source: general/prog/openjdk.xml@ cede1f0

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Last change on this file since cede1f0 was 3f2db3a6, checked in by Pierre Labastie <pierre.labastie@…>, 18 months ago

Remove sect1info tags

They only contain a date tag that is nowhere used.

  • Property mode set to 100644
File size: 33.5 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/jdk19u">
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 "e1067bc90894e5377b61dca68a22f07c">
14 <!ENTITY ojdk-size "103 MB">
15
16 <!ENTITY jtreg-version "6.1+1">
17 <!ENTITY jtreg-download "&anduin-download;/jtreg-&jtreg-version;.tar.gz">
18 <!ENTITY jtreg-md5sum "49e6bfa2506e96f461a01f9421a0961c">
19 <!ENTITY jtreg-size "8.0 MB">
20
21 <!ENTITY ojdk-bdsize "5.1 GB (add 596 MB for tests)">
22 <!ENTITY ojdk-time "5.0 SBU with 4 jobs (add 48 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 &lfs112_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--> <ulink url="https://pandoc.org/">pandoc</ulink>, and
198 <ulink url="https://zlib.net/pigz">pigz</ulink>
199 </para>
200
201 <para condition="html" role="usernotes">User Notes:
202 <ulink url="&blfs-wiki;/openjdk"/></para>
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 40 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 -->
306
307 <para>
308 Install the package with the following commands as the
309 <systemitem class="username">root</systemitem> user:
310 </para>
311
312<screen role="root"><userinput>install -vdm755 /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
313cp -Rv build/*/images/jdk/* /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
314chown -R root:root /opt/jdk-&openjdk-version;+&openjdk-build; &amp;&amp;
315for s in 16 24 32 48; do
316 install -vDm644 src/java.desktop/unix/classes/sun/awt/X11/java-icon${s}.png \
317 /usr/share/icons/hicolor/${s}x${s}/apps/java.png
318done</userinput></screen>
319
320 <note>
321 <para>
322 If you only wish to install the Java Runtime Environment, you can
323 substitute <filename>build/*/images/jre</filename> in the above
324 <command>cp</command> command.
325 </para>
326 </note>
327
328 <para>
329 There are now two <application>OpenJDK</application> SDKs installed
330 in <filename class="directory">/opt</filename>. You should decide on
331 which one you would like to use as the default. Normally, you would opt
332 for the just installed <application>OpenJDK</application>. If so, do
333 the following as the <systemitem class="username">root</systemitem>
334 user:
335 </para>
336
337<screen role="root"><userinput>ln -v -nsf jdk-&openjdk-version;+&openjdk-build; /opt/jdk</userinput></screen>
338
339 <para>
340 If desired, you can create .desktop files to add entries
341 in the menu for <command>java</command>
342 and <command>jconsole</command>. The needed icons have already been
343 installed. As the <systemitem class="username">root</systemitem> user:
344 </para>
345
346<screen role="root"><userinput>mkdir -pv /usr/share/applications &amp;&amp;
347
348cat &gt; /usr/share/applications/openjdk-java.desktop &lt;&lt; "EOF" &amp;&amp;
349<literal>[Desktop Entry]
350Name=OpenJDK Java &openjdk-version; Runtime
351Comment=OpenJDK Java &openjdk-version; Runtime
352Exec=/opt/jdk/bin/java -jar
353Terminal=false
354Type=Application
355Icon=java
356MimeType=application/x-java-archive;application/java-archive;application/x-jar;
357NoDisplay=true</literal>
358EOF
359cat &gt; /usr/share/applications/openjdk-jconsole.desktop &lt;&lt; "EOF"
360<literal>[Desktop Entry]
361Name=OpenJDK Java &openjdk-version; Console
362Comment=OpenJDK Java &openjdk-version; Console
363Keywords=java;console;monitoring
364Exec=/opt/jdk/bin/jconsole
365Terminal=false
366Type=Application
367Icon=java
368Categories=Application;System;</literal>
369EOF</userinput></screen>
370
371 </sect2>
372
373 <sect2 role="commands">
374 <title>Command Explanations</title>
375
376 <para>
377 <command>bash configure...</command>: the top level
378 <filename>configure</filename> is a wrapper around the autotools one.
