1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 6 <meta http-equiv="Content-Style-Type" content="text/css2"> 7 <title>ReadMe for ICU4J</title> 8 <meta name="COPYRIGHT" content="Copyright 2000-2015, International Business Machines Corporation and others. All Rights Reserved."> 9 <style type="text/css"> 10 h3.doc { background: #CCCCFF } 11 h4.doc { text-decoration: underline } 12 </style> 13 </head> 14 <body style="background-color: rgb(255, 255, 255);" lang="EN-US" 15 link="#0000ff" vlink="#800080"> 16 <h1>International Components for Unicode for Java (ICU4J)</h1> 17 <h2>Read Me for ICU4J 56.1</h2> 18 (Last Update: 2015-October-06) 19 <hr size="2" width="100%"> 20 21 <p> 22 <b>Note:</b> This is major release of ICU4J. It contains bug fixes and adds implementations 23 of inherited API and introduces new API or functionality. --> 24 <!-- <b>Note:</b> This is a development release of ICU4J 56. 25 The contents of this document may not reflect the recent changes done 26 for ICU 56 development. This milestone is intended for those wishing 27 to get an early look at ICU4J 56 new features and API changes. It is not 28 recommended for production use. --> 29 <!-- <b>Note:</b> This is a release candidate of ICU4J 56. 30 The contents of this document may not reflect the recent changes done 31 for ICU 56 development. This release candidate is intended for those 32 wishing to verify ICU 56 integration before final release. It is not 33 recommended for production use. --> 34 <!-- <b>Note:</b> This is a development release of ICU4J 56. 35 The contents of this document may not reflect the recent changes done 36 for ICU 56 development. This milestone is intended for those 37 wishing to verify ICU 56 integration before final release. It is not 38 recommended for production use. --> 39 </p> 40 <p>For the most recent release, see the <a 41 href="http://www.icu-project.org/download/"> ICU4J 42 download site</a>. </p> 43 <h2 class="doc">Contents</h2> 44 <ul type="disc"> 45 <li><a href="#introduction">Introduction to ICU4J</a></li> 46 <li><a href="#changes">Changes In This Release</a></li> 47 <li><a href="#license">License Information</a></li> 48 <li><a href="#PlatformDependencies">Platform Dependencies</a></li> 49 <li><a href="#download">How to Download ICU4J</a></li> 50 <li><a href="#WhatContain">The Structure and Contents of ICU4J</a></li> 51 <li><a href="#API">Where to Get Documentation</a></li> 52 <li><a href="#HowToInstallJavac">How to Install and Build</a></li> 53 <li><a href="#HowToModularize">How to modularize ICU4J</a></li> 54 <li><a href="#tryingout">Trying Out ICU4J</a></li> 55 <li><a href="#resources">ICU4J Resource Information</a></li> 56 <li><a href="#timezone">About ICU4J Time Zone</a></li> 57 <li><a href="#WhereToFindMore">Where to Find More Information</a></li> 58 <li><a href="#SubmittingComments">Submitting Comments, Requesting 59 Features and Reporting Bugs</a></li> 60 </ul> 61 <h2 class="doc"><a name="introduction"></a>Introduction to ICU4J</h2> 62 <p>The International Components for Unicode (ICU) library provides 63 robust and 64 full-featured Unicode services on a wide variety of platforms. ICU 65 supports the 66 most current version of the Unicode standard, including support for 67 supplementary characters (needed for GB 18030 repertoire support).</p> 68 <p>Java provides a strong foundation for global programs, and IBM and 69 the 70 ICU team played a key role in providing globalization technology to 71 Java. But because of its long release schedule, Java cannot always keep 72 up with evolving standards. The ICU team continues to extend Java's 73 Unicode and internationalization support, focusing on improving 74 performance, 75 keeping current with the Unicode standard, and providing richer APIs, 76 while 77 remaining as compatible as possible with the original Java text and 78 internationalization API design.</p> 79 <p>ICU4J is an add-on to the regular JRE that provides: 80 </p> 81 <ul> 82 <li><a 83 href="http://www.icu-project.org/userguide/Collate_Intro.html"><b>Collation</b></a> 84 – rule-based, up-to-date Unicode Collation Algorithm (UCA) sorting order<br> 85 For fast multilingual string comparison; faster 86 and more complete than 87 the J2SE implementation</li> 88 <li><a href="http://www.icu-project.org/userguide/charsetDetection.html"><b>Charset 89 Detection</b></a> – Recognition of various single and multibyte charsets<br> 90 Useful for recognizing untagged text data</li> 91 <li><a 92 href="http://www.icu-project.org/userguide/unicodeSet.html"><b>UnicodeSet</b></a> 93 – standard set operations optimized for sets of Unicode characters<br> 94 UnicodeSets can be built from string patterns 95 using any Unicode properties.</li> 96 <li><a href="http://www.icu-project.org/userguide/Transform.html"><b>Transforms</b></a> 97 – a flexible mechanism for Unicode text conversions<br> 98 Including Full/Halfwidth conversions, 99 Normalization, Case conversions, Hex 100 conversions, and transliterations between scripts (50+ pairs)</li> 101 <li><a 102 href="http://www.icu-project.org/userguide/normalization.html"><b>Unicode 103 Normalization</b></a> – NFC, NFD, NFKD, NFKC<br> 104 For canonical text representations, needed for 105 XML and the net</li> 106 <li><a 107 href="http://www.icu-project.org/userguide/dateCalendar.html"><b>International 108 Calendars</b></a> – Arabic, Buddhist, Chinese, Hebrew, Japanese, Ethiopic, Islamic, Coptic and other calendars<br> 109 Required for correct presentation of dates in 110 certain countries</li> 111 <li><a 112 href="http://www.icu-project.org/userguide/formatNumbers.html"><b>Number 113 Format 114 Enhancements</b></a> – Scientific Notation, Spelled-out, etc.