source: general/prog/openjdk.xml@ 9393fde

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Last change on this file since 9393fde was 9393fde, checked in by Douglas R. Reno <renodr@…>, 7 months ago

Update to OpenJDK-21.0.1

  • Property mode set to 100644
File size: 31.6 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 "3c39c7d14a03b0b3d0aaaecb98ce307e">
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 "3.7 GB (add 569 MB for tests)">
22 <!ENTITY ojdk-time "5.2 SBU with 4 jobs (add 33 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 21.0.1+12:
320 for x86_64: passed: 6,706; failed: 72; error: 14
321 for i686: passed: 6,636; failed: 29; error: 11
322 -->
323
324 <para>
325 Install the package with the following commands as the
326 <systemitem class="username">root</systemitem> user:
327 </para>
328
329<screen role="root"><userinput>install -vdm755 /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
330cp -Rv build/*/images/jdk/* /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
331chown -R root:root /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
332for s in 16 24 32 48; do
333 install -vDm644 src/java.desktop/unix/classes/sun/awt/X11/java-icon${s}.png \
334 /usr/share/icons/hicolor/${s}x${s}/apps/java.png
335done</userinput></screen>
336
337 <note>
338 <para>
339 If you only wish to install the Java Runtime Environment, you can
340 substitute <filename>build/*/images/jre</filename> in the above
341 <command>cp</command> command.
342 </para>
343 </note>
344
345 <para>
346 There are now two <application>OpenJDK</application> SDKs installed
347 in <filename class="directory">/opt</filename>. You should decide on
348 which one you would like to use as the default. Normally, you would opt
349 for the just installed <application>OpenJDK</application>. If so, do
350 the following as the <systemitem class="username">root</systemitem>
351 user:
352 </para>
353
354<screen role="root"><userinput>ln -v -nsf jdk-&openjdk-version;+&openjdk-build; /opt/jdk</userinput></screen>
355
356 <para>
357 If desired, you can create .desktop files to add entries
358 in the menu for <command>java</command>
359 and <command>jconsole</command>. The needed icons have already been
360 installed. As the <systemitem class="username">root</systemitem> user:
361 </para>
362
363<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
364
365cat &gt; /usr/share/applications/openjdk-java.desktop &lt;&lt; "EOF" &amp;&amp;
366<literal>[Desktop Entry]
367Name=OpenJDK Java &openjdk-version; Runtime
368Comment=OpenJDK Java &openjdk-version; Runtime
369Exec=/opt/jdk/bin/java -jar
370Terminal=false
371Type=Application
372Icon=java
373MimeType=application/x-java-archive;application/java-archive;application/x-jar;
374NoDisplay=true</literal>
375EOF
376cat &gt; /usr/share/applications/openjdk-jconsole.desktop &lt;&lt; "EOF"
377<literal>[Desktop Entry]
378Name=OpenJDK Java &openjdk-version; Console
379Comment=OpenJDK Java &openjdk-version; Console
380Keywords=java;console;monitoring
381Exec=/opt/jdk/bin/jconsole
382Terminal=false
383Type=Application
384Icon=java
385Categories=Application;System;</literal>
386EOF</userinput></screen>
387
388 </sect2>
389
390 <sect2 role="commands">
391 <title>Command Explanations</title>
392
393 <para>
394 <command>bash configure...</command>: the top level
395 <filename>configure</filename> is a wrapper around the autotools one.
396 It is not executable and must be run through <command>bash</command>.
397 </para>
398<!-- Not needed in openjdk-15
399 <para>
400 <parameter>- -with-extra-cflags=-fcommon</parameter>: Allows building
401 with GCC 10.
402 </para>
403-->
404 <para>
405 <parameter>--enable-unlimited-crypto</parameter>: Because of limitations
406 on the usage of cryptography in some countries, there is the possibility
407 to limit the size of encryption keys and the use of some algorithms in a
408 policy file. This switch allows to ship a policy file with no
409 restriction. It is the responsibility of the user to ensure proper
410 adherence to the law.
411 </para>
412
413 <para>
414 <parameter>--disable-warnings-as-errors</parameter>: This switch disables
415 use of <envar>-Werror</envar> in the build.
