Arch Linux中Java SDK的安装与配置
因为版权和公司对开源软件的态度，Oracle Java SDK已经不再包含于Arch Linux默认的Repository。
不过对于有开发需要，又不得不使用Oracle公司的产品的民工们，还好有AUR中提供的相应支持，让我们能方便地用安装脚本来处理Oracle Java SDK的安装和配置。
下面就简单地记录下的JDK的安装方法。
安装环境如下：
Arch Linux 3.1.3
Oracle Java SDK 7 update 1
制作安装包
$ tar -zxvf jre.tar.gz
$ cd jre
$ makepkg
处理依赖条件，开始安装
$ sudo pacman -S desktop-file-utils libxtst shared-mime-info xdg-utils
$ sudo pacman -U ./jre-7u1-1-i686.pkg.tar.xz
resolving dependencies...
looking for inter-conflicts...
Targets (1): jre-7u1-1
Total Download Size: 0.00 MB
Total Installed Size: 91.42 MB
Proceed with installation? [Y/n]
(1/1) checking package integrity [######################] 100%
(1/1) checking for file conflicts [######################] 100%
(1/1) installing jre [######################] 100%
The jre package is licensed software.
You MUST read and agree to the license stored in
/usr/share/licenses/jre/LICENSE before using it.
Please relogin to include jre in your PATH.
Arch Linux中，Java SDK默认的安装位置是/opt/java
$ pwd
/opt/java
$ ls
jre
至此，JRE成功安装。
- JDK
JDK的安装过程与JRE类似。
$ tar -zxvf jdk.tar.gz
$ cd jdk
$ makepkg
$ sudo pacman -U ./jdk-7u1-1-i686.pkg.tar.xz
Password:
resolving dependencies...
looking for inter-conflicts...
Targets (1): jdk-7u1-1
Total Download Size: 0.00 MB
Total Installed Size: 114.85 MB
Proceed with installation? [Y/n]
(1/1) checking package integrity [######################] 100%
(1/1) checking for file conflicts [######################] 100%
(1/1) installing jdk [######################] 100%
The jdk package is licensed software.
You MUST read and agree to the license stored in
/usr/share/licenses/jdk/LICENSE before using it.
Please relogin to include jdk in your PATH
配置：
安装之后打开/etc/environment文件编辑，添加如下内容：
#
CLASSPATH=.:/opt/java/lib
JAVA_HOME=/opt/java
添加之后就可以使用java和javac命令了
java version "1.7.0_01"
Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
Java HotSpot(TM) Client VM (build 21.1-b02, mixed mode)
$ javac -version
javac 1.7.0_01
更详细的内容可参考傻东の学习笔记
