source: general/prog/openjdk.xml@ 2d16a06

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Last change on this file since 2d16a06 was 6156212c, checked in by Bruce Dubbs <bdubbs@…>, 10 months ago

Update to php-8.2.9 (Security update) and tags.

Finish tagging all packages in /general/progs/

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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/jdk20u">
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 "0a6c990bd0a4eee6eee06e89b74cde19">
14 <!ENTITY ojdk-size "105 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 "3.6 GB (add 800 MB for tests)">
22 <!ENTITY ojdk-time "4.8 SBU with 4 jobs (add 36 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 -->
317
318 <para>
319 Install the package with the following commands as the
320 <systemitem class="username">root</systemitem> user:
321 </para>
322
323<screen role="root"><userinput>install -vdm755 /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
324cp -Rv build/*/images/jdk/* /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
325chown -R root:root /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
326for s in 16 24 32 48; do
327 install -vDm644 src/java.desktop/unix/classes/sun/awt/X11/java-icon${s}.png \
328 /usr/share/icons/hicolor/${s}x${s}/apps/java.png
329done</userinput></screen>
330
331 <note>
332 <para>
333 If you only wish to install the Java Runtime Environment, you can
334 substitute <filename>build/*/images/jre</filename> in the above
335 <command>cp</command> command.
336 </para>
337 </note>
338
339 <para>
340 There are now two <application>OpenJDK</application> SDKs installed
341 in <filename class="directory">/opt</filename>. You should decide on
342 which one you would like to use as the default. Normally, you would opt
343 for the just installed <application>OpenJDK</application>. If so, do
344 the following as the <systemitem class="username">root</systemitem>
345 user:
346 </para>
347
348<screen role="root"><userinput>ln -v -nsf jdk-&openjdk-version;+&openjdk-build; /opt/jdk</userinput></screen>
349
350 <para>
351 If desired, you can create .desktop files to add entries
352 in the menu for <command>java</command>
353 and <command>jconsole</command>. The needed icons have already been
354 installed. As the <systemitem class="username">root</systemitem> user:
355 </para>
356
357<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
358
359cat &gt; /usr/share/applications/openjdk-java.desktop &lt;&lt; "EOF" &amp;&amp;
360<literal>[Desktop Entry]
361Name=OpenJDK Java &openjdk-version; Runtime
362Comment=OpenJDK Java &openjdk-version; Runtime
363Exec=/opt/jdk/bin/java -jar
364Terminal=false
365Type=Application
366Icon=java
367MimeType=application/x-java-archive;application/java-archive;application/x-jar;
368NoDisplay=true</literal>
369EOF
370cat &gt; /usr/share/applications/openjdk-jconsole.desktop &lt;&lt; "EOF"
371<literal>[Desktop Entry]
372Name=OpenJDK Java &openjdk-version; Console
373Comment=OpenJDK Java &openjdk-version; Console
374Keywords=java;console;monitoring
375Exec=/opt/jdk/bin/jconsole
376Terminal=false
377Type=Application
378Icon=java
379Categories=Application;System;</literal>
380EOF</userinput></screen>
381
382 </sect2>
383
384 <sect2 role="commands">
385 <title>Command Explanations</title>
386
387 <para>
388 <command>bash configure...</command>: the top level
389 <filename>configure</filename> is a wrapper around the autotools one.
390 It is not executable and must be run through <command>bash</command>.
391 </para>
392<!-- Not needed in openjdk-15
393 <para>
394 <parameter>- -with-extra-cflags=-fcommon</parameter>: Allows building
395 with GCC 10.
396 </para>
397-->
398 <para>
399 <parameter>--enable-unlimited-crypto</parameter>: Because of limitations
400 on the usage of cryptography in some countries, there is the possibility
401 to limit the size of encryption keys and the use of some algorithms in a
402 policy file. This switch allows to ship a policy file with no
403 restriction. It is the responsibility of the user to ensure proper
404 adherence to the law.
405 </para>
406
407 <para>
408 <parameter>--disable-warnings-as-errors</parameter>: This switch disables
409 use of <envar>-Werror</envar> in the build.
410 </para>
411
412 <para>
413 <parameter>--with-stdc++lib=dynamic</parameter>: This switch forces the
414 build system to link to <filename>libstdc++.so</filename> (dynamic)
415 instead of <filename>libstdc++.a</filename> (static).
416 </para>
417
418 <para>
419 <option>--with-jobs=<replaceable>&lt;X&gt;</replaceable></option>:
420 The <parameter>-j</parameter> passed to make does not work with make as
421 invoked here. By default, the build system will use the number of
422 CPUs - 1.
423 </para>
424
425 <para>
426 <parameter>--with-jtreg=$PWD/jtreg</parameter>: This switch tells
427 configure where to find jtreg. Omit if you have not downloaded the
428 optional test suite.