<br> 115 Enhancements to the normal Java number 116 formatting. The spell-out format is 117 used for checks and similar documents</li> 118 <li><a 119 href="http://www.icu-project.org/userguide/boundaryAnalysis.html"><b>Enhanced 120 Word-Break Detection</b></a> – Rule-based, supports Thai<br> 121 Required for correct support of Thai</li> 122 <li><a 123 href="http://www.icu-project.org/userguide/compression.html"><b>Unicode 124 Text 125 Compression</b></a> – Standard compression of Unicode text<br> 126 Suitable for large numbers of small fields, 127 where LZW and similar schemes 128 do not apply</li> 129 <li><a 130 href="http://www.icu-project.org/userguide/conversion.html"><b>Charset Conversion</b></a> – Conversion to and from different charsets.<br> 131 Plugs into Java CharsetProvider Service Provider Interface (SPI)</li> 132 133 </ul> 134 <blockquote> 135 <p><b>Note:</b> We continue to provide assistance to Java, and in some 136 cases, ICU4J support has been rolled into a later release of Java. For 137 example, BCP47 language tag support including Unicode locale extensions 138 is now in Java 7. However, the most current and complete version is always 139 found in ICU4J.</p> 140 </blockquote> 141 142 <h2 class="doc"><a name="changes"></a>Changes In This Release</h2> 143 144 <p>See the <a href="https://sites.google.com/site/icusite/download/56">ICU 56 download page</a> 145 about new features in this release. 146 The list of API changes since the previous ICU4J release is available 147 <a href="http://source.icu-project.org/repos/icu/icu4j/tags/release-56-1/APIChangeReport.html">here</a>.</p> 148 149 <!-- ICU 56 items --> 150 <!-- <h3>[Subject]</h3> --> 151 152 <!-- end ICU 56 items --> 153 154 <h2 class="doc"><a name="license"></a>License Information</h2> 155 <p> 156 The ICU projects (ICU4C and ICU4J) use the X license. The X 157 license is <b>suitable for commercial use</b> and is a recommended free software license 158 that is compatible with the GNU GPL license. This became 159 effective with release 1.8.1 of ICU4C and release 1.3.1 of ICU4J in 160 mid-2001. All new ICU releases will adopt the X license; previous ICU 161 releases continue to utilize the IPL (IBM Public License). Users 162 of previous releases of ICU who want to adopt new ICU releases will 163 need to accept the terms and conditions of the X license. 164 </p> 165 <p> 166 The main effect of the change is to provide GPL compatibility. 167 The X license is listed as GPL compatible, see the GNU page at 168 <a href="http://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses"> 169 http://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses</a>. 170 This means that GPL projects can now use ICU code, it does <b>not</b> 171 mean that projects using ICU become subject to GPL. 172 </p> 173 <p> 174 The IBM version contains the essential text of the license, omitting the 175 X-specific trademarks and copyright notices. The full copy of <a 176 href="http://source.icu-project.org/repos/icu/icu4j/tags/release-56-1/main/shared/licenses/license.html">ICU's license</a> is included in the download 177 package. 178 </p> 179 <h2 class="doc"><a name="PlatformDependencies"></a>Platform Dependencies</h2> 180 <p> 181 ICU4J 56 depends on J2SE 5.0 functionality. Therefore, ICU4J only runs on 182 JRE version 5.0 or later. 183 The table below shows the operating systems and JRE/VM versions currently 184 used by the ICU development team to test ICU4J. 185 </p> 186 <table border="1"> 187 <tr> 188 <th rowspan="2">Operating System</th> 189 <th colspan="2">JRE 8</th> 190 <th colspan="2">JRE 7</th> 191 <th colspan="2">JRE 6</th> 192 <th colspan="2">JRE 5</th> 193 </tr> 194 <tr> 195 <th>32bit</th> 196 <th>64bit</th> 197 <th>32bit</th> 198 <th>64bit</th> 199 <th>32bit</th> 200 <th>64bit</th> 201 <th>32bit</th> 202 <th>64bit</th> 203 </tr> 204 <tr> 205 <th>AIX 6.1</th> 206 <td align="center">-</td> 207 <td align="center">-</td> 208 <td align="center">-</td> 209 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 210 <td align="center">-</td> 211 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 212 <td align="center">-</td> 213 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 214 </tr> 215 <tr> 216 <th>AIX 7.1</th> 217 <td align="center">-</td> 218 <td align="center">-</td> 219 <td align="center">-</td> 220 <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> 221 <td align="center">-</td> 222 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 223 <td align="center">-</td> 224 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 225 </tr> 226 <tr> 227 <th>HP-UX 11 (IA64)</th> 228 <td align="center">-</td> 229 <td align="center">-</td> 230 <td align="center">-</td> 231 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 232 <td align="center">-</td> 233 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 234 <td align="center">-</td> 235 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 236 </tr> 237 <tr> 238 <th>Mac OS X 10.6</th> 239 <td align="center">-</td> 240 <td align="center">-</td> 241 <td align="center">-</td> 242 <td align="center">-</td> 243 <td align="center">-</td> 244 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 245 <td align="center">-</td> 246 <td align="center">-</td> 247 </tr> 248 <tr> 249 <th>Redhat Enterprise Linux 6 (x86)</th> 250 <td align="center">-</td> 251 <td align="center">-</td> 252 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 253 <td align="center">-</td> 254 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 255 <td align="center">-</td> 256 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 257 <td align="center">-</td> 258 </tr> 259 <tr> 260 <th>Redhat Enterprise Linux 6 (x86_64)</th> 261 <td align="center">-</td> 262 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 263 <td align="center">-</td> 264 <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> 265 <td align="center">-</td> 266 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 