rpm -ivh jdk*.rpm
vi /etc/profile 增加以下参数
export JAVA_HOME = /usr/java/jdk文件名export CLASSPATH = .:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/tools.jarexport PATH = $PATH:$JAVA_HOME/bin
刷新系统环境变量source /etc/profile
