centOS上配置JDK1.7

下载jdk

http://www.oracle.com/technetwork/java/javase/downloads/java-se-jdk-7-download-432154.html

后面的操作我都是用root身份来执行的

[root@localhost Desktop]# mv jdk-7u45-linux-i586.rpm /usr/java

切换到/usr/java目录下

[root@localhost java]# rpm -ivh jdk-7u45-linux-i586.rpm

设置环境变量

[root@localhost java]# vi /etc/profile

把下面内容加入到profile文件末尾

JAVA_HOME=/usr/java/jdk1.7.0_45PATH=$JAVA_HOME/bin:$PATHCLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport JAVA_HOMEexport PATHexport CLASSPATH

查看java版本

[root@localhost java]# java -versionjava version "1.7.0_45"Java(TM) SE Runtime Environment (build 1.7.0_45-b18)Java HotSpot(TM) Client VM (build 24.45-b08, mixed mode, sharing)

至此表示jdk安装成功