429 </para>
430
431 <para>
432 <parameter>--with-{giflib,harfbuzz,lcms,libjpeg,libpng,zlib}=system</parameter>:
433 These switches force the build system to use the system libraries instead
434 of the bundled versions.
435 </para>
436
437 <para>
438 <parameter>--with-version-build</parameter>: Currently, the build
439 system does not include the build number in the version string. It has
440 to be specified here.
441 </para>
442
443 <para>
444 <parameter>--with-version-pre</parameter>: This switch allows you to
445 prefix the version string with a custom string.
446 </para>
447
448 <para>
449 <parameter>--with-version-opt</parameter>: This switch allows you to add
450 an optional build description to the version string.
451 </para>
452
453 <para>
454 <parameter>--with-cacerts-file=/etc/pki/tls/java/cacerts</parameter>:
455 Specifies where to find a <filename>cacerts</filename> file,
456 <filename>/etc/pki/tls/java/</filename> on a BLFS system. Otherwise, an
457 empty one is created. You can use the
458 <command>/usr/sbin/make-ca --force</command> command to generate it, once
459 you have installed the Java binaries.
460 </para>
461
462 <para>
463 <option>--with-boot-jdk</option>: This switch provides the
464 location of the temporary <application>JDK</application>. It is normally
465 not needed if <command>java</command> is found in the <envar>PATH</envar>.
466 </para>
467<!-- Seems to have disappeared
468 <para>
469 <command>find ... -iname '*.diz' -delete</command>: This command
470 removes redundant files.
471 </para>
472-->
473 </sect2>
474
475 <sect2 role="configuration"
476 id="openjdk-config"
477 xreflabel="Configuring OpenJDK">
478 <title>Configuring OpenJDK</title>
479
480 <sect3>
481 <title>Configuration Information</title>
482
483 <para>
484 Normally, the JAVA environment has been configured after installing
485 the binary version, and can be used with the just built package as well.
486 Review <xref linkend="ojdk-conf"/> in case you want to modify
487 something.
488 </para>
489
490 <para>
491 To test if the man pages are correctly installed, issue
492 <command>source /etc/profile</command> and <command>man java</command>
493 to display the respective man page.
494 </para>
495
496 </sect3>
497
498 <sect3>
499 <title>
500 Setting up the JRE Certificate Authority Certificates (cacerts) file
501 </title>
502
503 <para>
504 If you have run the instructions on the <xref linkend="make-ca"/> page,
505 you only need to create a symlink in the default location for the
506 <filename>cacerts</filename> file. As user <systemitem
507 class="username">root</systemitem>:
508 </para>
509
510<screen role="root"><userinput>ln -sfv /etc/pki/tls/java/cacerts /opt/jdk/lib/security/cacerts</userinput></screen>
511
512 <para>
513 To check the installation, issue:
514 </para>
515
516<screen role="root"><userinput>cd /opt/jdk
517bin/keytool -list -cacerts</userinput></screen>
518
519 <para>
520 At the prompt <computeroutput>Enter keystore password:</computeroutput>,
521 enter <userinput>changeit</userinput> (the default) or just press the
522 <quote>Enter</quote> key. If the <filename>cacerts</filename> file was
523 installed correctly, you will see a list of the certificates with
524 related information for each one. If not, you need to reinstall them.
