CentOS 安装jdk7

http://www.Oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html?

选择jdk-7u75-linux-x64.rpm?

新建目录?mkdir /usr/java?

切换到下载目录 将下载的文件copy到/usr/java? cp jdk-7u75-linux-x64.rpm /usr/java?

切换到/usr/java?修改权限chmod +x jdk-7u75-linux-x64.rpm?

运行rpm -ivh jdk-7u75-linux-x64.rpm

vi /etc/PRofile

在最后添加：?

#set java environment

export JAVA_HOME=/usr/java/jdk1.7.0_75

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export PATH=$PATH:$JAVA_HOME/binexport JAVA_HOME CLASSPATH PATH?

保存退出：x?

启用环境变量配置：source /etc/profile

?建立连接：?

cd /usr/bin

ln -s -f /usr/java/jdk1.7.0_75/jre/bin/java

ln -s -f /usr/java/jdk1.7.0_75/bin/javac?

java -version? javac?