linux安装jdk

1 下载官网jdk-7u80-linux-x64.tar.gz

2 解压文件

tar zxvf jdk-7u80-linux-x64.tar.gz - C / usr / local/ 3 设置环境变量 vi /etc/profile

JAVA_HOME=/usr/local/jdk1.7.0_80

PATH=$JAVA_HOME/bin:$PATH

export JAVA_HOME

export PATH 变量生效 source /etc/profile 备注centos 卸载已安装的jdk 查询安装 rpm -qa | grep jdk 卸载安装 yum -y remove jdk

卸载jdk

rpm -qa | grep java

rpm -e --nodeps java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64