source: general/prog/openjdk.xml@ 32e3833

12.1 ken/TL2024 ken/tuningfonts lazarus plabs/newcss python3.11 rahul/power-profiles-daemon renodr/vulkan-addition trunk xry111/llvm18
Last change on this file since 32e3833 was 32e3833, checked in by Pierre Labastie <pierre.labastie@…>, 8 months ago

Update to OpenJDK-21

  • Property mode set to 100644
File size: 31.4 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY ojdk-tarball "jdk-&openjdk-version;-ga.tar.gz">
8 <!ENTITY ojdk-repo "https://github.com/openjdk/jdk21u">
9 <!ENTITY ojdk-download "&ojdk-repo;/archive/&ojdk-tarball;">
10
11 <!ENTITY anduin-download "&sources-anduin-http;/OpenJDK/OpenJDK-&openjdk-version;">
12
13 <!ENTITY ojdk-md5sum "064572e41dd0a0d2279ad94c3139a684">
14 <!ENTITY ojdk-size "107 MB">
15
16 <!ENTITY jtreg-version "7.2+1">
17 <!ENTITY jtreg-download "&anduin-download;/jtreg-&jtreg-version;.tar.gz">
18 <!ENTITY jtreg-md5sum "530eb67155e0a399d1a68b2f8584613a">
19 <!ENTITY jtreg-size "8.9 MB">
20
21 <!ENTITY ojdk-bdsize "6.1 GB (add 561 MB for tests)">
22 <!ENTITY ojdk-time "4.2 SBU with 4 jobs (add 45 SBU for tests with 4 jobs)">
23]>
24
25<sect1 id="openjdk" xreflabel="OpenJDK-&openjdk-version;">
26 <?dbhtml filename="openjdk.html" ?>
27
28
29 <title>OpenJDK-&openjdk-version;</title>
30
31 <indexterm zone="openjdk">
32 <primary sortas="a-OpenJDK">OpenJDK</primary>
33 </indexterm>
34
35 <sect2 role="package">
36 <title>Introduction to OpenJDK</title>
37
38 <para>
39 <application>OpenJDK</application> is an open-source implementation
40 of Oracle's Java Standard Edition platform.
41 <application>OpenJDK</application> is useful for developing
42 <application>Java</application> programs, and provides a complete
43 runtime environment to run <application>Java</application> programs.
44 </para>
45
46 &lfs120_checked;
47
48 <para>
49 OpenJDK is GPL'd code, with a special exception made for non-free
50 projects to use these classes in their proprietary products.
51 In similar fashion to the LGPL, which allows non-free programs to link
52 to libraries provided by free software, the
53 <ulink url="https://openjdk.org/legal/gplv2+ce.html">GNU
54 General Public License, version 2, with the Classpath Exception</ulink>
55 allows third party programs to use classes provided by free software
56 without the requirement that the third party software also be free. As
57 with the LGPL, any modifications made to the free software portions of a
58 third party application, must also be made freely available.
59 </para>
60
61 <note>
62 <para>
63 The <application>OpenJDK</application> source includes a very
64 thorough, open source test suite using the
65 <application>JTreg</application> test harness. The testing instructions
66 below allow testing the just built JDK for reasonable compatibility
67 with the proprietary Oracle JDK. However, in order for an independent
68 implementation to claim compatibility, it must pass a proprietary
69 <application>JCK/TCK</application> test suite. No claims of
70 compatibility, or even partial compatibility, may be made without passing
71 an approved test suite.
72 </para>
73
74 <para>
75 Oracle does provide free community access, on a case by case basis, to
76 a closed toolkit to ensure 100% compatibility with its proprietary JDK.
77 Neither the binary version provided on the <xref linkend="java"/> page
78 nor the JVM built with the instructions below have been tested against
79 the <ulink
80 url="https://openjdk.java.net/groups/conformance/JckAccess/jck-access.html">
81 TCK</ulink>. Any version that is built using the instructions given,
82 cannot claim to be compatible with the proprietary JDK, without the
83 user applying for, and completing the compatibility tests themselves.