267 <td align="center">-</td> 268 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 269 </tr> 270 <tr> 271 <th>Solaris 10 (SPARC)</th> 272 <td align="center">-</td> 273 <td align="center">-</td> 274 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 275 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 276 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 277 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 278 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 279 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 280 </tr> 281 <tr> 282 <th>Solaris 11 (SPARC)</th> 283 <td align="center">-</td> 284 <td align="center">-</td> 285 <td align="center">-</td> 286 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 287 <td align="center">-</td> 288 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 289 <td align="center">-</td> 290 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 291 </tr> 292 <tr> 293 <th>Windows XP</th> 294 <td align="center">-</td> 295 <td align="center">-</td> 296 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 297 <td align="center">-</td> 298 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 299 <td align="center">-</td> 300 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 301 <td align="center">-</td> 302 </tr> 303 <tr> 304 <th>Windows Vista</th> 305 <td align="center">-</td> 306 <td align="center">-</td> 307 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 308 <td align="center">-</td> 309 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 310 <td align="center">-</td> 311 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 312 <td align="center">-</td> 313 </tr> 314 <tr> 315 <th>Windows 7</th> 316 <td align="center">-</td> 317 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 318 <td align="center" bgcolor="#CCCCFF"><em><b>Reference platform</b></em></td> 319 <td align="center">-</td> 320 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 321 <td align="center">-</td> 322 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 323 <td align="center">-</td> 324 </tr> 325 <tr> 326 <th>Windows 2008 Server</th> 327 <td align="center">-</td> 328 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 329 <td align="center">-</td> 330 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 331 <td align="center">-</td> 332 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 333 <td align="center">-</td> 334 <td align="center" bgcolor="#DDDDFF">Regularly tested</td> 335 </tr> 336 </table> 337 338 <h2 class="doc"><a name="download"></a>How to Download ICU4J</h2> 339 <p>There are two ways to download the ICU4J releases. 340 </p> 341 <ul type="disc"> 342 <li><b>Official Release:</b><br> 343 If you want to use ICU4J (as opposed to developing it), your best bet 344 is to download an official, packaged version of the ICU4J library files. 345 These versions are tested more thoroughly than day-to-day development 346 builds, and they are packaged in jar files for convenient download. 347 These packaged files can be found at the 348 <a href="http://www.icu-project.org/download/">ICU Download page</a>. 349 </li></ul> 350 <ul type="disc"> 351 <li><b>Subversion Source Repository:</b><br> 352 If you are interested in developing features, patches, or bug fixes for 353 ICU4J, you should probably be working with the latest version of the 354 ICU4J source code. You will need to check the code out of our Subversion 355 repository to ensure that you have the most recent version of all of 356 the files. There are several ways to do this. Please follow the 357 directions that are contained on the <a 358 href="http://www.icu-project.org/repository/">Source 359 Repository page</a> for details. 360 </li> 361 </ul> 362 <p>For more details on how to download ICU4J directly from the web 363 site, please see the ICU download page at <a 364 href="http://www.icu-project.org/download/">http://www.icu-project.org/download/</a> 365 </p> 366 <h2 class="doc"><a name="WhatContain"></a>The Structure and Contents of 367 ICU4J</h2> 368 <p>Below, all directory pathes are relative to the directory where the 369 ICU4J source archive is extracted. 370 </p> 371 <p><b>Information and build files:</b></p> 372 <table border="1"> 373 <tr> 374 <th>Path</th> 375 <th>Description</th> 376 </tr> 377 <tr> 378 <td>readme.html</td> 379 <td>A description of ICU4J (International Components for Unicode for Java)</td> 380 </tr> 381 <tr> 382 <td>build.html</td> 383 <td>The main Ant build file for ICU4J. See <a href="#HowToInstallJavac">How to Install 384 and Build</a> for more information</td> 385 </tr> 386 <tr> 387 <td>main/shared/licenses/license.html</td> 388 <td>The X license, used by ICU4J</td> 389 </tr> 390 </table> 391 392 <p><b>ICU4J runtime class files:</b></p> 393 <table border="1"> 394 <tr> 395 <th>Path</th> 396 <th>Sub-component Name</th> 397 <th>Build Dependencies</th> 398 <th>Public API Packages</th> 399 <th>Description</th> 400 </tr> 401 <tr> 402 <td>main/classes/charset</td> 403 <td>icu4j-charset</td> 404 <td>icu4j-core</td> 405 <td>com.ibm.icu.charset</td> 406 <td>Implementation of <code>java.nio.charset.spi.CharsetProvider</code>. 407 This sub-component is shipped as icu4j-charset.jar along with 408 ICU charset converter data files.</td> 409 </tr> 410 <tr> 411 <td>main/classes/collate</td> 412 <td>icu4j-collate</td> 413 <td>icu4j-core</td> 414 <td>com.ibm.icu.text<br> 415 com.ibm.icu.util</td> 416 <td>Collator APIs and implementation. Also includes some public API classes 417 that depend on Collator. 418 This sub-component is packaged as a part of icu4j.jar.</td> 419 </tr> 420 <tr> 421 <td>main/classes/core</td> 422 <td>icu4j-core</td> 423 <td>n/a</td> 424 <td>com.ibm.icu.lang<br> 425 com.ibm.icu.math<br> 426 com.ibm.icu.text<br> 427 com.ibm.icu.util</td> 428 <td>ICU core API classes and implementation. 