416 </para>
417
418 <para>
419 <parameter>--with-stdc++lib=dynamic</parameter>: This switch forces the
420 build system to link to <filename>libstdc++.so</filename> (dynamic)
421 instead of <filename>libstdc++.a</filename> (static).
422 </para>
423
424 <para>
425 <option>--with-jobs=<replaceable>&lt;X&gt;</replaceable></option>:
426 The <parameter>-j</parameter> passed to make does not work with make as
427 invoked here. By default, the build system will use the number of
428 CPUs - 1.
429 </para>
430
431 <para>
432 <parameter>--with-jtreg=$PWD/jtreg</parameter>: This switch tells
433 configure where to find jtreg. Omit if you have not downloaded the
434 optional test suite.
435 </para>
436
437 <para>
438 <parameter>--with-{giflib,harfbuzz,lcms,libjpeg,libpng,zlib}=system</parameter>:
439 These switches force the build system to use the system libraries instead
440 of the bundled versions.
441 </para>
442
443 <para>
444 <parameter>--with-version-build</parameter>: Currently, the build
445 system does not include the build number in the version string. It has
446 to be specified here.
447 </para>
448
449 <para>
450 <parameter>--with-version-pre</parameter>: This switch allows you to
451 prefix the version string with a custom string.
452 </para>
453
454 <para>
455 <parameter>--with-version-opt</parameter>: This switch allows you to add
456 an optional build description to the version string.
457 </para>
458
459 <para>
460 <parameter>--with-cacerts-file=/etc/pki/tls/java/cacerts</parameter>:
461 Specifies where to find a <filename>cacerts</filename> file,
462 <filename>/etc/pki/tls/java/</filename> on a BLFS system. Otherwise, an
463 empty one is created. You can use the
464 <command>/usr/sbin/make-ca --force</command> command to generate it, once
465 you have installed the Java binaries.
466 </para>
467
468 <para>
469 <option>--with-boot-jdk</option>: This switch provides the
470 location of the temporary <application>JDK</application>. It is normally
471 not needed if <command>java</command> is found in the <envar>PATH</envar>.
472 </para>
473<!-- Seems to have disappeared
474 <para>
475 <command>find ... -iname '*.diz' -delete</command>: This command
476 removes redundant files.
477 </para>
478-->
479 </sect2>
480
481 <sect2 role="configuration"
482 id="openjdk-config"
483 xreflabel="Configuring OpenJDK">
484 <title>Configuring OpenJDK</title>
485
486 <sect3>
487 <title>Configuration Information</title>
488
489 <para>
490 Normally, the JAVA environment has been configured after installing
491 the binary version, and can be used with the just built package as well.
492 Review <xref linkend="ojdk-conf"/> in case you want to modify
493 something.
494 </para>
495
496 <para>
497 To test if the man pages are correctly installed, issue
498 <command>source /etc/profile</command> and <command>man java</command>
499 to display the respective man page.
500 </para>
501
502 </sect3>
503
504 <sect3>
505 <title>
506 Setting up the JRE Certificate Authority Certificates (cacerts) file
507 </title>
508
509 <para>
510 If you have run the instructions on the <xref linkend="make-ca"/> page,
511 you only need to create a symlink in the default location for the
512 <filename>cacerts</filename> file. As user <systemitem
513 class="username">root</systemitem>:
514 </para>
515
516<screen role="root"><userinput>ln -sfv /etc/pki/tls/java/cacerts /opt/jdk/lib/security/cacerts</userinput></screen>
517
518 <para>
519 To check the installation, issue:
520 </para>
521
522<screen role="root"><userinput>cd /opt/jdk
523bin/keytool -list -cacerts</userinput></screen>
524
525 <para>
526 At the prompt <computeroutput>Enter keystore password:</computeroutput>,
527 enter <userinput>changeit</userinput> (the default) or just press the
528 <quote>Enter</quote> key. If the <filename>cacerts</filename> file was
529 installed correctly, you will see a list of the certificates with
530 related information for each one. If not, you need to reinstall them.
