Linux下Java环境变量的安装与配置

# set Java environment
JAVA_HOME=/usr/share/jdk1.6.0_43
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME
export PATH
export CLASSPATH

[root@localhost ~]# echo $JAVA_HOME
/usr/share/jdk1.6.0_43
[root@localhost ~]# echo $PATH
/usr/share/jdk1.6.0_43/bin:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
[root@localhost ~]# echo $CLASSPATH
.:/usr/share/jdk1.6.0_43/lib/dt.jar:/usr/share/jdk1.6.0_43/lib/tools.jar
[root@localhost ~]# java -version
java version "1.6.0_43"
Java(TM) SE Runtime Environment (build 1.6.0_43-b01)
Java HotSpot(TM) 64-Bit Server VM (build 20.14-b01, mixed mode)