429 This sub-component is packaged as a part of icu4j.jar.</td> 430 </tr> 431 <tr> 432 <td>main/classes/currdata</td> 433 <td>icu4j-currdata</td> 434 <td>icu4j-core</td> 435 <td>n/a</td> 436 <td>No public API classes. Provides access to currency display data. 437 This sub-component is packaged as a part of icu4j.jar.</td> 438 </tr> 439 <tr> 440 <td>main/classes/langdata</td> 441 <td>icu4j-langdata</td> 442 <td>icu4j-core</td> 443 <td>n/a</td> 444 <td>No public API classes. Provides access to language display data. 445 This sub-component is packaged as a part of icu4j.jar.</td> 446 </tr> 447 <tr> 448 <td>main/classes/localespi</td> 449 <td>icu4j-localespi</td> 450 <td>icu4j-core<br> 451 icu4j-collate<br> 452 </td> 453 <td>n/a</td> 454 <td>Implementation of various locale-sensitive service providers defined 455 in <code>java.text.spi</code> and <code>java.util.spi</code> in J2SE 6.0 456 or later Java releases. 457 This sub-component is shipped as icu4j-localespi.jar.</td> 458 </tr> 459 <tr> 460 <td>main/classes/regiondata</td> 461 <td>icu4j-regiondata</td> 462 <td>icu4j-core</td> 463 <td>n/a</td> 464 <td>No public API classes. Provides access to region display data. 465 This sub-component is packaged as a part of icu4j.jar.</td> 466 </tr> 467 <tr> 468 <td>main/classes/translit</td> 469 <td>icu4j-translit</td> 470 <td>icu4j-core</td> 471 <td>com.ibm.icu.text</td> 472 <td>Transliterator APIs and implementation. 473 This sub-component is packaged as a part of icu4j.jar.</td> 474 </tr> 475 </table> 476 477 <p><b>ICU4J unit test files:</b></p> 478 <table border="1"> 479 <tr> 480 <th>Path</th> 481 <th>Sub-component Name</th> 482 <th>Runtime Dependencies</th> 483 <th>Description</th> 484 </tr> 485 <tr> 486 <td>main/tests/charset</td> 487 <td>icu4j-charset-tests</td> 488 <td>icu4j-charset<br> 489 icu4j-core<br> 490 icu4j-test-framework</td> 491 <td>Test suite for charset sub-component.</td> 492 </tr> 493 <tr> 494 <td>main/tests/collate</td> 495 <td>icu4j-collate-tests</td> 496 <td>icu4j-collate<br> 497 icu4j-core<br> 498 icu4j-test-framework</td> 499 <td>Test suite for collate sub-component.</td> 500 </tr> 501 <tr> 502 <td>main/tests/core</td> 503 <td>icu4j-core-tests</td> 504 <td>icu4j-core<br> 505 icu4j-currdata<br> 506 icu4j-langdata<br> 507 icu4j-regiondata<br> 508 icu4j-test-framework</td> 509 <td>Test suite for core sub-component.</td> 510 </tr> 511 <tr> 512 <td>main/tests/framework</td> 513 <td>icu4j-test-framework</td> 514 <td>icu4j-core</td> 515 <td>Common ICU4J unit test framework and utilities.</td> 516 </tr> 517 <tr> 518 <td>main/tests/localespi</td> 519 <td>icu4j-localespi-tests</td> 520 <td>icu4j-core<br> 521 icu4j-collate<br> 522 icu4j-currdata<br> 523 icu4j-langdata<br> 524 icu4j-localespi<br> 525 icu4j-regiondata<br> 526 icu4j-test-framework</td> 527 <td>Test suite for localespi sub-component.</td> 528 </tr> 529 <tr> 530 <td>main/tests/packaging</td> 531 <td>icu4j-packaging-tests</td> 532 <td>icu4j-core<br> 533 icu4j-test-framework</td> 534 <td>Test suite for sub-component packaging.</td> 535 </tr> 536 <tr> 537 <td>main/tests/translit</td> 538 <td>icu4j-translit-tests</td> 539 <td>icu4j-core<br> 540 icu4j-translit 541 icu4j-test-framework</td> 542 <td>Test suite for translit sub-component.</td> 543 </tr> 544 </table> 545 546 <p><b>Others:</b></p> 547 <table border="1"> 548 <tr> 549 <th>Path</th> 550 <th>Description</th> 551 </tr> 552 <tr> 553 <td>main/shared</td> 554 <td>Files shared by ICU4J sub-components under the <code>main</code> directory including: 555 <ul> 556 <li>ICU4J runtime data archive (icudata.jar).</li> 557 <li>ICU4J unit test data archive (testdata.jar).</li> 558 <li>Shared Ant build script and configuration files.</li> 559 <li>License files.</li> 560 </ul> 561 </td> 562 </tr> 563 <tr> 564 <td>demos</td> 565 <td>ICU4J demo programs.</td> 566 </tr> 567 <tr> 568 <td>perf-tests</td> 569 <td>ICU4J performance test files.</td> 570 </tr> 571 <tr> 572 <td>tools</td> 573 <td>ICU4J tools including: 574 <ul> 575 <li>Custom JavaDoc taglets used for generating ICU4J API references.</li> 576 <li>API report tool and data.</li> 577 <li>Other independent utilities used for ICU4J development.</li> 578 </ul> 579 </td> 580 </tr> 581 </table> 582 583 <h2 class="doc"><a name="API"></a>Where to get Documentation</h2> 584 <p>The <a href="http://www.icu-project.org/userguide/">ICU user's 585 guide</a> contains lots of general information about ICU, in its C, 586 C++, and Java incarnations.</p> 587 <p>The complete API documentation for ICU4J (javadoc) is available on 588 the ICU4J web site, and can be built from the sources: 589 </p> 590 <ul> 591 <li><a href="http://www.icu-project.org/apiref/icu4j/">Index 592 to all ICU4J API</a></li> 593 <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> 594 <li>International Calendars – 595 <a 596 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/BuddhistCalendar.html">Buddhist</a>, 597 <a 598 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/ChineseCalendar.html">Chinese</a>, 599 <a 600 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/CopticCalendar.html">Coptic</a>, 601 <a 602 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/EthiopicCalendar.html">Ethiopic</a>, 603 <a 604 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/GregorianCalendar.html">Gregorian</a>, 605 <a 606 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/HebrewCalendar.html">Hebrew</a>, 607 <a 608 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IndianCalendar.html">Indian</a>, 609 <a 610 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/IslamicCalendar.html">Islamic</a>, 611 <a 612 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/JapaneseCalendar.html">Japanese</a>, 613 Persian, Dangi.