531 </para>
532
533 </sect3>
534
535 </sect2>
536
537 <sect2 role="content">
538 <title>Contents</title>
539
540 <segmentedlist>
541 <segtitle>Installed Programs</segtitle>
542 <segtitle>Installed Libraries</segtitle>
543 <segtitle>Installed Directory</segtitle>
544
545 <seglistitem>
546 <seg>jar, jarsigner, java, javac, javadoc, javap, jcmd,
547 jconsole, jdb, jdeprscan, jdeps, jfr, jhsdb, jimage, jinfo,
548 jlink, jmap, jmod, jpackage, jps, jrunscript, jshell, jstack,
549 jstat, jstatd, jwebserver, keytool, rmiregistry, and serialver</seg>
550 <seg>37 libraries in /opt/jdk-&openjdk-version;+&openjdk-build;/lib/</seg>
551 <seg>/opt/jdk-&openjdk-version;+&openjdk-build;</seg>
552 </seglistitem>
553 </segmentedlist>
554
555 <variablelist>
556 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
557 <?dbfo list-presentation="list"?>
558 <?dbhtml list-presentation="table"?>
559
560 <varlistentry id="jar">
561 <term><command>jar</command></term>
562 <listitem>
563 <para>
564 combines multiple files into a single jar archive
565 </para>
566 <indexterm zone="openjdk jar">
567 <primary sortas="b-jar">jar</primary>
568 </indexterm>
569 </listitem>
570 </varlistentry>
571
572 <varlistentry id="jarsigner">
573 <term><command>jarsigner</command></term>
574 <listitem>
575 <para>
576 signs jar files and verifies the signatures and integrity
577 of a signed jar file
578 </para>
579 <indexterm zone="openjdk jarsigner">
580 <primary sortas="b-jarsigner">jarsigner</primary>
581 </indexterm>
582 </listitem>
583 </varlistentry>
584
585 <varlistentry id="java-prog">
586 <term><command>java</command></term>
587 <listitem>
588 <para>
589 launches a Java application by starting a Java runtime
590 environment, loading a specified class and invoking its main
591 method
592 </para>
593 <indexterm zone="openjdk java-prog">
594 <primary sortas="b-java-prog">java</primary>
595 </indexterm>
596 </listitem>
597 </varlistentry>
598
599 <varlistentry id="javac">
600 <term><command>javac</command></term>
601 <listitem>
602 <para>
603 reads class and interface definitions, written in the
604 Java programming language, and compiles them into bytecode
605 class files
606 </para>
607 <indexterm zone="openjdk javac">
608 <primary sortas="b-javac">javac</primary>
609 </indexterm>
610 </listitem>
611 </varlistentry>
612
613 <varlistentry id="javadoc">
614 <term><command>javadoc</command></term>
615 <listitem>
616 <para>
617 parses the declarations and documentation comments in a
618 set of Java source files and produces a corresponding set of
619 HTML pages describing the classes, interfaces, constructors,
620 methods, and fields
621 </para>
622 <indexterm zone="openjdk javadoc">
623 <primary sortas="b-javadoc">javadoc</primary>
624 </indexterm>
625 </listitem>
626 </varlistentry>
627
628 <varlistentry id="javap">
629 <term><command>javap</command></term>
630 <listitem>
631 <para>
632 disassembles a Java class file
633 </para>
634 <indexterm zone="openjdk javap">
635 <primary sortas="b-javap">javap</primary>
636 </indexterm>
637 </listitem>
638 </varlistentry>
639
640 <varlistentry id="jcmd">
641 <term><command>jcmd</command></term>
642 <listitem>
643 <para>
644 is a utility to send diagnostic command requests to a running
645 Java Virtual Machine
646 </para>
647 <indexterm zone="openjdk jcmd">
648 <primary sortas="b-jcmd">jcmd</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="jconsole">
654 <term><command>jconsole</command></term>
655 <listitem>
656 <para>
657 is a graphical console tool to monitor and manage both
658 local and remote Java applications and virtual machines
659 </para>
660 <indexterm zone="openjdk jconsole">
