1. 打开官网下载Java安装文件 jdk-7u15-linux-x64.tar.gz 2.打开终端,根据个人习惯建立目录 sudo mkdir /usr/local/development 3.将下载的文件移动到这个文件夹下面并进行解压。使用如下命令: sudo mv jdk-7u15-linux-x64.tar.gz /usr/local/developmentsudo tar -zxvf jdk-7u15-linux-x64.tar.gz 4.修改环境变量 sudo gedit /etc/environment源文件的内容是这样的: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games" 修改为: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:${JAVA_HOME}/bin" JAVA_HOME=/usr/local/development/jdk1.7.0_15 jre_HOME=${JAVA_HOME}/jre CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib" 5.重新加载bashrc source ~/.bashrc 6.配置默认JDK sudo update-alternatives --install /usr/bin/javap javap /usr/local/development/jdk1.7.0_15/bin/javap 300 sudo update-alternatives --install /usr/bin/javadoc javadoc /usr/local/development/jdk1.7.0_15/bin/javadoc 300 7.测试: java -version如下显示表示配置成功: arlen@Arlen-TOP2:~$ java -version java version "1.7.0_15" Java(TM) SE Runtime Environment (build 1.7.0_15-b03) Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode) arlen@Arlen-TOP2:~$ |
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