</li> 614 <li>Time Zone Enhancements – 615 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/BasicTimeZone.html">Time zone transition and rule detection</a>, 616 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/VTimeZone.html">iCalendar VTIMEZONE formatting and parsing</a>, 617 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/RuleBasedTimeZone.html">Custom time zones constructed by user defined rules</a>. 618 <li>Date Format Enhancements – <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DateTimePatternGenerator.html">Date/Time Pattern Generator</a>, 619 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DateIntervalFormat.html">Date Interval Format</a>, 620 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/DurationFormat.html">Duration Format</a>. 621 <li><a 622 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Normalizer.html">Unicode 623 Normalization</a> – Canonical text representation for W3C.</li> 624 <li><a 625 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/NumberFormat.html">Number 626 Format Enhancements</a> – Scientific Notation, Spelled out.</li> 627 <li><a 628 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/BreakIterator.html">Enhanced 629 word-break detection</a> – Rule-based, supports Thai</li> 630 <li><a 631 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/Transliterator.html">Transliteration</a> 632 – A general framework for converting text from one format to another, 633 e.g. Cyrillic to Latin, or Hex to Unicode. </li> 634 <li>Unicode Text <a 635 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeCompressor.html">Compression</a> 636 & <a 637 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/UnicodeDecompressor.html">Decompression</a> 638 – 2:1 compression on English Unicode text.</li> 639 <li>Collation – <a 640 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/RuleBasedCollator.html">Rule-based 641 sorting</a>, <a 642 href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/StringSearch.html">Efficient 643 multi-lingual searching</a>, 644 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/text/AlphabeticIndex.html">Alphabetic indexing</a></li> 645 </ul> 646 <h2 class="doc"><a name="HowToInstallJavac"></a>How to Install and Build</h2> 647 <p> 648 To install ICU4J, simply place the prebuilt jar file <strong>icu4j.jar</strong> 649 on your Java CLASSPATH. If you need Charset API support please also place 650 <strong>icu4j-charset.jar</strong> on your class path along with <strong>icu4j.jar</strong>. 651 </p> 652 <p> 653 To build ICU4J, you will need J2SE SDK 5.0 or later (ICU4J locale SPI 654 provider sub-components require J2SE SDK 6.0 or later) and the Ant build system 655 version 1.7 or later. It's recommended to install both the J2SE SDK and Ant 656 somewhere <em>outside</em>the ICU4J directory. For example, on Linux you might install 657 these in <code>/usr/local</code>.</p> 658 <ul> 659 <li>Install J2SE SDK 7.</li> 660 <li>Install the <a href="http://ant.apache.org/"><strong>Ant</strong></a> 661 build system. Ant is a portable, Java-based build system similar to 662 make. ICU4J uses Ant because it introduces no other dependencies, it's 663 portable, and it's easier to manage than a collection of makefiles. We 664 currently build ICU4J using a single makefile on all platforms Ant. 665 The build system requires Ant 1.7 or later. 666 <p>Installing Ant is straightforward. Download it (see <a 667 href="http://ant.apache.org/bindownload.cgi">http://ant.apache.org/bindownload.cgi</a>), 668 extract it onto your system, set some environment variables, and add 669 its bin directory to your path. For example: </p> 670 <pre> 671 set JAVA_HOME=C:\jdk1.7.0 672 set ANT_HOME=C:\ant 673 set PATH=%JAVA_HOME%\bin;%ANT_HOME%\bin;%PATH%</pre> 674 <p>See the current Ant documentation for details.</p> 675 </li> 676 </ul> 677 <p>Once the J2SE SDK and Ant are installed, building is just a matter of 678 typing <strong>ant</strong> in the ICU4J root directory. This causes the 679 Ant build system to perform the build target <strong>jar</strong> 680 as specified by the file <strong>build.xml</strong>, located in the ICU4J 681 root directory. You can give Ant options like -verbose, and you can specify 682 other targets. For example:</p> 683 <blockquote> 684 <pre>C:\icu4j>ant 685 Buildfile: C:\icu4j\build.xml 686 687 info: 688 [echo] ----- Build Environment Information ------------------- 689 [echo] Java Home: C:\jdk1.7.0\jre 690 [echo] Java Version: 1.7.0 691 [echo] Ant Home: C:\ant 692 [echo] Ant Version: Apache Ant(TM) version 1.9.4 compiled on April 29 2014 693 [echo] OS: Windows 7 694 [echo] OS Version: 6.1 695 [echo] OS Arch: amd64 696 [echo] Host: ICUDEV 697 [echo] ------------------------------------------------------- 698 699 core: 700 701 @compile: 702 [echo] build-local: ../../shared/../../build-local.properties 703 [echo] ${java5.bootclasspath} 704 [echo] --- java compiler arguments ------------------------ 705 [echo] source dir: C:\icu4j\main\classes\core/src 706 [echo] output dir: C:\icu4j\main\classes\core/out/bin 707 [echo] bootclasspath: 708 [echo] classpath: 709 [echo] source: 1.5 710 [echo] target: 1.5 711 [echo] debug: on 712 [echo] encoding: UTF-8 713 [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options 714 [echo] ---------------------------------------------------- 715 [mkdir] Created dir: C:\icu4j\main\classes\core\out\bin 716 [javac] Compiling 365 source files to C:\icu4j\main\classes\core\out\bin 717 [javac] Note: Some input files use or override a deprecated API. 718 [javac] Note: Recompile with -Xlint:deprecation for details. 719 720 compile: 721 722 @copy: 723 [copy] Copying 23 files to C:\icu4j\main\classes\core\out\bin 724 725 set-icuconfig-datapath: 726 727 copy-data: 728 [unjar] Expanding: C:\icu4j\main\shared\data\icudata.jar into C:\icu4j\main\ 729 classes\core\out\bin 730 [unjar] Expanding: C:\icu4j\main\shared\data\icutzdata.jar into C:\icu4j\mai 731 n\classes\core\out\bin 732 733 ... 