Jdk1.7安装步骤(rpm)

4.0.1 清除系统自带的jdk

查看：rpm -qa | grep jdk 卸载：yum remove xxx

4.0.2 赋予权限

chmod  777 jdk-7u80-linux-x64.rpm

4.0.3 执行安装

rpm -ivh jdk-7u80-linux-x64.rpm

4.0.4配置环境变量(/etc/profile)

export JAVA_HOME=/usr/java/jdk1.7.0_80 export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar   调用source /etc/profile 检查是否安装成功