379 It is not executable and must be run through <command>bash</command>.
380 </para>
381<!-- Not needed in openjdk-15
382 <para>
383 <parameter>- -with-extra-cflags=-fcommon</parameter>: Allows building
384 with GCC 10.
385 </para>
386-->
387 <para>
388 <parameter>--enable-unlimited-crypto</parameter>: Because of limitations
389 on the usage of cryptography in some countries, there is the possibility
390 to limit the size of encryption keys and the use of some algorithms in a
391 policy file. This switch allows to ship a policy file with no
392 restriction. It is the responsibility of the user to ensure proper
393 adherence to the law.
394 </para>
395
396 <para>
397 <parameter>--disable-warnings-as-errors</parameter>: This switch disables
398 use of <envar>-Werror</envar> in the build.
399 </para>
400
401 <para>
402 <parameter>--with-stdc++lib=dynamic</parameter>: This switch forces the
403 build system to link to <filename>libstdc++.so</filename> (dynamic)
404 instead of <filename>libstdc++.a</filename> (static).
405 </para>
406
407 <para>
408 <option>--with-jobs=<replaceable>&lt;X&gt;</replaceable></option>:
409 The <parameter>-j</parameter> passed to make does not work with make as
410 invoked here. By default, the build system will use the number of
411 CPUs - 1.
412 </para>
413
414 <para>
415 <parameter>--with-jtreg=$PWD/jtreg</parameter>: This switch tells
416 configure where to find jtreg. Omit if you have not downloaded the
417 optional test suite.
418 </para>
419
420 <para>
421 <parameter>--with-{giflib,lcms,libjpeg,libpng,zlib}=system</parameter>:
422 These switches force the build system to use the system libraries instead
423 of the bundled versions.
424 </para>
425
426 <para>
427 <parameter>--with-version-build</parameter>: Currently, the build
428 system does not include the build number in the version string. It has
429 to be specified here.
430 </para>
431
432 <para>
433 <parameter>--with-version-pre</parameter>: This switch allows you to
434 prefix the version string with a custom string.
435 </para>
436
437 <para>
438 <parameter>--with-version-opt</parameter>: This switch allows you to add
439 an optional build description to the version string.
440 </para>
441
442 <para>
443 <parameter>--with-cacerts-file=/etc/pki/tls/java/cacerts</parameter>:
444 Specifies where to find a <filename>cacerts</filename> file,
445 <filename>/etc/pki/tls/java/</filename> on a BLFS system. Otherwise, an
446 empty one is created. You can use the
447 <command>/usr/sbin/make-ca --force</command> command to generate it, once
448 you have installed the Java binaries.
449 </para>
450
451 <para>
452 <option>--with-boot-jdk</option>: This switch provides the
453 location of the temporary <application>JDK</application>. It is normally
454 not needed if <command>java</command> is found in the <envar>PATH</envar>.
455 </para>
456<!-- Seems to have disappeared
457 <para>
458 <command>find ... -iname '*.diz' -delete</command>: This command
459 removes redundant files.
460 </para>
461-->
462 </sect2>
463
464 <sect2 role="configuration"
465 id="openjdk-config"
466 xreflabel="Configuring OpenJDK">
467 <title>Configuring OpenJDK</title>
468
469 <sect3>
470 <title>Configuration Information</title>
471
472 <para>
473 Normally, the JAVA environment has been configured after installing
474 the binary version, and can be used with the just built package as well.
475 Review <xref linkend="ojdk-conf"/> in case you want to modify
476 something.
477 </para>
478
479 <para>
480 To test if the man pages are correctly installed, issue
481 <command>source /etc/profile</command> and <command>man java</command>
482 to display the respective man page.