661 <primary sortas="b-jconsole">jconsole</primary>
662 </indexterm>
663 </listitem>
664 </varlistentry>
665
666 <varlistentry id="jdb">
667 <term><command>jdb</command></term>
668 <listitem>
669 <para>
670 is a simple command-line debugger for Java classes
671 </para>
672 <indexterm zone="openjdk jdb">
673 <primary sortas="b-jdb">jdb</primary>
674 </indexterm>
675 </listitem>
676 </varlistentry>
677
678 <varlistentry id="jdeprscan">
679 <term><command>jdeprscan</command></term>
680 <listitem>
681 <para>
682 scans class or jar files for uses of deprecated API elements
683 </para>
684 <indexterm zone="openjdk jdeprscan">
685 <primary sortas="b-jdeprscan">jdeprscan</primary>
686 </indexterm>
687 </listitem>
688 </varlistentry>
689
690 <varlistentry id="jdeps">
691 <term><command>jdeps</command></term>
692 <listitem>
693 <para>
694 shows the package-level or class-level dependencies of
695 Java class files
696 </para>
697 <indexterm zone="openjdk jdeps">
698 <primary sortas="b-jdeps">jdeps</primary>
699 </indexterm>
700 </listitem>
701 </varlistentry>
702
703 <varlistentry id="jfr">
704 <term><command>jfr</command></term>
705 <listitem>
706 <para>
707 is a tool for working with <quote>Flight Recorder</quote> files
708 </para>
709 <indexterm zone="openjdk jfr">
710 <primary sortas="b-jfr">jfr</primary>
711 </indexterm>
712 </listitem>
713 </varlistentry>
714
715 <varlistentry id="jhsdb">
716 <term><command>jhsdb</command></term>
717 <listitem>
718 <para>
719 is a tool to analyze the content of a core dump from a
720 crashed Java Virtual Machine (JVM)
721 </para>
722 <indexterm zone="openjdk jhsdb">
723 <primary sortas="b-jhsdb">jhsdb</primary>
724 </indexterm>
725 </listitem>
726 </varlistentry>
727
728 <varlistentry id="jimage">
729 <term><command>jimage</command></term>
730 <listitem>
731 <para>
732 is used to list, extract, verify, or get information about
733 modules in <emphasis>jimage</emphasis> format
734 </para>
735 <indexterm zone="openjdk jimage">
736 <primary sortas="b-jimage">jimage</primary>
737 </indexterm>
738 </listitem>
739 </varlistentry>
740
741 <varlistentry id="jinfo">
742 <term><command>jinfo</command></term>
743 <listitem>
744 <para>
745 prints Java configuration information for a given Java
746 process, core file, or a remote debug server
747 </para>
748 <indexterm zone="openjdk jinfo">
749 <primary sortas="b-jinfo">jinfo</primary>
750 </indexterm>
751 </listitem>
752 </varlistentry>
753
754 <varlistentry id="jlink">
755 <term><command>jlink</command></term>
756 <listitem>
757 <para>
758 is used to assemble and optimize a set of modules and their
759 dependencies into a custom runtime image
760 </para>
761 <indexterm zone="openjdk jlink">
762 <primary sortas="b-jlink">jlink</primary>
763 </indexterm>
764 </listitem>
765 </varlistentry>
766
767 <varlistentry id="jmap">
768 <term><command>jmap</command></term>
769 <listitem>
770 <para>
771 prints shared object memory maps or heap memory details
772 of a given process, core file, or a remote debug server
773 </para>
774 <indexterm zone="openjdk jmap">
775 <primary sortas="b-jmap">jmap</primary>
776 </indexterm>
777 </listitem>
778 </varlistentry>
779
780 <varlistentry id="jmod">
781 <term><command>jmod</command></term>
782 <listitem>
783 <para>
784 creates JMOD files and lists the content of existing JMOD files
785 </para>
786 <indexterm zone="openjdk jmod">
787 <primary sortas="b-jmod">jmod</primary>
788 </indexterm>
789 </listitem>
790 </varlistentry>
791
792 <varlistentry id="jpackage">
793 <term><command>jpackage</command></term>
794 <listitem>
795 <para>
796 generates java application packages and images
797 </para>