525 </para>
526
527 </sect3>
528
529 </sect2>
530
531 <sect2 role="content">
532 <title>Contents</title>
533
534 <segmentedlist>
535 <segtitle>Installed Programs</segtitle>
536 <segtitle>Installed Libraries</segtitle>
537 <segtitle>Installed Directory</segtitle>
538
539 <seglistitem>
540 <seg>jar, jarsigner, java, javac, javadoc, javap, jcmd,
541 jconsole, jdb, jdeprscan, jdeps, jfr, jhsdb, jimage, jinfo,
542 jlink, jmap, jmod, jpackage, jps, jrunscript, jshell, jstack,
543 jstat, jstatd, jwebserver, keytool, rmiregistry, and serialver</seg>
544 <seg>/opt/jdk-&openjdk-version;/lib/*</seg>
545 <seg>/opt/jdk-&openjdk-version;</seg>
546 </seglistitem>
547 </segmentedlist>
548
549 <variablelist>
550 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
551 <?dbfo list-presentation="list"?>
552 <?dbhtml list-presentation="table"?>
553
554<!-- Not seen in 17.0.1
555 <varlistentry id="jaotc">
556 <term><command>jaotc</command></term>
557 <listitem>
558 <para>
559 is an <quote>ahead-of-time</quote> java class compiler
560 </para>
561 <indexterm zone="openjdk jaotc">
562 <primary sortas="b-jaotc">jaotc</primary>
563 </indexterm>
564 </listitem>
565 </varlistentry>
566-->
567
568 <varlistentry id="jar">
569 <term><command>jar</command></term>
570 <listitem>
571 <para>
572 combines multiple files into a single jar archive
573 </para>
574 <indexterm zone="openjdk jar">
575 <primary sortas="b-jar">jar</primary>
576 </indexterm>
577 </listitem>
578 </varlistentry>
579
580 <varlistentry id="jarsigner">
581 <term><command>jarsigner</command></term>
582 <listitem>
583 <para>
584 signs jar files and verifies the signatures and integrity
585 of a signed jar file
586 </para>
587 <indexterm zone="openjdk jarsigner">
588 <primary sortas="b-jarsigner">jarsigner</primary>
589 </indexterm>
590 </listitem>
591 </varlistentry>
592
593 <varlistentry id="java-prog">
594 <term><command>java</command></term>
595 <listitem>
596 <para>
597 launches a Java application by starting a Java runtime
598 environment, loading a specified class and invoking its main
599 method
600 </para>
601 <indexterm zone="openjdk java-prog">
602 <primary sortas="b-java-prog">java</primary>
603 </indexterm>
604 </listitem>
605 </varlistentry>
606
607 <varlistentry id="javac">
608 <term><command>javac</command></term>
609 <listitem>
610 <para>
611 reads class and interface definitions, written in the
612 Java programming language, and compiles them into bytecode
613 class files
614 </para>
615 <indexterm zone="openjdk javac">
616 <primary sortas="b-javac">javac</primary>
617 </indexterm>
618 </listitem>
619 </varlistentry>
620
621 <varlistentry id="javadoc">
622 <term><command>javadoc</command></term>
623 <listitem>
624 <para>
625 parses the declarations and documentation comments in a
626 set of Java source files and produces a corresponding set of
627 HTML pages describing the classes, interfaces, constructors,
628 methods, and fields
629 </para>
630 <indexterm zone="openjdk javadoc">
631 <primary sortas="b-javadoc">javadoc</primary>
632 </indexterm>
633 </listitem>
634 </varlistentry>
635
636 <varlistentry id="javap">
637 <term><command>javap</command></term>
638 <listitem>
639 <para>
640 disassembles a Java class file
641 </para>
642 <indexterm zone="openjdk javap">
643 <primary sortas="b-javap">javap</primary>
644 </indexterm>
645 </listitem>
646 </varlistentry>
647
648 <varlistentry id="jcmd">
649 <term><command>jcmd</command></term>
650 <listitem>
651 <para>
652 is a utility to send diagnostic command requests to a running
653 Java Virtual Machine
654 </para>
655 <indexterm zone="openjdk jcmd">
656 <primary sortas="b-jcmd">jcmd</primary>
657 </indexterm>
658 </listitem>
659 </varlistentry>
660
661 <varlistentry id="jconsole">
662 <term><command>jconsole</command></term>
663 <listitem>
664 <para>
665 is a graphical console tool to monitor and manage both
666 local and remote Java applications and virtual machines
667 </para>
668 <indexterm zone="openjdk jconsole">
669 <primary sortas="b-jconsole">jconsole</primary>
670 </indexterm>
671 </listitem>
672 </varlistentry>
673
674 <varlistentry id="jdb">
675 <term><command>jdb</command></term>
676 <listitem>
677 <para>
678 is a simple command-line debugger for Java classes
679 </para>
680 <indexterm zone="openjdk jdb">
681 <primary sortas="b-jdb">jdb</primary>
682 </indexterm>
683 </listitem>
684 </varlistentry>
685
686 <varlistentry id="jdeprscan">
