linux下jdk&&maven环境配置

#java and maven
export JAVA_HOME=/usr/local/lib/jdk1.7.0_67
export JRE_HOME=${JAVA_HOME}/jre
export MAVEN_HOME=/usr/local/lib/apache-maven-3.3.1
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib:$CLASSPATH
export PATH=${JAVA_HOME}/bin:${MAVEN_HOME}/bin:$PATH