centos7安装jdk

1.java -verison

2.rpm -qa | grep java

rpm -e --nodeps .....

 

3.tar -zxvf jdk.....

4.export JAVA_HOME=/usr/local/java/jdk1.8.0_91
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

5. source /etc/profile