centos6.6 安装jdk 1.8.0_51

1 下载jdk-8u51-linux-x64.tar.gz

历史版本：https://www.oracle.com/java/technologies/oracle-java-archive-downloads.html
jdk8版本：https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html

2 解压

# mkdir -p /Data/apps/jdk
# tar -zxvf jdk-8u51-linux-x64.tar.gz
# mv jdk1.8.0_51/* /Data/apps/jdk/

3 配置环境变量

vi /etc/profile

export JAVA_HOME=/Data/apps/jdk
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH

4 配置生效

# source /etc/profile

5 查看版本

[root@localhost jdk]# java -version
java version "1.8.0_51"
Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
Java Hot