软件下载:
软件卸载:
已有OpenJdk卸载
查询现有Java Jdk版本java -version
查看已经安装版本rpm -qa|grep java
进行卸载:
rpm -e --nodeps java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64rpm -e --nodeps java-1.7.0-openjdk-headless-1.7.0.111-2.6.7.8.el7.x86_64
查看卸载情况java -version
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
上传linux系统cd /usr/local/soft/
解压:tar -zxvf jdk-8u11-linux-x64.tar.gz
配置环境变量: vim /etc/profileexport JAVA_HOME=/usr/local/soft/jdk1.8.0_11export PATH= P A T H PATH PATHJAVA_HOME/bin
保存退出使修改立即生效:source /etc/profile
验证:java -version