source: general/prog/openjdk.xml@ b1a8c0e8

12.0 12.1 gimp3 ken/TL2024 ken/tuningfonts lazarus plabs/newcss python3.11 rahul/power-profiles-daemon renodr/vulkan-addition trunk xry111/for-12.3 xry111/llvm18 xry111/spidermonkey128 xry111/xf86-video-removal
Last change on this file since b1a8c0e8 was dde26e3, checked in by Douglas R. Reno <renodr@…>, 14 months ago

Update to OpenJDK-20.0.1

  • Property mode set to 100644
File size: 33.6 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/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 "2a85b13d3d6ef6abfe8d7775481b89a9">
14 <!ENTITY ojdk-size "104 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 "3.5 GB (add 789 MB for tests)">
22 <!ENTITY ojdk-time "6.1 SBU with 4 jobs (add 40 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 &lfs113_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="lcms2"/>,
185 <xref linkend="libjpeg"/>,
186 <xref linkend="libpng"/>, and
187 <xref linkend="wget"/>
188 </para>
189
190 <bridgehead renderas="sect4">Optional</bridgehead>
191 <para role="optional">
192 <xref linkend="git"/>,
193 <xref linkend="graphviz"/>,
194 <xref linkend="mercurial"/>,
195<!-- not needed now, it seems
196 an X Window manager such as <xref linkend="twm"/> (for the tests), and
197-->
198 <ulink url="https://ccache.dev/">ccache</ulink>,
199 <ulink url="https://pandoc.org/">pandoc</ulink>, and
200 <ulink url="https://zlib.net/pigz">pigz</ulink>
201 </para>
202
203
204 </sect2>
205
206 <sect2 role="installation">
207 <title>Installation of OpenJDK</title>
208
209 <para>
210 If you have downloaded the optional test harness, unpack it now:
211 </para>
212
213<screen><userinput>tar -xf ../jtreg-&jtreg-version;.tar.gz</userinput></screen>
214<!--
215 <para>
216 Apply a patch to allow building with make-4.3:
217 </para>
218
219<screen><userinput>patch -p1 -i ../openjdk-&openjdk-version;-make_4.3_fix-1.patch</userinput></screen>
220
221 <para>
222 Fix an issue coming from a removed header in glibc-2.32:
223 </para>
224
225<screen><userinput>sed -i /sysctl/d \
226 src/jdk.incubator.jpackage/unix/native/libapplauncher/PosixPlatform.cpp</userinput></screen>
227-->
228 <note>
229 <para>
230 Before proceeding, you should ensure that your environment
231 <envar>PATH</envar> variable contains the location of the Java
232 compiler used for bootstrapping <application>OpenJDK</application>.
233 This is the only requirement for the environment. Modern Java
234 installations do not need <envar>JAVA_HOME</envar> and
235 <envar>CLASSPATH</envar> is not used here. Furthermore, OpenJDK
236 developers recommend unsetting <envar>JAVA_HOME</envar>.
237 </para>
238
239 <para>
240 The build system does not allow the <option>-j</option> switch in
241 <envar>MAKEFLAGS</envar>. See the command explanation for
242 <option>--with-jobs=</option>
243 for more information on customizing parallelization.
244 </para>
245 </note>
246
247 <para>
248 Configure and build the package with the following commands:
249 </para>
250
251<screen><userinput>unset JAVA_HOME &amp;&amp;
252bash configure --enable-unlimited-crypto \
253 --disable-warnings-as-errors \
254 --with-stdc++lib=dynamic \
255 --with-giflib=system \
256 --with-jtreg=$PWD/jtreg \
257 --with-lcms=system \
258 --with-libjpeg=system \
259 --with-libpng=system \
260 --with-zlib=system \
261 --with-version-build="&openjdk-build;" \
262 --with-version-pre="" \
263 --with-version-opt="" \
264 --with-cacerts-file=/etc/pki/tls/java/cacerts &amp;&amp;
