CentOS环境下openJDK安装

安装jdk
yum list *openjdk*
yum -y  install  java-1.7.0-openjdk-devel.x86_64 install

默认安装目录
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91.x86_64

配置环境变量
export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile