jdk环境配置

1.下载jdk

Java SE 8的官方网址是
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.解压文件

tar -xvf jdk-8u65-linux-x64.tar.gz

3.添加环境变量

vim /etc/profile

export JAVA_HOME=/home/software/jdk1.8.0_65
export JRE_HOME=/home/software/jdk1.8.0_65/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

4.使环境变量生效

source /etc/profile

5.测试jdk是否成功

java -version