265make images</userinput></screen>
266
267 <para>
268 To test the results, you will need to execute the jtreg program.
269 You can set the number of concurrent tests by adding the
270 <parameter>-conc:<replaceable>&lt;X&gt;</replaceable></parameter>
271 value in the below command (tests will run sequentially otherwise):
272 </para>
273
274<screen remap="test"><userinput>export JT_JAVA=$(echo $PWD/build/*/jdk) &amp;&amp;
275jtreg/bin/jtreg -jdk:$JT_JAVA -automatic -ignore:quiet -v1 \
276 test/jdk:tier1 test/langtools:tier1 &amp;&amp;
277unset JT_JAVA</userinput></screen>
278
279 <para>
280 For more control over the test suite, review the documentation
281 available in <filename>jtreg/doc/jtreg/usage.txt</filename>. To review
282 the results, see the files
283 <filename>JTreport/test_{jdk,langtools}/text/stats.txt</filename> and
284 <filename>JTreport/test_{jdk,langtools}/text/summary.txt</filename>.
285 You should expect to see around 60 failures and 10 errors.
286 </para>
287 <!--
288 14.0.1+7:
289 for x86_64: passed: 5,836; failed: 42; error: 50
290 17.0.2+8:
291 for x86_64: passed: 6,238; failed: 48; error: 13
292 for i686: passed: 6,208; failed: 29; error: 6
293 18.0.1+10:
294 for x86_64: passed: 6,323; failed: 53; error: 14
295 for i686: passed: 6,290; failed: 29; error: 11
296 18.0.1.1+2:
297 for x86_64: passed: 6,323; failed: 53; error: 14
298 for i686: passed: 6,290; failed: 29; error: 11
299 18.0.2+8:
300 for x86_64: passed: 6,329; failed: 50; error: 14
301 for i686: passed: 6,289; failed: 31; error: 13
302 19.0.1+10:
303 for x86_64: passed: 6,423; failed: 58; error: 15
304 for i686: passed: 6,376; failed: 31; error: 12
305 19.0.2+7:
306 for x86_64: passed: 6,426; failed: 61; error: 14
307 for i686: passed: 6,377; failed: 34; error: 11
308 20.0.1+9:
309 for x86_64: passed: 6,515; failed: 65; error: 13
310 for i686: passed: 6,520; failed: 60; error: 13
311 -->
312
313 <para>
314 Install the package with the following commands as the
315 <systemitem class="username">root</systemitem> user:
316 </para>
317
318<screen role="root"><userinput>install -vdm755 /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
319cp -Rv build/*/images/jdk/* /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
320chown -R root:root /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
321for s in 16 24 32 48; do
322 install -vDm644 src/java.desktop/unix/classes/sun/awt/X11/java-icon${s}.png \
323 /usr/share/icons/hicolor/${s}x${s}/apps/java.png
324done</userinput></screen>
325
326 <note>
327 <para>
328 If you only wish to install the Java Runtime Environment, you can
329 substitute <filename>build/*/images/jre</filename> in the above
330 <command>cp</command> command.
331 </para>
332 </note>
333
334 <para>
335 There are now two <application>OpenJDK</application> SDKs installed
336 in <filename class="directory">/opt</filename>. You should decide on
337 which one you would like to use as the default. Normally, you would opt
338 for the just installed <application>OpenJDK</application>. If so, do
339 the following as the <systemitem class="username">root</systemitem>
340 user:
341 </para>
342
343<screen role="root"><userinput>ln -v -nsf jdk-&openjdk-version;+&openjdk-build; /opt/jdk</userinput></screen>
344
345 <para>
346 If desired, you can create .desktop files to add entries
347 in the menu for <command>java</command>
348 and <command>jconsole</command>. The needed icons have already been
349 installed. As the <systemitem class="username">root</systemitem> user:
350 </para>
351
352<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
353
354cat &gt; /usr/share/applications/openjdk-java.desktop &lt;&lt; "EOF" &amp;&amp;
355<literal>[Desktop Entry]
356Name=OpenJDK Java &openjdk-version; Runtime
357Comment=OpenJDK Java &openjdk-version; Runtime
358Exec=/opt/jdk/bin/java -jar
359Terminal=false
360Type=Application
361Icon=java
362MimeType=application/x-java-archive;application/java-archive;application/x-jar;
363NoDisplay=true</literal>
364EOF
365cat &gt; /usr/share/applications/openjdk-jconsole.desktop &lt;&lt; "EOF"
366<literal>[Desktop Entry]
367Name=OpenJDK Java &openjdk-version; Console
368Comment=OpenJDK Java &openjdk-version; Console
369Keywords=java;console;monitoring
370Exec=/opt/jdk/bin/jconsole
371Terminal=false
372Type=Application
373Icon=java
374Categories=Application;System;</literal>
375EOF</userinput></screen>
376
377 </sect2>
378
379 <sect2 role="commands">
380 <title>Command Explanations</title>
381
382 <para>
383 <command>bash configure...</command>: the top level
384 <filename>configure</filename> is a wrapper around the autotools one.