734 ... 735 ... 736 737 _build-localespi: 738 739 @compile: 740 [echo] build-local: ../../shared/../../build-local.properties 741 [echo] ${java5.bootclasspath} 742 [echo] --- java compiler arguments ------------------------ 743 [echo] source dir: C:\icu4j\main\classes\localespi/src 744 [echo] output dir: C:\icu4j\main\classes\localespi/out/bin 745 [echo] classpath: C:\icu4j\main\classes\core\out\lib\icu4j-core.jar;C: 746 \icu4j\main\classes\collate\out\lib\icu4j-collate.jar 747 [echo] source: 1.6 748 [echo] target: 1.6 749 [echo] debug: on 750 [echo] encoding: UTF-8 751 [echo] compiler arg: -Xlint:all,-deprecation,-dep-ann,-options 752 [echo] ---------------------------------------------------- 753 [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\bin 754 [javac] Compiling 22 source files to C:\icu4j\main\classes\localespi\out\bin 755 756 757 compile: 758 759 @copy: 760 [copy] Copying 10 files to C:\icu4j\main\classes\localespi\out\bin 761 762 copy: 763 764 @jar: 765 [mkdir] Created dir: C:\icu4j\main\classes\localespi\out\lib 766 [copy] Copying 1 file to C:\icu4j\main\classes\localespi\out 767 [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp 768 i.jar 769 770 jar: 771 772 @src-jar: 773 [jar] Building jar: C:\icu4j\main\classes\localespi\out\lib\icu4j-localesp 774 i-src.jar 775 776 src-jar: 777 778 build: 779 780 jar: 781 [copy] Copying 1 file to C:\icu4j 782 [copy] Copying 1 file to C:\icu4j 783 784 BUILD SUCCESSFUL 785 Total time: 50 seconds</pre> 786 </blockquote> 787 <I>Note: The above output is an example. The numbers are likely to be different with the current version ICU4J.</I> 788 <p>The following are some targets that you can provide to <b>ant</b>. 789 For more targets run <code>ant -projecthelp</code> or see the build.xml file.</p> 790 <table border="1"> 791 <tr> 792 <th>jar (default)</th> 793 <td>Create ICU4J runtime library jar archives (<code>icu4j.jar</code>, 794 <code>icu4j-charset.jar</code> and <code>icu4j-localespi.jar</code>) 795 in the root ICU4J directory.</td> 796 </tr> 797 <tr> 798 <th>check</th> 799 <td>Build all ICU4J runtime library classes and corresponding unit test cases, 800 then run the tests.</td> 801 </tr> 802 <tr> 803 <th>clean</th> 804 <td>Remove all build output files.</td> 805 </tr> 806 <tr> 807 <th>main</th> 808 <td>Build all ICU4J runtime library sub-components (under the directory 809 <code>main/classes</code>).</td> 810 </tr> 811 <tr> 812 <th>tests</th> 813 <td>Build all ICU4J unit test sub-components (under the directory <code>main/tests</code>) 814 and their dependencies.</td> 815 </tr> 816 <tr> 817 <th>tools</th> 818 <td>Build the tools.</td> 819 </tr> 820 <tr> 821 <th>docs</th> 822 <td>Run javadoc over the ICU4J runtime library files, generating an HTML documentation 823 tree in the subdirectory <code>doc</code>.</td> 824 </tr> 825 <tr> 826 <th>jarDocs</th> 827 <td>Create ICU4J doc jar archive (<code>icu4jdocs.jar</code>) containing API reference 828 docs in the root ICU4J directory. </td> 829 </tr> 830 <tr> 831 <th>jarDemos</th> 832 <td>Create ICU4J demo jar archive (<code>icu4jdemos.jar</code>) in the root ICU4J 833 directory.</td> 834 </tr> 835 </table> 836 837 <p>For more information, read the Ant documentation and the <strong>build.xml</strong> 838 file.</p> 839 <p><b>Note:</b> If you get an OutOfMemoryError when you are running <tt>"ant check"</tt>, 840 you can set the heap size of the jvm by setting the environment variable JVM_OPTIONS 841 to the appropriate java options.</p> 842 843 <p><b>Eclipse users:</b> See the ICU4J site for information on<a 844 href="http://www.icu-project.org/docs/eclipse_howto/eclipse_howto.html"> 845 how to configure Eclipse</a> to build and develop ICU4J on Eclipse IDE.</p> 846 847 <p><b>Note:</b> To install and configure ICU4J Locale Service Provider, please refer the user guide 848 page <a href="http://userguide.icu-project.org/icu4j-locale-service-provider">ICU4J Locale 849 Service Provider</a>.</p> 850 851 <!-- <p><b>Note:</b> ICU4J 56 does not support JDK 8 javadoc tool yet. The build targets "doc" and 852 "docs" will fail when JDK 8 javadoc tool is used.</p> --> 853 854 <h2 class="doc"><a name="HowToModularize"></a>How to modularize ICU4J</h2> 855 <p>Some clients may not wish to ship all of ICU4J with their 856 application, since the application might only use a small part of ICU4J. 857 ICU4J release 2.6 and later provide build options to build individual 858 ICU4J 'modules' for a more compact distribution. For more details, please 859 refer to the section <em>Modularization of ICU4J</em> in the ICU user's 860 guide article <a href="http://userguide.icu-project.org/packaging-icu4j">Packaging ICU4J</a>. 861 862 <h2 class="doc"><a name="tryingout"></a>Trying Out ICU4J</h2> 863 <p><strong>Note:</strong> the demos provided with ICU4J are for the 864 most part undocumented. This list can show you where to look, but 865 you'll have to experiment a bit. The demos are <strong>unsupported</strong> 866 and may change or disappear without notice.</p> 867 <p>The icu4j.jar file contains only the ICU4J runtime library classes, not the 868 demo classes, so unless you build ICU4J there is little to try out. 869 </p> 870 <h3>Charset</h3> 871 To try out the <strong>Charset</strong> package, build <strong>icu4j.jar</strong> and 872 <strong>icu4j-charset.jar</strong> using the 'jar' target. 873 You can use the charsets by placing these files on your classpath. 874 <blockquote><tt>java -cp $icu4j_root/icu4j.jar:$icu4j_root/icu4j-charset.jar <your program></tt></blockquote> 875 <h3>Other demos</h3> 876 <p>The other demo programs are <strong>not supported</strong> and 877 exist only to let you experiment with the ICU4J classes. First, build ICU4J using <tt>ant jarDemos</tt>. 