linux 配置jdk

目录解压

cd /usr/java/jdk1.8.0

tar -xvf jdk1.8.0.tar

//修改环境变量

vi etc/profile

export JAVA_HOME=/usr/java/jdk1.8.0

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

:q!

source etc/profile

java -version