385 It is not executable and must be run through <command>bash</command>.
386 </para>
387<!-- Not needed in openjdk-15
388 <para>
389 <parameter>- -with-extra-cflags=-fcommon</parameter>: Allows building
390 with GCC 10.
391 </para>
392-->
393 <para>
394 <parameter>--enable-unlimited-crypto</parameter>: Because of limitations
395 on the usage of cryptography in some countries, there is the possibility
396 to limit the size of encryption keys and the use of some algorithms in a
397 policy file. This switch allows to ship a policy file with no
398 restriction. It is the responsibility of the user to ensure proper
399 adherence to the law.
400 </para>
401
402 <para>
403 <parameter>--disable-warnings-as-errors</parameter>: This switch disables
404 use of <envar>-Werror</envar> in the build.
405 </para>
406
407 <para>
408 <parameter>--with-stdc++lib=dynamic</parameter>: This switch forces the
409 build system to link to <filename>libstdc++.so</filename> (dynamic)
410 instead of <filename>libstdc++.a</filename> (static).
411 </para>
412
413 <para>
414 <option>--with-jobs=<replaceable>&lt;X&gt;</replaceable></option>:
415 The <parameter>-j</parameter> passed to make does not work with make as
416 invoked here. By default, the build system will use the number of
417 CPUs - 1.
418 </para>
419
420 <para>
421 <parameter>--with-jtreg=$PWD/jtreg</parameter>: This switch tells
422 configure where to find jtreg. Omit if you have not downloaded the
423 optional test suite.
424 </para>
425
426 <para>
427 <parameter>--with-{giflib,lcms,libjpeg,libpng,zlib}=system</parameter>:
428 These switches force the build system to use the system libraries instead
429 of the bundled versions.
430 </para>
431
432 <para>
433 <parameter>--with-version-build</parameter>: Currently, the build
434 system does not include the build number in the version string. It has
435 to be specified here.
436 </para>
437
438 <para>
439 <parameter>--with-version-pre</parameter>: This switch allows you to
440 prefix the version string with a custom string.
441 </para>
442
443 <para>
444 <parameter>--with-version-opt</parameter>: This switch allows you to add
445 an optional build description to the version string.
446 </para>
447
448 <para>
449 <parameter>--with-cacerts-file=/etc/pki/tls/java/cacerts</parameter>:
450 Specifies where to find a <filename>cacerts</filename> file,
451 <filename>/etc/pki/tls/java/</filename> on a BLFS system. Otherwise, an
452 empty one is created. You can use the
453 <command>/usr/sbin/make-ca --force</command> command to generate it, once
454 you have installed the Java binaries.
455 </para>
456
457 <para>
458 <option>--with-boot-jdk</option>: This switch provides the
459 location of the temporary <application>JDK</application>. It is normally
460 not needed if <command>java</command> is found in the <envar>PATH</envar>.
461 </para>
462<!-- Seems to have disappeared
463 <para>
464 <command>find ... -iname '*.diz' -delete</command>: This command
465 removes redundant files.
466 </para>
467-->
468 </sect2>
469
470 <sect2 role="configuration"
471 id="openjdk-config"
472 xreflabel="Configuring OpenJDK">
473 <title>Configuring OpenJDK</title>
474
475 <sect3>
476 <title>Configuration Information</title>
477
478 <para>
479 Normally, the JAVA environment has been configured after installing
480 the binary version, and can be used with the just built package as well.