798 <indexterm zone="openjdk jpackage">
799 <primary sortas="b-jpackage">jpackage</primary>
800 </indexterm>
801 </listitem>
802 </varlistentry>
803
804 <varlistentry id="jps">
805 <term><command>jps</command></term>
806 <listitem>
807 <para>
808 lists the instrumented JVMs on the target system
809 </para>
810 <indexterm zone="openjdk jps">
811 <primary sortas="b-jps">jps</primary>
812 </indexterm>
813 </listitem>
814 </varlistentry>
815
816 <varlistentry id="jrunscript">
817 <term><command>jrunscript</command></term>
818 <listitem>
819 <para>
820 is a command line script shell
821 </para>
822 <indexterm zone="openjdk jrunscript">
823 <primary sortas="b-jrunscript">jrunscript</primary>
824 </indexterm>
825 </listitem>
826 </varlistentry>
827
828 <varlistentry id="jshell">
829 <term><command>jshell</command></term>
830 <listitem>
831 <para>
832 is an interactive tool for learning the Java programming
833 language and prototyping Java code
834 </para>
835 <indexterm zone="openjdk jshell">
836 <primary sortas="b-jshell">jshell</primary>
837 </indexterm>
838 </listitem>
839 </varlistentry>
840
841 <varlistentry id="jstack">
842 <term><command>jstack</command></term>
843 <listitem>
844 <para>
845 prints Java stack traces of Java threads for a given
846 Java process, core file, or a remote debug server
847 </para>
848 <indexterm zone="openjdk jstack">
849 <primary sortas="b-jstack">jstack</primary>
850 </indexterm>
851 </listitem>
852 </varlistentry>
853
854 <varlistentry id="jstat">
855 <term><command>jstat</command></term>
856 <listitem>
857 <para>
858 displays performance statistics for an instrumented JVM
859 </para>
860 <indexterm zone="openjdk jstat">
861 <primary sortas="b-jstat">jstat</primary>
862 </indexterm>
863 </listitem>
864 </varlistentry>
865
866 <varlistentry id="jstatd">
867 <term><command>jstatd</command></term>
868 <listitem>
869 <para>
870 is an RMI server application that monitors for the creation
871 and termination of instrumented JVMs
872 </para>
873 <indexterm zone="openjdk jstatd">
874 <primary sortas="b-jstatd">jstatd</primary>
875 </indexterm>
876 </listitem>
877 </varlistentry>
878
879 <varlistentry id="jwebserver">
880 <term><command>jwebserver</command></term>
881 <listitem>
882 <para>
883 provides a minimal HTTP server, designed to be used for
884 prototyping, testing, and debugging
885 </para>
886 <indexterm zone="openjdk jwebserver">
887 <primary sortas="b-jwebserver">jwebserver</primary>
888 </indexterm>
889 </listitem>
890 </varlistentry>
891
892 <varlistentry id="keytool">
893 <term><command>keytool</command></term>
894 <listitem>
895 <para>
896 is a key and certificate management utility
897 </para>
898 <indexterm zone="openjdk keytool">
899 <primary sortas="b-keytool">keytool</primary>
900 </indexterm>
901 </listitem>
902 </varlistentry>
903
904 <varlistentry id="rmiregistry">
905 <term><command>rmiregistry</command></term>
906 <listitem>
907 <para>
908 creates and starts a remote object registry on the specified
909 port on the current host
910 </para>
911 <indexterm zone="openjdk rmiregistry">
912 <primary sortas="b-rmiregistry">rmiregistry</primary>
913 </indexterm>
914 </listitem>
915 </varlistentry>
916
917 <varlistentry id="serialver">
918 <term><command>serialver</command></term>
919 <listitem>
920 <para>
921 returns the serialVersionUID for one or more classes in a
922 form suitable for copying into an evolving class
923 </para>
924 <indexterm zone="openjdk serialver">
925 <primary sortas="b-serialver">serialver</primary>
926 </indexterm>
927 </listitem>
928 </varlistentry>
929 </variablelist>
930
931 </sect2>
932
933</sect1>
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