84 </para>
85
86 <para>
87 With that in mind, the binaries produced using this build method are
88 regularly tested against the TCK by the members listed on the site
89 above. In addition to the community license above, an educational,
90 non-commercial license for the TCK can be obtained <ulink
91 url="https://www.oracle.com/technetwork/java/index-137188.html">
92 here</ulink>.
93 </para>
94 </note>
95
96 <bridgehead renderas="sect3">Package Information</bridgehead>
97 <itemizedlist spacing="compact">
98 <listitem>
99 <para>
100 Download (HTTP): <ulink url="&ojdk-download;"/>
101 </para>
102 </listitem>
103 <listitem>
104 <para>
105 Download (FTP): <ulink url=" "/>
106 </para>
107 </listitem>
108 <listitem>
109 <para>
110 Download MD5 sum: &ojdk-md5sum;
111 </para>
112 </listitem>
113 <listitem>
114 <para>
115 Download Size: &ojdk-size;
116 </para>
117 </listitem>
118 <listitem>
119 <para>
120 Estimated disk space required: &ojdk-bdsize;
121 </para>
122 </listitem>
123 <listitem>
124 <para>
125 Estimated build time: &ojdk-time;
126 </para>
127 </listitem>
128 </itemizedlist>
129
130 <bridgehead renderas="sect3">Additional Downloads</bridgehead>
131
132 <para>
133 <emphasis role="strong">Optional test harness</emphasis>
134 </para>
135
136 <itemizedlist spacing='compact'>
137 <listitem>
138 <para>
139 <ulink url="&jtreg-download;"/>
140 </para>
141 </listitem>
142 <listitem>
143 <para>
144 Download MD5 sum: &jtreg-md5sum;
145 </para>
146 </listitem>
147 <listitem>
148 <para>
149 Download Size: &jtreg-size;
150 </para>
151 </listitem>
152 </itemizedlist>
153<!--
154 <bridgehead renderas="sect4">Required patch</bridgehead>
155
156 <itemizedlist spacing='compact'>
157 <listitem>
158 <para>
159 <ulink url="&patch-root;/openjdk-&openjdk-version;-make_4.3_fix-1.patch"/>
160 </para>
161 </listitem>
162 </itemizedlist>
163-->
164 <bridgehead renderas="sect3">OpenJDK Dependencies</bridgehead>
165
166 <bridgehead renderas="sect4">Required Dependencies</bridgehead>
167 <para role="required">
168 An existing binary (<xref linkend="java"/> or an earlier built
169 version of this package. The instructions below assume that
170 you are using <xref linkend="ojdk-conf"/>),
171 <xref linkend="alsa-lib"/>,
172 <xref linkend="cpio"/>,
173 <xref linkend="cups"/>,
174 <xref linkend="unzip"/>,
175 <xref linkend="which"/>,
176 <xref linkend="xorg7-lib"/>, and
177 <xref linkend="zip"/>
178 </para>
179
180 <bridgehead renderas="sect4">Recommended</bridgehead>
181 <para role="recommended">
182 <xref linkend="make-ca"/>,
183 <xref linkend="giflib"/>,
184 <xref linkend="harfbuzz"/>,
185 <xref linkend="lcms2"/>,
186 <xref linkend="libjpeg"/>,
187 <xref linkend="libpng"/>, and
188 <xref linkend="wget"/>
189 </para>
190
191 <bridgehead renderas="sect4">Optional</bridgehead>
192 <para role="optional">
193 <xref linkend="git"/>,
194 <xref linkend="graphviz"/>,
195 <xref linkend="mercurial"/>,
196<!-- not needed now, it seems
197 an X Window manager such as <xref linkend="twm"/> (for the tests), and
198-->
199 <ulink url="https://ccache.dev/">ccache</ulink>,
200 <ulink url="https://pandoc.org/">pandoc</ulink>, and
201 <ulink url="https://zlib.net/pigz">pigz</ulink>
202 </para>
203
204
205 </sect2>
206
207 <sect2 role="installation">
208 <title>Installation of OpenJDK</title>
209
210 <para>
211 If you have downloaded the optional test harness, unpack it now:
212 </para>
213
214<screen><userinput>tar -xf ../jtreg-&jtreg-version;.tar.gz</userinput></screen>
215<!--
216 <para>
217 Apply a patch to allow building with make-4.3:
218 </para>
219
220<screen><userinput>patch -p1 -i ../openjdk-&openjdk-version;-make_4.3_fix-1.patch</userinput></screen>
221
222 <para>
223 Fix an issue coming from a removed header in glibc-2.32:
224 </para>
225
226<screen><userinput>sed -i /sysctl/d \
227 src/jdk.incubator.jpackage/unix/native/libapplauncher/PosixPlatform.cpp</userinput></screen>
228-->
229 <note>
230 <para>
231 Before proceeding, you should ensure that your environment
232 <envar>PATH</envar> variable contains the location of the Java
233 compiler used for bootstrapping <application>OpenJDK</application>.
