java安装

export JAVA_HOME=/usr/local/jdk1.8.0_181 #jdk安装目录

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.: J A V A H O M E / l i b : {JAVA_HOME}/lib: JAVAH​OME/lib:{JRE_HOME}/lib:$CLASSPATH

export JAVA_PATH= J A V A H O M E / b i n : {JAVA_HOME}/bin: JAVAH​OME/bin:{JRE_HOME}/bin

export PATH= P A T H : PATH: PATH:{JAVA_PATH}