
| |
| <li>The <b>character property data</b> and default <b>unicode collation algorithm |
| (UCA) data</b> is found under the directory <tt>icudt50b</tt>, as a set of |
| <tt>".icu"</tt> files. </li> |
| |
| <li>The <b>normalization data</b> is found under the directory <tt>icudt50b</tt>, |
| as a set of <tt>".nrm"</tt> files. </li> |
| |
| <li>The <b>character set converter data</b> is under the directory |
| <tt>icudt50b</tt>, as a set of <tt>".cnv"</tt> files. These files are |
| currently included only in icu-charset.jar.</li> |
| |
| <li>The <b>time zone rule data</b> is under the directory |
| <tt>icudt50b</tt>, as <tt>zoneinfo64.res</tt>.</li> |
| |
| <li>The <b>time zone display name data</b> is under the directory |
| <tt>icudt50b/zone</tt>, as a set of <tt>".res"</tt> files.</li> |
| </ul> |
| <p> |
| Some of the data files alias or otherwise reference data from other |
| data files. One reason for this is because some locale names have |
| changed. For example, <tt>he_IL</tt> used to be <tt>iw_IL</tt>. In |
| order to support both names but not duplicate the data, one of the |
| resource files refers to the other file's data. In other cases, a |
| file may alias a portion of another file's data in order to save |
| space. Currently ICU4J provides no tool for revealing these |
| dependencies.</p> |
| <blockquote><strong>Note:</strong> Java's <code>Locale</code> class |
| silently converts the language code <tt>"he"</tt> to <tt>"iw"</tt> |
| when you construct the Locale (for versions of Java through Java 5). Thus |
| Java cannot be used to locate resources that use the <tt>"he"</tt> |
| language code. ICU, on the other hand, does not perform this |
| conversion in ULocale, and instead uses aliasing in the locale data to |
| represent the same set of data under different locale |
| ids.</blockquote> |
| <p> |
| Resource files that use locale ids form a hierarchy, with up to four |
| levels: a root, language, region (country), and variant. Searches for |
| locale data attempt to match as far down the hierarchy as possible, |
| for example, <tt>"he_IL"</tt> will match <tt>he_IL</tt>, but |
| <tt>"he_US"</tt> will match <tt>he</tt> (since there is no <tt>US</tt> |
| variant for he, and <tt>"xx_YY</tt> will match root (the |
| default fallback locale) since there is no <tt>xx</tt> language code |
| in the locale hierarchy. Again, see |
| <code>java.util.ResourceBundle</code> for more information. |
| </p> |
| <p> |
| <strong>Currently ICU4J provides no tool for revealing these |
| dependencies</strong> between data files, so trimming the data |
| directly in the ICU4J project is a hit-or-miss affair. The key point |
| when you remove data is to make sure to remove all dependencies on |
| that data as well. For example, if you remove <tt>he.res</tt>, you |
| need to remove <tt>he_IL.res</tt>, since it is lower in the hierarchy, |
| and you must remove iw.res, since it references <tt>he.res</tt>, and |
| <tt>iw_IL.res</tt>, since it depends on it (and also references |
| <tt>he_IL.res</tt>). |
| </p> |
| <p> |
| Unfortunately, the jar tool in the JDK provides no way to remove items |
| from a jar file. Thus you have to extract the resources, remove the |
| ones you don't want, and then create a new jar file with the remining |
| resources. See the jar tool information for how to do this. Before |
| 'rejaring' the files, be sure to thoroughly test your application with |
| the remaining resources, making sure each required resource is |
| present. |
| </p> |
| <h4>Using additional resource files with ICU4J</h4> |
| <blockquote> |
| <table cellpadding="3" frame="border" rules="none" width="50%"> |
| <tbody> |
| <tr> |
| <td><b><font color="red" size="+1">Warning:</font> Resource |
| file formats can change across releases of ICU4J!</b></td> |
| </tr> |
| <tr> |
| <td>The format of ICU4J resources is not part of the API. |
| Clients who develop their own resources for use with ICU4J should be |
| prepared to |
| regenerate them when they move to new releases of ICU4J.</td> |
| </tr> |
| </tbody> |
| </table> |
| </blockquote> |
| <p> |
| We are still developing ICU4J's resource mechanism. Currently it |
| is not possible to mix icu's new binary <tt>.res</tt> |
| resources |
| with traditional java-style <tt>.class</tt> or <tt>.txt</tt> |
| resources. We might |
| allow for this in a future release, but since the resource data and |