234 This is the only requirement for the environment. Modern Java
235 installations do not need <envar>JAVA_HOME</envar> and
236 <envar>CLASSPATH</envar> is not used here. Furthermore, OpenJDK
237 developers recommend unsetting <envar>JAVA_HOME</envar>.
238 </para>
239
240 <para>
241 The build system does not allow the <option>-j</option> switch in
242 <envar>MAKEFLAGS</envar>. See the command explanation for
243 <option>--with-jobs=</option>
244 for more information on customizing parallelization.
245 </para>
246 </note>
247
248 <para>
249 Configure and build the package with the following commands:
250 </para>
251
252<screen><userinput>unset JAVA_HOME &amp;&amp;
253bash configure --enable-unlimited-crypto \
254 --disable-warnings-as-errors \
255 --with-stdc++lib=dynamic \
256 --with-giflib=system \
257 --with-harfbuzz=system \
258 --with-jtreg=$PWD/jtreg \
259 --with-lcms=system \
260 --with-libjpeg=system \
261 --with-libpng=system \
262 --with-zlib=system \
263 --with-version-build="&openjdk-build;" \
264 --with-version-pre="" \
265 --with-version-opt="" \
266 --with-cacerts-file=/etc/pki/tls/java/cacerts &amp;&amp;
267make images</userinput></screen>
268
269 <para>
270 To test the results, you will need to execute the jtreg program.
271 You can set the number of concurrent tests by adding the
272 <parameter>-conc:<replaceable>&lt;X&gt;</replaceable></parameter>
273 value in the below command (tests will run sequentially otherwise):
274 </para>
275
276<screen remap="test"><userinput>export JT_JAVA=$(echo $PWD/build/*/jdk) &amp;&amp;
277jtreg/bin/jtreg -jdk:$JT_JAVA -automatic -ignore:quiet -v1 \
278 test/jdk:tier1 test/langtools:tier1 &amp;&amp;
279unset JT_JAVA</userinput></screen>
280
281 <para>
282 For more control over the test suite, review the documentation
283 available in <filename>jtreg/doc/jtreg/usage.txt</filename>. To review
284 the results, see the files
285 <filename>JTreport/test_{jdk,langtools}/text/stats.txt</filename> and
286 <filename>JTreport/test_{jdk,langtools}/text/summary.txt</filename>.