687 <term><command>jdeprscan</command></term>
688 <listitem>
689 <para>
690 scans class or jar files for uses of deprecated API elements
691 </para>
692 <indexterm zone="openjdk jdeprscan">
693 <primary sortas="b-jdeprscan">jdeprscan</primary>
694 </indexterm>
695 </listitem>
696 </varlistentry>
697
698 <varlistentry id="jdeps">
699 <term><command>jdeps</command></term>
700 <listitem>
701 <para>
702 shows the package-level or class-level dependencies of
703 Java class files
704 </para>
705 <indexterm zone="openjdk jdeps">
706 <primary sortas="b-jdeps">jdeps</primary>
707 </indexterm>
708 </listitem>
709 </varlistentry>
710
711 <varlistentry id="jfr">
712 <term><command>jfr</command></term>
713 <listitem>
714 <para>
715 is a tool for working with <quote>Flight Recorder</quote> files
716 </para>
717 <indexterm zone="openjdk jfr">
718 <primary sortas="b-jfr">jfr</primary>
719 </indexterm>
720 </listitem>
721 </varlistentry>
722
723 <varlistentry id="jhsdb">
724 <term><command>jhsdb</command></term>
725 <listitem>
726 <para>
727 is a tool to analyze the content of a core dump from a
728 crashed Java Virtual Machine (JVM)
729 </para>
730 <indexterm zone="openjdk jhsdb">
731 <primary sortas="b-jhsdb">jhsdb</primary>
732 </indexterm>
733 </listitem>
734 </varlistentry>
735
736 <varlistentry id="jimage">
737 <term><command>jimage</command></term>
738 <listitem>
739 <para>
740 is used to list, extract, verify, or get information about
741 modules in <emphasis>jimage</emphasis> format
742 </para>
743 <indexterm zone="openjdk jimage">
744 <primary sortas="b-jimage">jimage</primary>
745 </indexterm>
746 </listitem>
747 </varlistentry>
748
749 <varlistentry id="jinfo">
750 <term><command>jinfo</command></term>
751 <listitem>
752 <para>
753 prints Java configuration information for a given Java
754 process, core file, or a remote debug server
755 </para>
756 <indexterm zone="openjdk jinfo">
757 <primary sortas="b-jinfo">jinfo</primary>
758 </indexterm>
759 </listitem>
760 </varlistentry>
761<!--
762 <varlistentry id="jjs">
763 <term><command>jjs</command></term>
764 <listitem>
765 <para>
766 is a command-line tool used to invoke the Nashorn engine. It
767 can be used to interpret one or several script files, or to run
768 an interactive shell.
769 </para>
770 <indexterm zone="openjdk jjs">
771 <primary sortas="b-jjs">jjs</primary>
772 </indexterm>
773 </listitem>
774 </varlistentry>
775-->
776 <varlistentry id="jlink">
777 <term><command>jlink</command></term>
778 <listitem>
779 <para>
780 is used to assemble and optimize a set of modules and their
781 dependencies into a custom runtime image
782 </para>
783 <indexterm zone="openjdk jlink">
784 <primary sortas="b-jlink">jlink</primary>
785 </indexterm>
786 </listitem>
787 </varlistentry>
788
789 <varlistentry id="jmap">
790 <term><command>jmap</command></term>
791 <listitem>
792 <para>
793 prints shared object memory maps or heap memory details
794 of a given process, core file, or a remote debug server
795 </para>
796 <indexterm zone="openjdk jmap">
797 <primary sortas="b-jmap">jmap</primary>
798 </indexterm>
799 </listitem>
800 </varlistentry>
801
802 <varlistentry id="jmod">
803 <term><command>jmod</command></term>
804 <listitem>
805 <para>
806 creates JMOD files and lists the content of existing JMOD files
807 </para>
808 <indexterm zone="openjdk jmod">
809 <primary sortas="b-jmod">jmod</primary>
810 </indexterm>
811 </listitem>
812 </varlistentry>
813
814 <varlistentry id="jpackage">
815 <term><command>jpackage</command></term>
816 <listitem>
817 <para>
818 generates java application packages and images
819 </para>
820 <indexterm zone="openjdk jpackage">
821 <primary sortas="b-jpackage">jpackage</primary>
822 </indexterm>
823 </listitem>
824 </varlistentry>
825
826 <varlistentry id="jps">
827 <term><command>jps</command></term>
828 <listitem>
829 <para>
830 lists the instrumented JVMs on the target system
831 </para>
832 <indexterm zone="openjdk jps">
833 <primary sortas="b-jps">jps</primary>
834 </indexterm>
835 </listitem>
836 </varlistentry>
837
838 <varlistentry id="jrunscript">
839 <term><command>jrunscript</command></term>
840 <listitem>
841 <para>
842 is a command line script shell
843 </para>
844 <indexterm zone="openjdk jrunscript">
845 <primary sortas="b-jrunscript">jrunscript</primary>
846 </indexterm>
847 </listitem>
848 </varlistentry>
849
850 <varlistentry id="jshell">