481 Review <xref linkend="ojdk-conf"/> in case you want to modify
482 something.
483 </para>
484
485 <para>
486 To test if the man pages are correctly installed, issue
487 <command>source /etc/profile</command> and <command>man java</command>
488 to display the respective man page.
489 </para>
490
491 </sect3>
492
493 <sect3>
494 <title>
495 Setting up the JRE Certificate Authority Certificates (cacerts) file
496 </title>
497
498 <para>
499 If you have run the instructions on the <xref linkend="make-ca"/> page,
500 you only need to create a symlink in the default location for the
501 <filename>cacerts</filename> file. As user <systemitem
502 class="username">root</systemitem>:
503 </para>
504
505<screen role="root"><userinput>ln -sfv /etc/pki/tls/java/cacerts /opt/jdk/lib/security/cacerts</userinput></screen>
506
507 <para>
508 To check the installation, issue:
509 </para>
510
511<screen role="root"><userinput>cd /opt/jdk
512bin/keytool -list -cacerts</userinput></screen>
513
514 <para>
515 At the prompt <computeroutput>Enter keystore password:</computeroutput>,
516 enter <userinput>changeit</userinput> (the default) or just press the
517 <quote>Enter</quote> key. If the <filename>cacerts</filename> file was
518 installed correctly, you will see a list of the certificates with
519 related information for each one. If not, you need to reinstall them.
520 </para>
521
522 </sect3>
523
524 </sect2>
525
526 <sect2 role="content">
527 <title>Contents</title>
528
529 <segmentedlist>
530 <segtitle>Installed Programs</segtitle>
531 <segtitle>Installed Libraries</segtitle>
532 <segtitle>Installed Directory</segtitle>
533
534 <seglistitem>
535 <seg>jar, jarsigner, java, javac, javadoc, javap, jcmd,
536 jconsole, jdb, jdeprscan, jdeps, jfr, jhsdb, jimage, jinfo,
537 jlink, jmap, jmod, jpackage, jps, jrunscript, jshell, jstack,
538 jstat, jstatd, jwebserver, keytool, rmiregistry, and serialver</seg>
539 <seg>/opt/jdk-&openjdk-version;/lib/*</seg>
540 <seg>/opt/jdk-&openjdk-version;</seg>
541 </seglistitem>
542 </segmentedlist>
543
544 <variablelist>
545 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
546 <?dbfo list-presentation="list"?>
547 <?dbhtml list-presentation="table"?>
548
549<!-- Not seen in 17.0.1
550 <varlistentry id="jaotc">
551 <term><command>jaotc</command></term>
552 <listitem>
553 <para>
554 is an <quote>ahead-of-time</quote> java class compiler
555 </para>
556 <indexterm zone="openjdk jaotc">
557 <primary sortas="b-jaotc">jaotc</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561-->
562
563 <varlistentry id="jar">
564 <term><command>jar</command></term>
565 <listitem>
566 <para>
567 combines multiple files into a single jar archive
568 </para>
569 <indexterm zone="openjdk jar">
570 <primary sortas="b-jar">jar</primary>
571 </indexterm>
572 </listitem>
573 </varlistentry>
574
575 <varlistentry id="jarsigner">
576 <term><command>jarsigner</command></term>
577 <listitem>
578 <para>
579 signs jar files and verifies the signatures and integrity
580 of a signed jar file
581 </para>
582 <indexterm zone="openjdk jarsigner">
583 <primary sortas="b-jarsigner">jarsigner</primary>
584 </indexterm>
585 </listitem>
586 </varlistentry>
587
588 <varlistentry id="java-prog">
589 <term><command>java</command></term>
590 <listitem>
591 <para>
592 launches a Java application by starting a Java runtime
593 environment, loading a specified class and invoking its main
594 method
595 </para>
596 <indexterm zone="openjdk java-prog">
597 <primary sortas="b-java-prog">java</primary>
598 </indexterm>
599 </listitem>
600 </varlistentry>
601
602 <varlistentry id="javac">
603 <term><command>javac</command></term>
604 <listitem>
605 <para>
606 reads class and interface definitions, written in the
607 Java programming language, and compiles them into bytecode
608 class files
609 </para>
610 <indexterm zone="openjdk javac">
611 <primary sortas="b-javac">javac</primary>
612 </indexterm>
613 </listitem>
614 </varlistentry>
615
616 <varlistentry id="javadoc">