287 You should expect to see around 60 failures and 10 errors.
288 </para>
289 <!--
290 14.0.1+7:
291 for x86_64: passed: 5,836; failed: 42; error: 50
292 17.0.2+8:
293 for x86_64: passed: 6,238; failed: 48; error: 13
294 for i686: passed: 6,208; failed: 29; error: 6
295 18.0.1+10:
296 for x86_64: passed: 6,323; failed: 53; error: 14
297 for i686: passed: 6,290; failed: 29; error: 11
298 18.0.1.1+2:
299 for x86_64: passed: 6,323; failed: 53; error: 14
300 for i686: passed: 6,290; failed: 29; error: 11
301 18.0.2+8:
302 for x86_64: passed: 6,329; failed: 50; error: 14
303 for i686: passed: 6,289; failed: 31; error: 13
304 19.0.1+10:
305 for x86_64: passed: 6,423; failed: 58; error: 15
306 for i686: passed: 6,376; failed: 31; error: 12
307 19.0.2+7:
308 for x86_64: passed: 6,426; failed: 61; error: 14
309 for i686: passed: 6,377; failed: 34; error: 11
310 20.0.1+9:
311 for x86_64: passed: 6,515; failed: 65; error: 13
312 for i686: passed: 6,520; failed: 60; error: 13
313 20.0.2+9:
314 for x86_64: passed: 6,515; failed: 65; error: 14
315 for i686: passed: 6,446; failed: 33; error: 12
316 21+35:
317 for x86_64: passed: 6,699; failed: 72; error: 13
318 for i686: passed: 6,627; failed: 30; error: 10
319 -->
320
321 <para>
322 Install the package with the following commands as the
323 <systemitem class="username">root</systemitem> user:
324 </para>
325
326<screen role="root"><userinput>install -vdm755 /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
327cp -Rv build/*/images/jdk/* /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
328chown -R root:root /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
329for s in 16 24 32 48; do
330 install -vDm644 src/java.desktop/unix/classes/sun/awt/X11/java-icon${s}.png \
331 /usr/share/icons/hicolor/${s}x${s}/apps/java.png
332done</userinput></screen>
333
334 <note>
335 <para>
336 If you only wish to install the Java Runtime Environment, you can
337 substitute <filename>build/*/images/jre</filename> in the above
338 <command>cp</command> command.
339 </para>
340 </note>
341
342 <para>
343 There are now two <application>OpenJDK</application> SDKs installed
344 in <filename class="directory">/opt</filename>. You should decide on
345 which one you would like to use as the default. Normally, you would opt
346 for the just installed <application>OpenJDK</application>. If so, do
347 the following as the <systemitem class="username">root</systemitem>
348 user:
349 </para>
350
351<screen role="root"><userinput>ln -v -nsf jdk-&openjdk-version;+&openjdk-build; /opt/jdk</userinput></screen>
352
353 <para>
354 If desired, you can create .desktop files to add entries
355 in the menu for <command>java</command>
356 and <command>jconsole</command>. The needed icons have already been
357 installed. As the <systemitem class="username">root</systemitem> user:
358 </para>
359
360<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
361
362cat &gt; /usr/share/applications/openjdk-java.desktop &lt;&lt; "EOF" &amp;&amp;
363<literal>[Desktop Entry]
364Name=OpenJDK Java &openjdk-version; Runtime
365Comment=OpenJDK Java &openjdk-version; Runtime
366Exec=/opt/jdk/bin/java -jar
367Terminal=false
368Type=Application
369Icon=java
370MimeType=application/x-java-archive;application/java-archive;application/x-jar;
371NoDisplay=true</literal>
372EOF
373cat &gt; /usr/share/applications/openjdk-jconsole.desktop &lt;&lt; "EOF"
374<literal>[Desktop Entry]
375Name=OpenJDK Java &openjdk-version; Console
376Comment=OpenJDK Java &openjdk-version; Console
377Keywords=java;console;monitoring
378Exec=/opt/jdk/bin/jconsole
379Terminal=false
380Type=Application
381Icon=java
382Categories=Application;System;</literal>
383EOF</userinput></screen>
384
385 </sect2>
386
387 <sect2 role="commands">
388 <title>Command Explanations</title>
389
390 <para>
391 <command>bash configure...</command>: the top level
392 <filename>configure</filename> is a wrapper around the autotools one.
393 It is not executable and must be run through <command>bash</command>.
394 </para>
395<!-- Not needed in openjdk-15
396 <para>
397 <parameter>- -with-extra-cflags=-fcommon</parameter>: Allows building
398 with GCC 10.
399 </para>
400-->
401 <para>
402 <parameter>--enable-unlimited-crypto</parameter>: Because of limitations
403 on the usage of cryptography in some countries, there is the possibility
404 to limit the size of encryption keys and the use of some algorithms in a
405 policy file. This switch allows to ship a policy file with no
406 restriction. It is the responsibility of the user to ensure proper
407 adherence to the law.
