LINUX 安装 sun(oracle) jdk 1.6 替换 openjdk

1、安装 sun jdk

下载 JDK

ftp到服务器

[[email protected] home]# chmod +x jdk-6u45-linux-x64-rpm.bin

[[email protected] home]# ./jdk-6u45-linux-x64-rpm.bin

2、配置环境变量

[[email protected] home]#vi /etc/profile

底部添加

export JAVA_HOME=/usr/java/jdk1.6.0_45
export JRE_HOME=/usr/java/jdk1.6.0_45/jre
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib

[[email protected] home]# source /etc/profile

3、变更默认jdk为sun jdk

[[email protected] home]# update-alternatives --display java

红框处为openjdk 的优先级

[[email protected] home]# update-alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_45/bin/java 170044

[[email protected] home]# update-alternatives --install /usr/bin/javac javac /usr/java/jdk1.6.0_45/bin/javac 170044

[[email protected] home]# update-alternatives --config java

输入4 回车

4、验证