483 </para>
484
485 </sect3>
486
487 <sect3>
488 <title>
489 Setting up the JRE Certificate Authority Certificates (cacerts) file
490 </title>
491
492 <para>
493 If you have run the instructions on the <xref linkend="make-ca"/> page,
494 you only need to create a symlink in the default location for the
495 <filename>cacerts</filename> file. As user <systemitem
496 class="username">root</systemitem>:
497 </para>
498
499<screen role="root"><userinput>ln -sfv /etc/pki/tls/java/cacerts /opt/jdk/lib/security/cacerts</userinput></screen>
500
501 <para>
502 To check the installation, issue:
503 </para>
504
505<screen role="root"><userinput>cd /opt/jdk
506bin/keytool -list -cacerts</userinput></screen>
507
508 <para>
509 At the prompt <computeroutput>Enter keystore password:</computeroutput>,
510 enter <userinput>changeit</userinput> (the default) or just press the
511 <quote>Enter</quote> key. If the <filename>cacerts</filename> file was
512 installed correctly, you will see a list of the certificates with
513 related information for each one. If not, you need to reinstall them.
514 </para>
515
516 </sect3>
517
518 </sect2>
519
520 <sect2 role="content">
521 <title>Contents</title>
522
523 <segmentedlist>
524 <segtitle>Installed Programs</segtitle>
525 <segtitle>Installed Libraries</segtitle>
526 <segtitle>Installed Directory</segtitle>
527
528 <seglistitem>
529 <seg>jar, jarsigner, java, javac, javadoc, javap, jcmd,
530 jconsole, jdb, jdeprscan, jdeps, jfr, jhsdb, jimage, jinfo,
531 jlink, jmap, jmod, jpackage, jps, jrunscript, jshell, jstack,
532 jstat, jstatd, jwebserver, keytool, rmiregistry, and serialver</seg>
533 <seg>/opt/jdk-&openjdk-version;/lib/*</seg>
534 <seg>/opt/jdk-&openjdk-version;</seg>
535 </seglistitem>
536 </segmentedlist>
537
538 <variablelist>
539 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
540 <?dbfo list-presentation="list"?>
541 <?dbhtml list-presentation="table"?>
542
543<!-- Not seen in 17.0.1
544 <varlistentry id="jaotc">
545 <term><command>jaotc</command></term>
546 <listitem>
547 <para>
548 is an <quote>ahead-of-time</quote> java class compiler
549 </para>
550 <indexterm zone="openjdk jaotc">
551 <primary sortas="b-jaotc">jaotc</primary>
552 </indexterm>
553 </listitem>
554 </varlistentry>
555-->
556
557 <varlistentry id="jar">
558 <term><command>jar</command></term>
559 <listitem>
560 <para>
561 combines multiple files into a single jar archive
562 </para>
563 <indexterm zone="openjdk jar">
564 <primary sortas="b-jar">jar</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="jarsigner">
570 <term><command>jarsigner</command></term>
571 <listitem>
572 <para>
573 signs jar files and verifies the signatures and integrity
574 of a signed jar file
575 </para>
576 <indexterm zone="openjdk jarsigner">
577 <primary sortas="b-jarsigner">jarsigner</primary>
578 </indexterm>
579 </listitem>
580 </varlistentry>
581
582 <varlistentry id="java-prog">
583 <term><command>java</command></term>
584 <listitem>
585 <para>
586 launches a Java application by starting a Java runtime
587 environment, loading a specified class and invoking its main
588 method
589 </para>
590 <indexterm zone="openjdk java-prog">
591 <primary sortas="b-java-prog">java</primary>
592 </indexterm>
593 </listitem>
594 </varlistentry>
595
596 <varlistentry id="javac">
597 <term><command>javac</command></term>
598 <listitem>
599 <para>
600 reads class and interface definitions, written in the
601 Java programming language, and compiles them into bytecode
602 class files
603 </para>
604 <indexterm zone="openjdk javac">
605 <primary sortas="b-javac">javac</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="javadoc">
611 <term><command>javadoc</command></term>
612 <listitem>
613 <para>
614 parses the declarations and documentation comments in a
615 set of Java source files and produces a corresponding set of
