linux安裝jdk

1 下載官網jdk-7u80-linux-x64.tar.gz

 

2 解壓文件

tar zxvf  jdk-7u80-linux-x64.tar.gz    - C  / usr / local/
3 設置環境變量
vi /etc/profile

JAVA_HOME=/usr/local/jdk1.7.0_80

PATH=$JAVA_HOME/bin:$PATH

export JAVA_HOME

export PATH

變量生效

source /etc/profile

備註centos 卸載已安裝的jdk

查詢安裝
rpm -qa | grep jdk

卸載安裝

yum -y remove jdk

 

卸載jdk

rpm -qa | grep java

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