878 Then launch the demos as below:</p> 879 <blockquote><tt>java -jar $icu4j_root/icu4jdemos.jar</tt></blockquote> 880 881 <h2 class="doc"><a name="resources">ICU4J Resource Information</a></h2> 882 Starting with release 2.1, ICU4J includes its own 883 resource information 884 which is completely independent of the JRE resource information. (Note, 885 ICU4J 2.8 to 3.4, time zone information depends on the underlying JRE). 886 The ICU4J resource information is equivalent to the information in ICU4C and 887 many resources are, in fact, the same binary files that ICU4C uses. 888 <p> 889 By default the ICU4J distribution includes all of the standard resource 890 information. It is located under the directory com/ibm/icu/impl/data. 891 Depending on the service, the data is in different locations and in 892 different formats. <strong>Note:</strong> This will continue to change 893 from release to release, so clients should not depend on the exact 894 organization 895 of the data in ICU4J.</p> 896 <ul> 897 <li>The primary <b>locale data</b> is under the directory <tt>icudt56b</tt>, 898 as a set of <tt>".res"</tt> files whose names are the locale identifiers. 899 Locale naming is documented the <code>com.ibm.icu.util.ULocale</code> 900 class, and the use of these names in searching for resources is documented 901 in <code>com.ibm.icu.util.UResourceBundle</code>.</li> 902 903 <li>The <b>break iterator data</b> is under the directory <tt>icudt56b/brkitr</tt>, 904 as a set of <tt>".res"</tt>, <tt>".brk"</tt> and <tt>".dict"</tt> files.</li> 905 906 <li>The <b>collation data</b> is under the directory <tt>icudt56b/coll</tt>, 907 as a set of <tt>".res"</tt> files.</li> 908 909 <li>The <b>currency display name data</b> is under the directory <tt>icudt56b/curr</tt>, 910 as a set of <tt>".res"</tt> files.</li> 911 912 <li>The <b>language display name data</b> is under the directory <tt>icudt56b/lang</tt>, 913 as a set of <tt>".res"</tt> files.</li> 914 915 <li>The <b>rule-based number format data</b> is under the directory 916 <tt>icudt56b/rbnf</tt>, as a set of <tt>".res"</tt> files. 917 918 <li>The <b>region display name data</b> is under the directory <tt>icudt56b/region</tt>, 919 as a set of <tt>".res"</tt> files.</li> 920 921 <li>The <b>rule-based transliterator data</b> is under the directory 922 <tt>icudt56b/translit</tt>, as a set of <tt>".res"</tt> files.</li> 923 924 <li>The <b>measurement unit data</b> is under the directory <tt>icudt56b/unit</tt>, 925 as a set of <tt>".res"</tt> files.</li> 926 927 <li>The <b>time zone display name data</b> is under the directory 928 <tt>icudt56b/zone</tt>, as a set of <tt>".res"</tt> files.</li> 929 930 <li>The <b>character property data</b> and default <b>unicode collation algorithm 931 (UCA) data</b> is found under the directory <tt>icudt56b</tt>, as a set of 932 <tt>".icu"</tt> files. </li> 933 934 <li>The <b>normalization data</b> is found under the directory <tt>icudt56b</tt>, 935 as a set of <tt>".nrm"</tt> files. </li> 936 937 <li>The <b>character set converter data</b> is under the directory 938 <tt>icudt56b</tt>, as a set of <tt>".cnv"</tt> files. These files are 939 currently included only in icu-charset.jar.</li> 940 941 <li>The <b>time zone rule data</b> is under the directory 942 <tt>icudt56b</tt>, as <tt>zoneinfo64.res</tt>.</li> 943 944 <li>The <b>holiday data</b> is under the directory <tt>icudt56b</tt>, 945 as a set of <tt>".class"</tt> files, named <tt>"HolidayBundle_"</tt> 946 followed by the locale ID.</li> 947 948 </ul> 949 <p> 950 Some of the data files alias or otherwise reference data from other 951 data files. One reason for this is because some locale names have 952 changed. For example, <tt>he_IL</tt> used to be <tt>iw_IL</tt>. In 953 order to support both names but not duplicate the data, one of the 954 resource files refers to the other file's data. In other cases, a 955 file may alias a portion of another file's data in order to save 956 space. Currently ICU4J provides no tool for revealing these 957 dependencies.</p> 958 <blockquote><strong>Note:</strong> Java's <code>Locale</code> class 959 silently converts the language code <tt>"he"</tt> to <tt>"iw"</tt> 960 when you construct the Locale (for versions of Java through Java 5). Thus 961 Java cannot be used to locate resources that use the <tt>"he"</tt> 962 language code. ICU, on the other hand, does not perform this 963 conversion in ULocale, and instead uses aliasing in the locale data to 964 represent the same set of data under different locale 965 ids.</blockquote> 966 <p> 967 Resource files that use locale ids form a hierarchy, with up to four 968 levels: a root, language, region (country), and variant. Searches for 969 locale data attempt to match as far down the hierarchy as possible, 970 for example, <tt>"he_IL"</tt> will match <tt>he_IL</tt>, but 971 <tt>"he_US"</tt> will match <tt>he</tt> (since there is no <tt>US</tt> 972 variant for he, and <tt>"xx_YY</tt> will match root (the 973 default fallback locale) since there is no <tt>xx</tt> language code 974 in the locale hierarchy. Again, see 975 <code>java.util.ResourceBundle</code> for more information. 976 </p> 977 <p> 978 <strong>Currently ICU4J provides no tool for revealing these 979 dependencies</strong> between data files, so trimming the data 980 directly in the ICU4J project is a hit-or-miss affair. The key point 981 when you remove data is to make sure to remove all dependencies on 982 that data as well. For example, if you remove <tt>he.res</tt>, you 983 need to remove <tt>he_IL.res</tt>, since it is lower in the hierarchy, 984 and you must remove iw.res, since it references <tt>he.res</tt>, and 985 <tt>iw_IL.res</tt>, since it depends on it (and also references 986 <tt>he_IL.res</tt>). 