source: general/prog/java.xml@ 7ea4cb6

10.0 10.1 11.0 7.10 8.0 8.1 8.2 8.3 8.4 9.0 9.1 basic bdubbs/svn elogind ken/refactor-virt lazarus nosym perl-modules qt5new trunk upgradedb xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since 7ea4cb6 was 7ea4cb6, checked in by Pierre Labastie <pieere@…>, 6 years ago

OpenJDK-1.8.0.77

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@17198 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 5.8 KB
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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 anduin-download "&sources-anduin-http;/OpenJDK/OpenJDK-&openjdk-version;">
8 <!ENTITY openjdk-download-binary-x86 "&anduin-download;/OpenJDK-&openjdk-version;-i686-bin.tar.xz">
9 <!ENTITY openjdk-bin-md5sum-x86 "41f3f4f87573e92ca4ab0350f0ff0d2f">
10 <!ENTITY openjdk-bin-size-x86 "57 MB">
11 <!ENTITY openjdk-bin-buildsize-x86 "166 MB">
12
13 <!ENTITY openjdk-download-binary-x64 "&anduin-download;/OpenJDK-&openjdk-version;-x86_64-bin.tar.xz">
14 <!ENTITY openjdk-bin-md5sum-x64 "5a9b1b6d2e105eef2fbb1a965b17b3e9">
15 <!ENTITY openjdk-bin-size-x64 "58 MB">
16 <!ENTITY openjdk-bin-buildsize-x64 "169 MB">
17]>
18
19<sect1 id="java" xreflabel="Java-&openjdk-version;">
20 <?dbhtml filename="java.html"?>
21
22 <sect1info>
23 <othername>$LastChangedBy$</othername>
24 <date>$Date$</date>
25 </sect1info>
26
27 <title>Java-&openjdk-version;</title>
28
29 <indexterm zone="java">
30 <primary sortas="a-java">JDK Binary</primary>
31 </indexterm>
32
33
34 <sect2>
35 <title>About Java</title>
36 <para>Java is different from most of the packages in LFS and BLFS. It
37 is a programming language that works with files of byte codes to obtain
38 instructions and executes then in a Java Virtual Machine (JVM). An
39 introductory java program looks like:</para>
40
41<screen><literal>public class HelloWorld
42{
43 public static void main(String[] args)
44 {
45 System.out.println("Hello, World");
46 }
47}</literal></screen>
48
49 <para>This program is saved as <filename>HelloWorld.java</filename>. The
50 file name, <emphasis>HelloWorld</emphasis>, must match the class name. It
51 is then converted into byte code with
52 <command>javac HelloWorld.java</command>. The output file is
53 <filename>HelloWorld.class</filename>. The program is executed with
54 <command>java HelloWorld</command>. This creates a JVM and runs the
55 code. The 'class' extension must not be specified.</para>
56
57 <para>Several class files can be combined into one file with the
58 <command>jar</command> command. This is similar to the standard
59 <command>tar</command> command. For instance, the command
60 <command>jar cf myjar.jar *.class</command> will combine all class files
61 in a directory into one jar file. These act as library files.</para>
62
63 <para>The JVM can search for and use classes in jar files automatically.
64 It uses the <envar>CLASSPATH</envar> environment variable to search for
65 jar files. This is a standard list of colon-separated directory names
66 similar to the <envar>PATH</envar> environment variable.</para>
67
68 </sect2>
69
70 <sect2 id="java-bin" xreflabel="Java Binary" role="package">
71 <title>Binary JDK Information</title>
72
73 <para>Creating a JVM from source requires a set of circular dependencies.
74 The first thing that's needed is a set of programs called a Java Development
75 Kit (JDK). This set of programs includes <command>java</command>,
76 <command>javac</command>, <command>jar</command>, and several others. It
77 also includes several base <emphasis>jar</emphasis> files.</para>
78
79 <para>To start, we set up a binary installation of the JDK created
80 by the BLFS editors. It is installed in the <filename>/opt</filename>
81 directory to allow for multiple installations, including a source based
82 version.</para>
83
84 &lfs79_checked;
85
86 <bridgehead renderas="sect3">Binary Package Information</bridgehead>
87 <itemizedlist spacing="compact">
88 <listitem>
89 <para>Binary download (x86):
90 <ulink url="&openjdk-download-binary-x86;"/></para>
91 </listitem>
92 <listitem>
93 <para>Download MD5 sum: &openjdk-bin-md5sum-x86;</para>
94 </listitem>
95 <listitem>
96 <para>Download size (binary): &openjdk-bin-size-x86;</para>
97 </listitem>
98 <listitem>
99 <para>Estimated disk space required: &openjdk-bin-buildsize-x86;</para>
100 </listitem>
101 </itemizedlist>
102 <itemizedlist spacing="compact">
103 <listitem>
104 <para>Binary download (x86_64):
105 <ulink url="&openjdk-download-binary-x64;"/></para>
106 </listitem>
107 <listitem>
108 <para>Download MD5 sum: &openjdk-bin-md5sum-x64;</para>
109 </listitem>
110 <listitem>
111 <para>Download size (binary): &openjdk-bin-size-x64;</para>
112 </listitem>
113 <listitem>
114 <para>Estimated disk space required: &openjdk-bin-buildsize-x64;</para>
115 </listitem>
116 </itemizedlist>
117
118 <bridgehead renderas="sect3">Java Binary Runtime Dependencies</bridgehead>
119 <para role="required">
120 <xref linkend="alsa-lib"/>,
121 <xref linkend="cups"/>,
122 <xref linkend="giflib"/>, and
123 <xref linkend="xorg7-lib"/>
124 </para>
125
126 </sect2>
127
128 <sect2 role="installation">
129 <title>Installation of the Java BinaryJDK </title>
130 <para>Begin by extracting the appropriate binary tarball for your
131 architecture and changing to the extracted directory. Install the binary
132 <application>OpenJDK</application> with the following commands as the
133 <systemitem class="username">root</systemitem> user:</para>
134
135<screen role="root"><userinput>install -vdm755 /opt/OpenJDK-&openjdk-version;-bin &amp;&amp;
136mv -v * /opt/OpenJDK-&openjdk-version;-bin &amp;&amp;
137chown -R root:root /opt/OpenJDK-&openjdk-version;-bin</userinput></screen>
138
139 <para>
140 The binary version is now installed. You may create a symlink to that
141 version by issuing, as the <systemitem class="username">root</systemitem>
142 user:
143 </para>
144
145<screen role="root"><userinput>ln -sfn OpenJDK-&openjdk-version;-bin /opt/jdk</userinput></screen>
146
147 <para>
148 You may now proceed to <xref linkend="ojdk-conf"/>, where the
149 instructions assume that the above link exists.
150 </para>
151
152 </sect2>
153
154</sect1>
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