408 </para>
409
410 <para>
411 <parameter>--disable-warnings-as-errors</parameter>: This switch disables
412 use of <envar>-Werror</envar> in the build.
413 </para>
414
415 <para>
416 <parameter>--with-stdc++lib=dynamic</parameter>: This switch forces the
417 build system to link to <filename>libstdc++.so</filename> (dynamic)
418 instead of <filename>libstdc++.a</filename> (static).
419 </para>
420
421 <para>
422 <option>--with-jobs=<replaceable>&lt;X&gt;</replaceable></option>:
423 The <parameter>-j</parameter> passed to make does not work with make as
424 invoked here. By default, the build system will use the number of
425 CPUs - 1.
426 </para>
427
428 <para>
429 <parameter>--with-jtreg=$PWD/jtreg</parameter>: This switch tells
430 configure where to find jtreg. Omit if you have not downloaded the
431 optional test suite.
432 </para>
433
434 <para>
435 <parameter>--with-{giflib,harfbuzz,lcms,libjpeg,libpng,zlib}=system</parameter>:
436 These switches force the build system to use the system libraries instead
437 of the bundled versions.
438 </para>
439
440 <para>
441 <parameter>--with-version-build</parameter>: Currently, the build
442 system does not include the build number in the version string. It has
443 to be specified here.
444 </para>
445
446 <para>
447 <parameter>--with-version-pre</parameter>: This switch allows you to
448 prefix the version string with a custom string.
449 </para>
450
451 <para>
452 <parameter>--with-version-opt</parameter>: This switch allows you to add
453 an optional build description to the version string.
454 </para>
455
456 <para>
457 <parameter>--with-cacerts-file=/etc/pki/tls/java/cacerts</parameter>:
458 Specifies where to find a <filename>cacerts</filename> file,
459 <filename>/etc/pki/tls/java/</filename> on a BLFS system. Otherwise, an
460 empty one is created. You can use the
461 <command>/usr/sbin/make-ca --force</command> command to generate it, once
462 you have installed the Java binaries.
463 </para>
464
465 <para>
466 <option>--with-boot-jdk</option>: This switch provides the
467 location of the temporary <application>JDK</application>. It is normally
468 not needed if <command>java</command> is found in the <envar>PATH</envar>.
469 </para>
470<!-- Seems to have disappeared
471 <para>
472 <command>find ... -iname '*.diz' -delete</command>: This command
473 removes redundant files.
474 </para>
475-->
476 </sect2>
477
478 <sect2 role="configuration"
479 id="openjdk-config"
480 xreflabel="Configuring OpenJDK">
481 <title>Configuring OpenJDK</title>
482
483 <sect3>
484 <title>Configuration Information</title>
485
486 <para>
487 Normally, the JAVA environment has been configured after installing
488 the binary version, and can be used with the just built package as well.
489 Review <xref linkend="ojdk-conf"/> in case you want to modify
490 something.
491 </para>
492
493 <para>
494 To test if the man pages are correctly installed, issue
495 <command>source /etc/profile</command> and <command>man java</command>
496 to display the respective man page.
497 </para>
498
499 </sect3>
500
501 <sect3>
502 <title>
503 Setting up the JRE Certificate Authority Certificates (cacerts) file
504 </title>
505
506 <para>
507 If you have run the instructions on the <xref linkend="make-ca"/> page,
508 you only need to create a symlink in the default location for the
509 <filename>cacerts</filename> file. As user <systemitem
510 class="username">root</systemitem>:
511 </para>
512
513<screen role="root"><userinput>ln -sfv /etc/pki/tls/java/cacerts /opt/jdk/lib/security/cacerts</userinput></screen>
514
515 <para>
516 To check the installation, issue:
517 </para>
518
519<screen role="root"><userinput>cd /opt/jdk
520bin/keytool -list -cacerts</userinput></screen>
521
522 <para>
523 At the prompt <computeroutput>Enter keystore password:</computeroutput>,
524 enter <userinput>changeit</userinput> (the default) or just press the
525 <quote>Enter</quote> key. If the <filename>cacerts</filename> file was
526 installed correctly, you will see a list of the certificates with
527 related information for each one. If not, you need to reinstall them.
