jdk_install

Win系统

JAVA_HOME
C:\Program Files\Java\jdk1.8.0_131

Path
%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;

CLASSPATH
.;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar

验证：cmd   javac

 

Centos7  install

mkdir -p /usr/local/jdk
tar -zxvf jdk-8u211-linux-x64.tar.gz -C /usr/local/jdk

cat >>/etc/profile<<EOF
export JAVA_HOME=/usr/local/jdk/jdk1.8.0_211/
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH
EOF

source /etc/profile
java -version