| format is not formally |
| supported, you run the risk of incompatibilities with future releases |
| of ICU4J. |
| </p> |
| <p> |
| Resource data in ICU4J is checked in to the repository as a jar file |
| containing the resource binaries, <tt>$icu4j_root/main/shared/data/icudata.jar</tt>. |
| This means that inspecting the contents of these resources is difficult. |
| They currently are compiled from ICU4C <tt>.txt</tt> file data. You |
| can view the contents of the ICU4C text resource files to understand |
| the contents of the ICU4J resources. |
| </p> |
| <p> |
| The files in <tt>icudata.jar</tt> get extracted to <tt>com/ibm/icu/impl/data</tt> |
| in the build output directory by some build targets. |
| </p> |
| <h4><a name="resourcesICU4C">Building ICU4J Resources from ICU4C</a></h4> |
| ICU4J data is built by ICU4C tools. Please see "icu4j-readme.txt" in <I>$icu4c_root</I>/source/data for the procedures. |
| <h5> Generating Data from CLDR </h5> |
| <I> Note: This procedure assumes that all 3 sources are present</I> |
| <ol> |
| <li>Checkout or download CLDR version 'release-22-1-1'</li> |
| <li>Checkout ICU4C with tag 'release-50-1-1'</li> |
| <li>Checkout ICU4J with tag 'release-50-1-1'</li> |
| <li>cd to <I>$icu4c_root</I>/source/data directory</li> |
| <li>Follow the instructions in <I>$icu4c_root</I>/source/data/cldr-icu-readme.txt</li> |
| <li>Rebuild ICU4C with the newly generated data.</li> |
| <li>Run ICU4C tests to verify that the new data is good.</li> |
| <li>Build ICU4J data from ICU4C data by following the procedures in <I>$icu4c_root</I>/source/data/icu4j-readme.txt</li> |
| <li>cd to <I>$icu4j_root</I> dir</li> |
| |
| <li>Build and test icu4j</li> |
| </ol> |
| |
| <h3 class="doc"><a name="timezone"></a>About ICU4J Time Zone</h3> |
| <p>ICU4J 50.1.1 includes time zone data version 2012j, which is the latest one as of |
| the release date. However, time zone data is frequently updated in response |
| to changes made by local governments around the world. If you need to update |
| the time zone data, please refer the ICU user guide topic |
| <a href="http://userguide.icu-project.org/datetime/timezone#TOC-Updating-the-Time-Zone-Data">Updating the Time Zone Data</a>.</p> |
| <p>Starting with ICU4J 4.0, you can optionally configure ICU4J date and time |
| service classes to use underlying JDK TimeZone implementation (see the ICU4J API reference |
| <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/TimeZone.html">TimeZone</a> |
| for the details). When this configuration is enabled, ICU's own time zone data |
| won't be used and you have to get time zone data patches from the JRE vendor.</p> |
| |
| <h3 class="doc"><a name="WhereToFindMore"></a>Where to Find More |
| Information</h3> |
| <p><a href="http://www.icu-project.org/">http://www.icu-project.org/</a> |
| is the home page of International Components for Unicode development project</p> |
| <p><a href="http://www.ibm.com/software/globalization/icu/">http://www.ibm.com/software/globalization/icu/</a> |
| is a pointer to general information about the International Components for |
| Unicode hosted by IBM</p> |
| <p><a href="http://www.ibm.com/software/globalization/">http://www.ibm.com/software/globalization/</a> |
| is a pointer to |
| information on how to make applications global. </p> |
| <h3 class="doc"><a name="SubmittingComments"></a>Submitting Comments, |
| Requesting Features and |
| Reporting Bugs</h3> |
| <p>Your comments are important to making ICU4J successful. We are |
| committed to investigate any bug reports or suggestions, |
| and will use your feedback to help plan future releases.</p> |
| <p>To submit comments, request features and report bugs, |
| please see <a href="http://www.icu-project.org/bugs.html">ICU bug database |
| information</a> or contact us through the <a |
| href="http://www.icu-project.org/contacts.html">ICU Support |
| mailing list</a>. While we are not able to respond individually to each comment, we do |
| review all comments.</p> |
| <br> |
| <br> |
| <h2>Thank you for your interest in ICU4J!</h2> |
| <br> |
| <hr align="center" size="2" width="100%"> |
| <p><I><font size="-1">Copyright © 2002-2012 International Business |
| Machines Corporation and others. All Rights |
| Reserved.<br> |
| 4400 North First Street, San José, CA 95193, USA |
| </font></I></p> |
| </body> |
| </html> |