617 <term><command>javadoc</command></term>
618 <listitem>
619 <para>
620 parses the declarations and documentation comments in a
621 set of Java source files and produces a corresponding set of
622 HTML pages describing the classes, interfaces, constructors,
623 methods, and fields
624 </para>
625 <indexterm zone="openjdk javadoc">
626 <primary sortas="b-javadoc">javadoc</primary>
627 </indexterm>
628 </listitem>
629 </varlistentry>
630
631 <varlistentry id="javap">
632 <term><command>javap</command></term>
633 <listitem>
634 <para>
635 disassembles a Java class file
636 </para>
637 <indexterm zone="openjdk javap">
638 <primary sortas="b-javap">javap</primary>
639 </indexterm>
640 </listitem>
641 </varlistentry>
642
643 <varlistentry id="jcmd">
644 <term><command>jcmd</command></term>
645 <listitem>
646 <para>
647 is a utility to send diagnostic command requests to a running
648 Java Virtual Machine
649 </para>
650 <indexterm zone="openjdk jcmd">
651 <primary sortas="b-jcmd">jcmd</primary>
652 </indexterm>
653 </listitem>
654 </varlistentry>
655
656 <varlistentry id="jconsole">
657 <term><command>jconsole</command></term>
658 <listitem>
659 <para>
660 is a graphical console tool to monitor and manage both
661 local and remote Java applications and virtual machines
662 </para>
663 <indexterm zone="openjdk jconsole">
664 <primary sortas="b-jconsole">jconsole</primary>
665 </indexterm>
666 </listitem>
667 </varlistentry>
668
669 <varlistentry id="jdb">
670 <term><command>jdb</command></term>
671 <listitem>
672 <para>
673 is a simple command-line debugger for Java classes
674 </para>
675 <indexterm zone="openjdk jdb">
676 <primary sortas="b-jdb">jdb</primary>
677 </indexterm>
678 </listitem>
679 </varlistentry>
680
681 <varlistentry id="jdeprscan">
682 <term><command>jdeprscan</command></term>
683 <listitem>
684 <para>
685 scans class or jar files for uses of deprecated API elements
686 </para>
687 <indexterm zone="openjdk jdeprscan">
688 <primary sortas="b-jdeprscan">jdeprscan</primary>
689 </indexterm>
690 </listitem>
691 </varlistentry>
692
693 <varlistentry id="jdeps">
694 <term><command>jdeps</command></term>
695 <listitem>
696 <para>
697 shows the package-level or class-level dependencies of
698 Java class files
699 </para>
700 <indexterm zone="openjdk jdeps">
701 <primary sortas="b-jdeps">jdeps</primary>
702 </indexterm>
703 </listitem>
704 </varlistentry>
705
706 <varlistentry id="jfr">
707 <term><command>jfr</command></term>
708 <listitem>
709 <para>
710 is a tool for working with <quote>Flight Recorder</quote> files
711 </para>
712 <indexterm zone="openjdk jfr">
713 <primary sortas="b-jfr">jfr</primary>
714 </indexterm>
715 </listitem>
716 </varlistentry>
717
718 <varlistentry id="jhsdb">
719 <term><command>jhsdb</command></term>
720 <listitem>
721 <para>
722 is a tool to analyze the content of a core dump from a
723 crashed Java Virtual Machine (JVM)
724 </para>
725 <indexterm zone="openjdk jhsdb">
726 <primary sortas="b-jhsdb">jhsdb</primary>
727 </indexterm>
728 </listitem>
729 </varlistentry>
730
731 <varlistentry id="jimage">
732 <term><command>jimage</command></term>
733 <listitem>
734 <para>
735 is used to list, extract, verify, or get information about
736 modules in <emphasis>jimage</emphasis> format
737 </para>
738 <indexterm zone="openjdk jimage">
739 <primary sortas="b-jimage">jimage</primary>
740 </indexterm>
741 </listitem>
742 </varlistentry>
743
744 <varlistentry id="jinfo">
745 <term><command>jinfo</command></term>
746 <listitem>
747 <para>
748 prints Java configuration information for a given Java
749 process, core file, or a remote debug server
750 </para>
751 <indexterm zone="openjdk jinfo">
752 <primary sortas="b-jinfo">jinfo</primary>
753 </indexterm>
754 </listitem>
755 </varlistentry>
756<!--
757 <varlistentry id="jjs">
758 <term><command>jjs</command></term>
759 <listitem>
760 <para>
761 is a command-line tool used to invoke the Nashorn engine. It
762 can be used to interpret one or several script files, or to run
763 an interactive shell.