528 </para>
529
530 </sect3>
531
532 </sect2>
533
534 <sect2 role="content">
535 <title>Contents</title>
536
537 <segmentedlist>
538 <segtitle>Installed Programs</segtitle>
539 <segtitle>Installed Libraries</segtitle>
540 <segtitle>Installed Directory</segtitle>
541
542 <seglistitem>
543 <seg>jar, jarsigner, java, javac, javadoc, javap, jcmd,
544 jconsole, jdb, jdeprscan, jdeps, jfr, jhsdb, jimage, jinfo,
545 jlink, jmap, jmod, jpackage, jps, jrunscript, jshell, jstack,
546 jstat, jstatd, jwebserver, keytool, rmiregistry, and serialver</seg>
547 <seg>37 libraries in /opt/jdk-&openjdk-version;+&openjdk-build;/lib/</seg>
548 <seg>/opt/jdk-&openjdk-version;+&openjdk-build;</seg>
549 </seglistitem>
550 </segmentedlist>
551
552 <variablelist>
553 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
554 <?dbfo list-presentation="list"?>
555 <?dbhtml list-presentation="table"?>
556
557 <varlistentry id="jar">
558 <term><command>jar</command></term>
559 <listitem>
560 <para>
561 combines multiple files into a single jar archive
562 </para>
563 <indexterm zone="openjdk jar">
564 <primary sortas="b-jar">jar</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="jarsigner">
570 <term><command>jarsigner</command></term>
571 <listitem>
572 <para>
573 signs jar files and verifies the signatures and integrity
574 of a signed jar file
575 </para>
576 <indexterm zone="openjdk jarsigner">
577 <primary sortas="b-jarsigner">jarsigner</primary>
578 </indexterm>
579 </listitem>
580 </varlistentry>
581
582 <varlistentry id="java-prog">
583 <term><command>java</command></term>
584 <listitem>
585 <para>
586 launches a Java application by starting a Java runtime
587 environment, loading a specified class and invoking its main
588 method
589 </para>
590 <indexterm zone="openjdk java-prog">
591 <primary sortas="b-java-prog">java</primary>
592 </indexterm>
593 </listitem>
594 </varlistentry>
595
596 <varlistentry id="javac">
597 <term><command>javac</command></term>
598 <listitem>
599 <para>
600 reads class and interface definitions, written in the
601 Java programming language, and compiles them into bytecode
602 class files
603 </para>
604 <indexterm zone="openjdk javac">
605 <primary sortas="b-javac">javac</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="javadoc">
611 <term><command>javadoc</command></term>
612 <listitem>
613 <para>
614 parses the declarations and documentation comments in a
615 set of Java source files and produces a corresponding set of
616 HTML pages describing the classes, interfaces, constructors,
617 methods, and fields
618 </para>
619 <indexterm zone="openjdk javadoc">
620 <primary sortas="b-javadoc">javadoc</primary>
621 </indexterm>
622 </listitem>
623 </varlistentry>
624
625 <varlistentry id="javap">
626 <term><command>javap</command></term>
627 <listitem>
628 <para>
629 disassembles a Java class file
630 </para>
631 <indexterm zone="openjdk javap">
632 <primary sortas="b-javap">javap</primary>
633 </indexterm>
634 </listitem>
635 </varlistentry>
636
637 <varlistentry id="jcmd">
638 <term><command>jcmd</command></term>
639 <listitem>
640 <para>
641 is a utility to send diagnostic command requests to a running
642 Java Virtual Machine
643 </para>
644 <indexterm zone="openjdk jcmd">
645 <primary sortas="b-jcmd">jcmd</primary>
646 </indexterm>
647 </listitem>
648 </varlistentry>
649
650 <varlistentry id="jconsole">
651 <term><command>jconsole</command></term>
652 <listitem>
653 <para>
654 is a graphical console tool to monitor and manage both
655 local and remote Java applications and virtual machines
656 </para>
657 <indexterm zone="openjdk jconsole">