616 HTML pages describing the classes, interfaces, constructors,
617 methods, and fields
618 </para>
619 <indexterm zone="openjdk javadoc">
620 <primary sortas="b-javadoc">javadoc</primary>
621 </indexterm>
622 </listitem>
623 </varlistentry>
624
625 <varlistentry id="javap">
626 <term><command>javap</command></term>
627 <listitem>
628 <para>
629 disassembles a Java class file
630 </para>
631 <indexterm zone="openjdk javap">
632 <primary sortas="b-javap">javap</primary>
633 </indexterm>
634 </listitem>
635 </varlistentry>
636
637 <varlistentry id="jcmd">
638 <term><command>jcmd</command></term>
639 <listitem>
640 <para>
641 is a utility to send diagnostic command requests to a running
642 Java Virtual Machine
643 </para>
644 <indexterm zone="openjdk jcmd">
645 <primary sortas="b-jcmd">jcmd</primary>
646 </indexterm>
647 </listitem>
648 </varlistentry>
649
650 <varlistentry id="jconsole">
651 <term><command>jconsole</command></term>
652 <listitem>
653 <para>
654 is a graphical console tool to monitor and manage both
655 local and remote Java applications and virtual machines
656 </para>
657 <indexterm zone="openjdk jconsole">
658 <primary sortas="b-jconsole">jconsole</primary>
659 </indexterm>
660 </listitem>
661 </varlistentry>
662
663 <varlistentry id="jdb">
664 <term><command>jdb</command></term>
665 <listitem>
666 <para>
667 is a simple command-line debugger for Java classes
668 </para>
669 <indexterm zone="openjdk jdb">
670 <primary sortas="b-jdb">jdb</primary>
671 </indexterm>
672 </listitem>
673 </varlistentry>
674
675 <varlistentry id="jdeprscan">
676 <term><command>jdeprscan</command></term>
677 <listitem>
678 <para>
679 scans class or jar files for uses of deprecated API elements
680 </para>
681 <indexterm zone="openjdk jdeprscan">
682 <primary sortas="b-jdeprscan">jdeprscan</primary>
683 </indexterm>
684 </listitem>
685 </varlistentry>
686
687 <varlistentry id="jdeps">
688 <term><command>jdeps</command></term>
689 <listitem>
690 <para>
691 shows the package-level or class-level dependencies of
692 Java class files
693 </para>
694 <indexterm zone="openjdk jdeps">
695 <primary sortas="b-jdeps">jdeps</primary>
696 </indexterm>
697 </listitem>
698 </varlistentry>
699
700 <varlistentry id="jfr">
701 <term><command>jfr</command></term>
702 <listitem>
703 <para>
704 is a tool for working with <quote>Flight Recorder</quote> files
705 </para>
706 <indexterm zone="openjdk jfr">
707 <primary sortas="b-jfr">jfr</primary>
708 </indexterm>
709 </listitem>
710 </varlistentry>
711
712 <varlistentry id="jhsdb">
713 <term><command>jhsdb</command></term>
714 <listitem>
715 <para>
716 is a tool to analyze the content of a core dump from a
717 crashed Java Virtual Machine (JVM)
718 </para>
719 <indexterm zone="openjdk jhsdb">
720 <primary sortas="b-jhsdb">jhsdb</primary>
721 </indexterm>
722 </listitem>
723 </varlistentry>
724
725 <varlistentry id="jimage">
726 <term><command>jimage</command></term>
727 <listitem>
728 <para>
729 is used to list, extract, verify, or get information about
730 modules in <emphasis>jimage</emphasis> format
731 </para>
732 <indexterm zone="openjdk jimage">
733 <primary sortas="b-jimage">jimage</primary>
734 </indexterm>
735 </listitem>
736 </varlistentry>
737
738 <varlistentry id="jinfo">
739 <term><command>jinfo</command></term>
740 <listitem>
741 <para>
742 prints Java configuration information for a given Java
743 process, core file, or a remote debug server
744 </para>
745 <indexterm zone="openjdk jinfo">
746 <primary sortas="b-jinfo">jinfo</primary>
747 </indexterm>
748 </listitem>
749 </varlistentry>
750<!--
751 <varlistentry id="jjs">
752 <term><command>jjs</command></term>
753 <listitem>
754 <para>
755 is a command-line tool used to invoke the Nashorn engine. It
756 can be used to interpret one or several script files, or to run
757 an interactive shell.