851 <term><command>jshell</command></term>
852 <listitem>
853 <para>
854 is an interactive tool for learning the Java programming
855 language and prototyping Java code
856 </para>
857 <indexterm zone="openjdk jshell">
858 <primary sortas="b-jshell">jshell</primary>
859 </indexterm>
860 </listitem>
861 </varlistentry>
862
863 <varlistentry id="jstack">
864 <term><command>jstack</command></term>
865 <listitem>
866 <para>
867 prints Java stack traces of Java threads for a given
868 Java process, core file, or a remote debug server
869 </para>
870 <indexterm zone="openjdk jstack">
871 <primary sortas="b-jstack">jstack</primary>
872 </indexterm>
873 </listitem>
874 </varlistentry>
875
876 <varlistentry id="jstat">
877 <term><command>jstat</command></term>
878 <listitem>
879 <para>
880 displays performance statistics for an instrumented JVM
881 </para>
882 <indexterm zone="openjdk jstat">
883 <primary sortas="b-jstat">jstat</primary>
884 </indexterm>
885 </listitem>
886 </varlistentry>
887
888 <varlistentry id="jstatd">
889 <term><command>jstatd</command></term>
890 <listitem>
891 <para>
892 is an RMI server application that monitors for the creation
893 and termination of instrumented JVMs
894 </para>
895 <indexterm zone="openjdk jstatd">
896 <primary sortas="b-jstatd">jstatd</primary>
897 </indexterm>
898 </listitem>
899 </varlistentry>
900
901 <varlistentry id="jwebserver">
902 <term><command>jwebserver</command></term>
903 <listitem>
904 <para>
905 provides a minimal HTTP server, designed to be used for
906 prototyping, testing, and debugging
907 </para>
908 <indexterm zone="openjdk jwebserver">
909 <primary sortas="b-jwebserver">jwebserver</primary>
910 </indexterm>
911 </listitem>
912 </varlistentry>
913
914 <varlistentry id="keytool">
915 <term><command>keytool</command></term>
916 <listitem>
917 <para>
918 is a key and certificate management utility
919 </para>
920 <indexterm zone="openjdk keytool">
921 <primary sortas="b-keytool">keytool</primary>
922 </indexterm>
923 </listitem>
924 </varlistentry>
925 <!--
926 <varlistentry id="pack200">
927 <term><command>pack200</command></term>
928 <listitem>
929 <para>
930 is a Java application that transforms a jar file into a
931 compressed pack200 file using the Java gzip compressor.
932 </para>
933 <indexterm zone="openjdk pack200">
934 <primary sortas="b-pack200">pack200</primary>
935 </indexterm>
936 </listitem>
937 </varlistentry>
938
939 <varlistentry id="rmic">
940 <term><command>rmic</command></term>
941 <listitem>
942 <para>
943 generates stub and skeleton class files for remote objects
944 from the names of compiled Java classes that contain remote
945 object implementations.
946 </para>
947 <indexterm zone="openjdk rmic">
948 <primary sortas="b-rmic">rmic</primary>
949 </indexterm>
950 </listitem>
951 </varlistentry>
952 -->
953<!-- Not seen in 17.0.1
954 <varlistentry id="rmid">
955 <term><command>rmid</command></term>
956 <listitem>
957 <para>
958 starts the activation system daemon
959 </para>
960 <indexterm zone="openjdk rmid">
961 <primary sortas="b-rmid">rmid</primary>
962 </indexterm>
963 </listitem>
964 </varlistentry>
965-->
966
967 <varlistentry id="rmiregistry">
968 <term><command>rmiregistry</command></term>
969 <listitem>
970 <para>
971 creates and starts a remote object registry on the specified
972 port on the current host
973 </para>
974 <indexterm zone="openjdk rmiregistry">
975 <primary sortas="b-rmiregistry">rmiregistry</primary>
976 </indexterm>
977 </listitem>
978 </varlistentry>
979
980 <varlistentry id="serialver">
981 <term><command>serialver</command></term>
982 <listitem>
983 <para>
984 returns the serialVersionUID for one or more classes in a
985 form suitable for copying into an evolving class
986 </para>
987 <indexterm zone="openjdk serialver">
988 <primary sortas="b-serialver">serialver</primary>
989 </indexterm>
990 </listitem>
991 </varlistentry>
992 <!--
993 <varlistentry id="unpack200">
994 <term><command>unpack200</command></term>
995 <listitem>
996 <para>
997 is a native implementation that transforms a packed file
998 produced by <application>pack200</application> into a jar
999 file.
1000 </para>
1001 <indexterm zone="openjdk unpack200">
1002 <primary sortas="b-unpack200">unpack200</primary>
1003 </indexterm>
1004 </listitem>
1005 </varlistentry>
1006 -->
1007 </variablelist>
1008
1009 </sect2>
1010
1011</sect1>
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