658 <primary sortas="b-jconsole">jconsole</primary>
659 </indexterm>
660 </listitem>
661 </varlistentry>
662
663 <varlistentry id="jdb">
664 <term><command>jdb</command></term>
665 <listitem>
666 <para>
667 is a simple command-line debugger for Java classes
668 </para>
669 <indexterm zone="openjdk jdb">
670 <primary sortas="b-jdb">jdb</primary>
671 </indexterm>
672 </listitem>
673 </varlistentry>
674
675 <varlistentry id="jdeprscan">
676 <term><command>jdeprscan</command></term>
677 <listitem>
678 <para>
679 scans class or jar files for uses of deprecated API elements
680 </para>
681 <indexterm zone="openjdk jdeprscan">
682 <primary sortas="b-jdeprscan">jdeprscan</primary>
683 </indexterm>
684 </listitem>
685 </varlistentry>
686
687 <varlistentry id="jdeps">
688 <term><command>jdeps</command></term>
689 <listitem>
690 <para>
691 shows the package-level or class-level dependencies of
692 Java class files
693 </para>
694 <indexterm zone="openjdk jdeps">
695 <primary sortas="b-jdeps">jdeps</primary>
696 </indexterm>
697 </listitem>
698 </varlistentry>
699
700 <varlistentry id="jfr">
701 <term><command>jfr</command></term>
702 <listitem>
703 <para>
704 is a tool for working with <quote>Flight Recorder</quote> files
705 </para>
706 <indexterm zone="openjdk jfr">
707 <primary sortas="b-jfr">jfr</primary>
708 </indexterm>
709 </listitem>
710 </varlistentry>
711
712 <varlistentry id="jhsdb">
713 <term><command>jhsdb</command></term>
714 <listitem>
715 <para>
716 is a tool to analyze the content of a core dump from a
717 crashed Java Virtual Machine (JVM)
718 </para>
719 <indexterm zone="openjdk jhsdb">
720 <primary sortas="b-jhsdb">jhsdb</primary>
721 </indexterm>
722 </listitem>
723 </varlistentry>
724
725 <varlistentry id="jimage">
726 <term><command>jimage</command></term>
727 <listitem>
728 <para>
729 is used to list, extract, verify, or get information about
730 modules in <emphasis>jimage</emphasis> format
731 </para>
732 <indexterm zone="openjdk jimage">
733 <primary sortas="b-jimage">jimage</primary>
734 </indexterm>
735 </listitem>
736 </varlistentry>
737
738 <varlistentry id="jinfo">
739 <term><command>jinfo</command></term>
740 <listitem>
741 <para>
742 prints Java configuration information for a given Java
743 process, core file, or a remote debug server
744 </para>
745 <indexterm zone="openjdk jinfo">
746 <primary sortas="b-jinfo">jinfo</primary>
747 </indexterm>
748 </listitem>
749 </varlistentry>
750
751 <varlistentry id="jlink">
752 <term><command>jlink</command></term>
753 <listitem>
754 <para>
755 is used to assemble and optimize a set of modules and their
756 dependencies into a custom runtime image
757 </para>
758 <indexterm zone="openjdk jlink">
759 <primary sortas="b-jlink">jlink</primary>
760 </indexterm>
761 </listitem>
762 </varlistentry>
763
764 <varlistentry id="jmap">
765 <term><command>jmap</command></term>
766 <listitem>
767 <para>
768 prints shared object memory maps or heap memory details
769 of a given process, core file, or a remote debug server
770 </para>
771 <indexterm zone="openjdk jmap">
772 <primary sortas="b-jmap">jmap</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="jmod">
778 <term><command>jmod</command></term>
779 <listitem>
780 <para>
781 creates JMOD files and lists the content of existing JMOD files
782 </para>
783 <indexterm zone="openjdk jmod">
784 <primary sortas="b-jmod">jmod</primary>
785 </indexterm>
786 </listitem>
787 </varlistentry>
788
789 <varlistentry id="jpackage">
790 <term><command>jpackage</command></term>
791 <listitem>
792 <para>
793 generates java application packages and images
794 </para>
795 <indexterm zone="openjdk jpackage">