758 </para>
759 <indexterm zone="openjdk jjs">
760 <primary sortas="b-jjs">jjs</primary>
761 </indexterm>
762 </listitem>
763 </varlistentry>
764-->
765 <varlistentry id="jlink">
766 <term><command>jlink</command></term>
767 <listitem>
768 <para>
769 is used to assemble and optimize a set of modules and their
770 dependencies into a custom runtime image
771 </para>
772 <indexterm zone="openjdk jlink">
773 <primary sortas="b-jlink">jlink</primary>
774 </indexterm>
775 </listitem>
776 </varlistentry>
777
778 <varlistentry id="jmap">
779 <term><command>jmap</command></term>
780 <listitem>
781 <para>
782 prints shared object memory maps or heap memory details
783 of a given process, core file, or a remote debug server
784 </para>
785 <indexterm zone="openjdk jmap">
786 <primary sortas="b-jmap">jmap</primary>
787 </indexterm>
788 </listitem>
789 </varlistentry>
790
791 <varlistentry id="jmod">
792 <term><command>jmod</command></term>
793 <listitem>
794 <para>
795 creates JMOD files and lists the content of existing JMOD files
796 </para>
797 <indexterm zone="openjdk jmod">
798 <primary sortas="b-jmod">jmod</primary>
799 </indexterm>
800 </listitem>
801 </varlistentry>
802
803 <varlistentry id="jpackage">
804 <term><command>jpackage</command></term>
805 <listitem>
806 <para>
807 generates java application packages and images
808 </para>
809 <indexterm zone="openjdk jpackage">
810 <primary sortas="b-jpackage">jpackage</primary>
811 </indexterm>
812 </listitem>
813 </varlistentry>
814
815 <varlistentry id="jps">
816 <term><command>jps</command></term>
817 <listitem>
818 <para>
819 lists the instrumented JVMs on the target system
820 </para>
821 <indexterm zone="openjdk jps">
822 <primary sortas="b-jps">jps</primary>
823 </indexterm>
824 </listitem>
825 </varlistentry>
826
827 <varlistentry id="jrunscript">
828 <term><command>jrunscript</command></term>
829 <listitem>
830 <para>
831 is a command line script shell
832 </para>
833 <indexterm zone="openjdk jrunscript">
834 <primary sortas="b-jrunscript">jrunscript</primary>
835 </indexterm>
836 </listitem>
837 </varlistentry>
838
839 <varlistentry id="jshell">
840 <term><command>jshell</command></term>
841 <listitem>
842 <para>
843 is an interactive tool for learning the Java programming
844 language and prototyping Java code
845 </para>
846 <indexterm zone="openjdk jshell">
847 <primary sortas="b-jshell">jshell</primary>
848 </indexterm>
849 </listitem>
850 </varlistentry>
851
852 <varlistentry id="jstack">
853 <term><command>jstack</command></term>
854 <listitem>
855 <para>
856 prints Java stack traces of Java threads for a given
857 Java process, core file, or a remote debug server
858 </para>
859 <indexterm zone="openjdk jstack">
860 <primary sortas="b-jstack">jstack</primary>
861 </indexterm>
862 </listitem>
863 </varlistentry>
864
865 <varlistentry id="jstat">
866 <term><command>jstat</command></term>
867 <listitem>
868 <para>
869 displays performance statistics for an instrumented JVM
870 </para>
871 <indexterm zone="openjdk jstat">
872 <primary sortas="b-jstat">jstat</primary>
873 </indexterm>
874 </listitem>
875 </varlistentry>
876
877 <varlistentry id="jstatd">
878 <term><command>jstatd</command></term>
879 <listitem>
880 <para>
881 is an RMI server application that monitors for the creation
