centos7 安装java1.8

1.查看是否安装了openjdk

rpm -qa | grep java

卸载openjdk

rpm -e --nodeps `rpm -qa | grep java`

2.安装java

tar -xvf jdk-xxxxxxxxx.tar.gz

mv jdkxxxx  java

3.配置环境变量

vi /etc/profile

export JAVA_HOME=/usr/local/javaexport PATH=$JAVA_HOME/bin:$PATH   ##  ==前后不要有空格

source /etc/profile

测试安装java是否成功

java -version

javac