764 </para>
765 <indexterm zone="openjdk jjs">
766 <primary sortas="b-jjs">jjs</primary>
767 </indexterm>
768 </listitem>
769 </varlistentry>
770-->
771 <varlistentry id="jlink">
772 <term><command>jlink</command></term>
773 <listitem>
774 <para>
775 is used to assemble and optimize a set of modules and their
776 dependencies into a custom runtime image
777 </para>
778 <indexterm zone="openjdk jlink">
779 <primary sortas="b-jlink">jlink</primary>
780 </indexterm>
781 </listitem>
782 </varlistentry>
783
784 <varlistentry id="jmap">
785 <term><command>jmap</command></term>
786 <listitem>
787 <para>
788 prints shared object memory maps or heap memory details
789 of a given process, core file, or a remote debug server
790 </para>
791 <indexterm zone="openjdk jmap">
792 <primary sortas="b-jmap">jmap</primary>
793 </indexterm>
794 </listitem>
795 </varlistentry>
796
797 <varlistentry id="jmod">
798 <term><command>jmod</command></term>
799 <listitem>
800 <para>
801 creates JMOD files and lists the content of existing JMOD files
802 </para>
803 <indexterm zone="openjdk jmod">
804 <primary sortas="b-jmod">jmod</primary>
805 </indexterm>
806 </listitem>
807 </varlistentry>
808
809 <varlistentry id="jpackage">
810 <term><command>jpackage</command></term>
811 <listitem>
812 <para>
813 generates java application packages and images
814 </para>
815 <indexterm zone="openjdk jpackage">
816 <primary sortas="b-jpackage">jpackage</primary>
817 </indexterm>
818 </listitem>
819 </varlistentry>
820
821 <varlistentry id="jps">
822 <term><command>jps</command></term>
823 <listitem>
824 <para>
825 lists the instrumented JVMs on the target system
826 </para>
827 <indexterm zone="openjdk jps">
828 <primary sortas="b-jps">jps</primary>
829 </indexterm>
830 </listitem>
831 </varlistentry>
832
833 <varlistentry id="jrunscript">
834 <term><command>jrunscript</command></term>
835 <listitem>
836 <para>
837 is a command line script shell
838 </para>
839 <indexterm zone="openjdk jrunscript">
840 <primary sortas="b-jrunscript">jrunscript</primary>
841 </indexterm>
842 </listitem>
843 </varlistentry>
844
845 <varlistentry id="jshell">
846 <term><command>jshell</command></term>
847 <listitem>
848 <para>
849 is an interactive tool for learning the Java programming
850 language and prototyping Java code
851 </para>
852 <indexterm zone="openjdk jshell">
853 <primary sortas="b-jshell">jshell</primary>
854 </indexterm>
855 </listitem>
856 </varlistentry>
857
858 <varlistentry id="jstack">
859 <term><command>jstack</command></term>
860 <listitem>
861 <para>
862 prints Java stack traces of Java threads for a given
863 Java process, core file, or a remote debug server
864 </para>
865 <indexterm zone="openjdk jstack">
866 <primary sortas="b-jstack">jstack</primary>
867 </indexterm>
868 </listitem>
869 </varlistentry>
870
871 <varlistentry id="jstat">
872 <term><command>jstat</command></term>
873 <listitem>
874 <para>
875 displays performance statistics for an instrumented JVM
876 </para>
877 <indexterm zone="openjdk jstat">
878 <primary sortas="b-jstat">jstat</primary>
879 </indexterm>
880 </listitem>
881 </varlistentry>
882
883 <varlistentry id="jstatd">
884 <term><command>jstatd</command></term>
885 <listitem>
886 <para>
887 is an RMI server application that monitors for the creation
