JAVA 安装

1.tar包传输

cd /root/soft

tar -zxvf jdk-8u-...

mkdir /usr/local/java/

mv jdk-1.8....   /usr/local/java/

vi /etc/environment 

追加三行

export JAVA_HOME=/usr/local/java/jdk1.8.0_152
export JRE_HOME=/usr/local/java/jdk1.8.0_152/jre
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

vi   /etc/profile

export JAVA_HOME=/usr/local/java/jdk1.8.0_152
export JRE_HOME=/usr/local/java/jdk1.8.0_152/jre
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOME/bin

source /etc/profile