987 </p> 988 <p> 989 Unfortunately, the jar tool in the JDK provides no way to remove items 990 from a jar file. Thus you have to extract the resources, remove the 991 ones you don't want, and then create a new jar file with the remining 992 resources. See the jar tool information for how to do this. Before 993 'rejaring' the files, be sure to thoroughly test your application with 994 the remaining resources, making sure each required resource is 995 present. 996 </p> 997 <h3>Using additional resource files with ICU4J</h3> 998 <blockquote> 999 <table cellpadding="3" frame="border" rules="none" width="50%"> 1000 <tbody> 1001 <tr> 1002 <td><b><font color="red" size="+1">Warning:</font> Resource 1003 file formats can change across releases of ICU4J!</b></td> 1004 </tr> 1005 <tr> 1006 <td>The format of ICU4J resources is not part of the API. 1007 Clients who develop their own resources for use with ICU4J should be 1008 prepared to 1009 regenerate them when they move to new releases of ICU4J.</td> 1010 </tr> 1011 </tbody> 1012 </table> 1013 </blockquote> 1014 <p> 1015 We are still developing ICU4J's resource mechanism. Currently it 1016 is not possible to mix icu's new binary <tt>.res</tt> 1017 resources 1018 with traditional java-style <tt>.class</tt> or <tt>.txt</tt> 1019 resources. We might 1020 allow for this in a future release, but since the resource data and 1021 format is not formally 1022 supported, you run the risk of incompatibilities with future releases 1023 of ICU4J. 1024 </p> 1025 <p> 1026 Resource data in ICU4J is checked in to the repository as a jar file 1027 containing the resource binaries, <tt>$icu4j_root/main/shared/data/icudata.jar</tt>. 1028 This means that inspecting the contents of these resources is difficult. 1029 They currently are compiled from ICU4C <tt>.txt</tt> file data. You 1030 can view the contents of the ICU4C text resource files to understand 1031 the contents of the ICU4J resources. 1032 </p> 1033 <p> 1034 The files in <tt>icudata.jar</tt> get extracted to <tt>com/ibm/icu/impl/data</tt> 1035 in the build output directory by some build targets. 1036 </p> 1037 <h3><a name="resourcesICU4C">Building ICU4J Resources from ICU4C</a></h3> 1038 ICU4J data is built by ICU4C tools. Please see "icu4j-readme.txt" in <I>$icu4c_root</I>/source/data for the procedures. 1039 <h5> Generating Data from CLDR </h5> 1040 <I> Note: This procedure assumes that all 3 sources are present</I> 1041 <ol> 1042 <li>Checkout or download CLDR version 'release-28'</li> 1043 <li>Checkout ICU4C with tag 'release-56-1'</li> 1044 <li>Checkout ICU4J with tag 'release-56-1'</li> 1045 <li>cd to <I>$icu4c_root</I>/source/data directory</li> 1046 <li>Follow the instructions in <I>$icu4c_root</I>/source/data/cldr-icu-readme.txt</li> 1047 <li>Rebuild ICU4C with the newly generated data.</li> 1048 <li>Run ICU4C tests to verify that the new data is good.</li> 1049 <li>Build ICU4J data from ICU4C data by following the procedures in <I>$icu4c_root</I>/source/data/icu4j-readme.txt</li> 1050 <li>cd to <I>$icu4j_root</I> dir</li> 1051 1052 <li>Build and test icu4j</li> 1053 </ol> 1054 1055 <h2 class="doc"><a name="timezone"></a>About ICU4J Time Zone</h2> 1056 <p>ICU4J 56 Release Candidate includes time zone data version 2015f, which is the latest one as of 1057 the release date. However, time zone data is frequently updated in response 1058 to changes made by local governments around the world. If you need to update 1059 the time zone data, please refer the ICU user guide topic 1060 <a href="http://userguide.icu-project.org/datetime/timezone#TOC-Updating-the-Time-Zone-Data">Updating the Time Zone Data</a>.</p> 1061 <p>Starting with ICU4J 4.0, you can optionally configure ICU4J date and time 1062 service classes to use underlying JDK TimeZone implementation (see the ICU4J API reference 1063 <a href="http://www.icu-project.org/apiref/icu4j/com/ibm/icu/util/TimeZone.html">TimeZone</a> 1064 for the details). When this configuration is enabled, ICU's own time zone data 1065 won't be used and you have to get time zone data patches from the JRE vendor.</p> 1066 1067 <h2 class="doc"><a name="WhereToFindMore"></a>Where to Find More 1068 Information</h2> 1069 <p><a href="http://www.icu-project.org/">http://www.icu-project.org/</a> 1070 is the home page of International Components for Unicode development project</p> 1071 <p><a href="http://www.ibm.com/software/globalization/icu/">http://www.ibm.com/software/globalization/icu/</a> 1072 is a pointer to general information about the International Components for 1073 Unicode hosted by IBM</p> 1074 <p><a href="http://www.ibm.com/software/globalization/">http://www.ibm.com/software/globalization/</a> 1075 is a pointer to 1076 information on how to make applications global. </p> 1077 <h2 class="doc"><a name="SubmittingComments"></a>Submitting Comments, 1078 Requesting Features and 1079 Reporting Bugs</h2> 1080 <p>Your comments are important to making ICU4J successful. We are 1081 committed to investigate any bug reports or suggestions, 1082 and will use your feedback to help plan future releases.</p> 1083 <p>To submit comments, request features and report bugs, 1084 please see <a href="http://www.icu-project.org/bugs.html">ICU bug database 1085 information</a> or contact us through the <a 1086 href="http://www.icu-project.org/contacts.html">ICU Support 1087 mailing list</a>. While we are not able to respond individually to each comment, we do 1088 review all comments.</p> 1089 <br> 1090 <br> 1091 <h2>Thank you for your interest in ICU4J!</h2> 1092 <br> 1093 <hr align="center" size="2" width="100%"> 1094 <p><I><font size="-1">Copyright © 2000-2015 International Business 1095 Machines Corporation and others. All Rights 1096 Reserved.<br> 1097 4400 North First Street, San José, CA 95193, USA 1098 </font></I></p> 1099 </body> 1100 </html> 1101
