centos6.5安装jdk配置环境变量

JAVA_HOME=/usr/local/jdk/
JAVA_BIN=/usr/local/jdk/bin
JRE_HOME=/usr/local/jdk/jre
PATH=$PATH:/usr/local/jdk/bin:/usr/local/jdk/jre/bin
CLASSPATH=/usr/local/jdk/jre/lib:/usr/local/jdk/lib:/usr/local/jdk/jre/lib/charsets.jar
export  JAVA_HOME  JAVA_BIN JRE_HOME  PATH  CLASSPATH