888 and termination of instrumented JVMs
889 </para>
890 <indexterm zone="openjdk jstatd">
891 <primary sortas="b-jstatd">jstatd</primary>
892 </indexterm>
893 </listitem>
894 </varlistentry>
895
896 <varlistentry id="jwebserver">
897 <term><command>jwebserver</command></term>
898 <listitem>
899 <para>
900 provides a minimal HTTP server, designed to be used for
901 prototyping, testing, and debugging
902 </para>
903 <indexterm zone="openjdk jwebserver">
904 <primary sortas="b-jwebserver">jwebserver</primary>
905 </indexterm>
906 </listitem>
907 </varlistentry>
908
909 <varlistentry id="keytool">
910 <term><command>keytool</command></term>
911 <listitem>
912 <para>
913 is a key and certificate management utility
914 </para>
915 <indexterm zone="openjdk keytool">
916 <primary sortas="b-keytool">keytool</primary>
917 </indexterm>
918 </listitem>
919 </varlistentry>
920 <!--
921 <varlistentry id="pack200">
922 <term><command>pack200</command></term>
923 <listitem>
924 <para>
925 is a Java application that transforms a jar file into a
926 compressed pack200 file using the Java gzip compressor.
927 </para>
928 <indexterm zone="openjdk pack200">
929 <primary sortas="b-pack200">pack200</primary>
930 </indexterm>
931 </listitem>
932 </varlistentry>
933
934 <varlistentry id="rmic">
935 <term><command>rmic</command></term>
936 <listitem>
937 <para>
938 generates stub and skeleton class files for remote objects
939 from the names of compiled Java classes that contain remote
940 object implementations.
941 </para>
942 <indexterm zone="openjdk rmic">
943 <primary sortas="b-rmic">rmic</primary>
944 </indexterm>
945 </listitem>
946 </varlistentry>
947 -->
948<!-- Not seen in 17.0.1
949 <varlistentry id="rmid">
950 <term><command>rmid</command></term>
951 <listitem>
952 <para>
953 starts the activation system daemon
954 </para>
955 <indexterm zone="openjdk rmid">
956 <primary sortas="b-rmid">rmid</primary>
957 </indexterm>
958 </listitem>
959 </varlistentry>
960-->
961
962 <varlistentry id="rmiregistry">
963 <term><command>rmiregistry</command></term>
964 <listitem>
965 <para>
966 creates and starts a remote object registry on the specified
967 port on the current host
968 </para>
969 <indexterm zone="openjdk rmiregistry">
970 <primary sortas="b-rmiregistry">rmiregistry</primary>
971 </indexterm>
972 </listitem>
973 </varlistentry>
974
975 <varlistentry id="serialver">
976 <term><command>serialver</command></term>
977 <listitem>
978 <para>
979 returns the serialVersionUID for one or more classes in a
980 form suitable for copying into an evolving class
981 </para>
982 <indexterm zone="openjdk serialver">
983 <primary sortas="b-serialver">serialver</primary>
984 </indexterm>
985 </listitem>
986 </varlistentry>
987 <!--
988 <varlistentry id="unpack200">
989 <term><command>unpack200</command></term>
990 <listitem>
991 <para>
992 is a native implementation that transforms a packed file
993 produced by <application>pack200</application> into a jar
994 file.
995 </para>
996 <indexterm zone="openjdk unpack200">
997 <primary sortas="b-unpack200">unpack200</primary>
998 </indexterm>
999 </listitem>
1000 </varlistentry>
1001 -->
1002 </variablelist>
1003
1004 </sect2>
1005
1006</sect1>
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