882 and termination of instrumented JVMs
883 </para>
884 <indexterm zone="openjdk jstatd">
885 <primary sortas="b-jstatd">jstatd</primary>
886 </indexterm>
887 </listitem>
888 </varlistentry>
889
890 <varlistentry id="jwebserver">
891 <term><command>jwebserver</command></term>
892 <listitem>
893 <para>
894 provides a minimal HTTP server, designed to be used for
895 prototyping, testing, and debugging
896 </para>
897 <indexterm zone="openjdk jwebserver">
898 <primary sortas="b-jwebserver">jwebserver</primary>
899 </indexterm>
900 </listitem>
901 </varlistentry>
902
903 <varlistentry id="keytool">
904 <term><command>keytool</command></term>
905 <listitem>
906 <para>
907 is a key and certificate management utility
908 </para>
909 <indexterm zone="openjdk keytool">
910 <primary sortas="b-keytool">keytool</primary>
911 </indexterm>
912 </listitem>
913 </varlistentry>
914 <!--
915 <varlistentry id="pack200">
916 <term><command>pack200</command></term>
917 <listitem>
918 <para>
919 is a Java application that transforms a jar file into a
920 compressed pack200 file using the Java gzip compressor.
921 </para>
922 <indexterm zone="openjdk pack200">
923 <primary sortas="b-pack200">pack200</primary>
924 </indexterm>
925 </listitem>
926 </varlistentry>
927
928 <varlistentry id="rmic">
929 <term><command>rmic</command></term>
930 <listitem>
931 <para>
932 generates stub and skeleton class files for remote objects
933 from the names of compiled Java classes that contain remote
934 object implementations.
935 </para>
936 <indexterm zone="openjdk rmic">
937 <primary sortas="b-rmic">rmic</primary>
938 </indexterm>
939 </listitem>
940 </varlistentry>
941 -->
942<!-- Not seen in 17.0.1
943 <varlistentry id="rmid">
944 <term><command>rmid</command></term>
945 <listitem>
946 <para>
947 starts the activation system daemon
948 </para>
949 <indexterm zone="openjdk rmid">
950 <primary sortas="b-rmid">rmid</primary>
951 </indexterm>
952 </listitem>
953 </varlistentry>
954-->
955
956 <varlistentry id="rmiregistry">
957 <term><command>rmiregistry</command></term>
958 <listitem>
959 <para>
960 creates and starts a remote object registry on the specified
961 port on the current host
962 </para>
963 <indexterm zone="openjdk rmiregistry">
964 <primary sortas="b-rmiregistry">rmiregistry</primary>
965 </indexterm>
966 </listitem>
967 </varlistentry>
968
969 <varlistentry id="serialver">
970 <term><command>serialver</command></term>
971 <listitem>
972 <para>
973 returns the serialVersionUID for one or more classes in a
974 form suitable for copying into an evolving class
975 </para>
976 <indexterm zone="openjdk serialver">
977 <primary sortas="b-serialver">serialver</primary>
978 </indexterm>
979 </listitem>
980 </varlistentry>
981 <!--
982 <varlistentry id="unpack200">
983 <term><command>unpack200</command></term>
984 <listitem>
985 <para>
986 is a native implementation that transforms a packed file
987 produced by <application>pack200</application> into a jar
988 file.
989 </para>
990 <indexterm zone="openjdk unpack200">
991 <primary sortas="b-unpack200">unpack200</primary>
992 </indexterm>
993 </listitem>
994 </varlistentry>
995 -->
996 </variablelist>
997
998 </sect2>
999
1000</sect1>
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