796 <primary sortas="b-jpackage">jpackage</primary>
797 </indexterm>
798 </listitem>
799 </varlistentry>
800
801 <varlistentry id="jps">
802 <term><command>jps</command></term>
803 <listitem>
804 <para>
805 lists the instrumented JVMs on the target system
806 </para>
807 <indexterm zone="openjdk jps">
808 <primary sortas="b-jps">jps</primary>
809 </indexterm>
810 </listitem>
811 </varlistentry>
812
813 <varlistentry id="jrunscript">
814 <term><command>jrunscript</command></term>
815 <listitem>
816 <para>
817 is a command line script shell
818 </para>
819 <indexterm zone="openjdk jrunscript">
820 <primary sortas="b-jrunscript">jrunscript</primary>
821 </indexterm>
822 </listitem>
823 </varlistentry>
824
825 <varlistentry id="jshell">
826 <term><command>jshell</command></term>
827 <listitem>
828 <para>
829 is an interactive tool for learning the Java programming
830 language and prototyping Java code
831 </para>
832 <indexterm zone="openjdk jshell">
833 <primary sortas="b-jshell">jshell</primary>
834 </indexterm>
835 </listitem>
836 </varlistentry>
837
838 <varlistentry id="jstack">
839 <term><command>jstack</command></term>
840 <listitem>
841 <para>
842 prints Java stack traces of Java threads for a given
843 Java process, core file, or a remote debug server
844 </para>
845 <indexterm zone="openjdk jstack">
846 <primary sortas="b-jstack">jstack</primary>
847 </indexterm>
848 </listitem>
849 </varlistentry>
850
851 <varlistentry id="jstat">
852 <term><command>jstat</command></term>
853 <listitem>
854 <para>
855 displays performance statistics for an instrumented JVM
856 </para>
857 <indexterm zone="openjdk jstat">
858 <primary sortas="b-jstat">jstat</primary>
859 </indexterm>
860 </listitem>
861 </varlistentry>
862
863 <varlistentry id="jstatd">
864 <term><command>jstatd</command></term>
865 <listitem>
866 <para>
867 is an RMI server application that monitors for the creation
868 and termination of instrumented JVMs
869 </para>
870 <indexterm zone="openjdk jstatd">
871 <primary sortas="b-jstatd">jstatd</primary>
872 </indexterm>
873 </listitem>
874 </varlistentry>
875
876 <varlistentry id="jwebserver">
877 <term><command>jwebserver</command></term>
878 <listitem>
879 <para>
880 provides a minimal HTTP server, designed to be used for
881 prototyping, testing, and debugging
882 </para>
883 <indexterm zone="openjdk jwebserver">
884 <primary sortas="b-jwebserver">jwebserver</primary>
885 </indexterm>
886 </listitem>
887 </varlistentry>
888
889 <varlistentry id="keytool">
890 <term><command>keytool</command></term>
891 <listitem>
892 <para>
893 is a key and certificate management utility
894 </para>
895 <indexterm zone="openjdk keytool">
896 <primary sortas="b-keytool">keytool</primary>
897 </indexterm>
898 </listitem>
899 </varlistentry>
900
901 <varlistentry id="rmiregistry">
902 <term><command>rmiregistry</command></term>
903 <listitem>
904 <para>
905 creates and starts a remote object registry on the specified
906 port on the current host
907 </para>
908 <indexterm zone="openjdk rmiregistry">
909 <primary sortas="b-rmiregistry">rmiregistry</primary>
910 </indexterm>
911 </listitem>
912 </varlistentry>
913
914 <varlistentry id="serialver">
915 <term><command>serialver</command></term>
916 <listitem>
917 <para>
918 returns the serialVersionUID for one or more classes in a
919 form suitable for copying into an evolving class
920 </para>
921 <indexterm zone="openjdk serialver">
922 <primary sortas="b-serialver">serialver</primary>
923 </indexterm>
924 </listitem>
925 </varlistentry>
926 </variablelist>
927
928 </sect2>
929
930</sect1>
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