ubuntu13.04下安装jdk7
2014-04-11 15:47
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转自:/article/9045729.html参考http://www.neversaydie.cc/ubuntu-install-jdk-in-detailed/ 而来1.手工从Oralce官网下载jdk-7u25-linux-x64.gz 然后mv jdk-7u25-linux-x64.gz /usr/local/devtools2.解压 tar zxvf jdk-7u25-linux-x64.gz3.设置环境变量
sudo update-alternatives --install /usr/bin/java java /usr/local/devtools/jdk1.7.0_25/bin/java 300sudo update-alternatives --install /usr/bin/javac javac /usr/local/devtools/jdk1.7.0_25/bin/javac 300sudo update-alternatives --install /usr/bin/jar jar /usr/local/devtools/jdk1.7.0_25/bin/jar 300sudo update-alternatives --install /usr/bin/javah javah /usr/local/devtools/jdk1.7.0_25/bin/javah 300sudo update-alternatives --install /usr/bin/javap javap /usr/local/devtools/jdk1.7.0_25/bin/javap 300sudo update-alternatives --config java6.验证安装是否成功
出现一下信息则说明成功了
java version "1.7.0_25"Java(TM) SE Runtime Environment (build 1.7.0_25-b15)Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
vim
/etc/profile按a进入编辑模式,在文件最后输入#set java environmentexport JAVA_HOME=/usr/local/devtools/jdk1.7.0_25export CLASSPATH=.:${JAVA_HOME}/lib:$CLASSPATHexport PATH=${JAVA_HOME}/bin:$PATH按ESC退出编辑模式,输入:wqPS:看到有好多人设置了JRE_HOME,个人认为没有必要
使命令生效source
/etc/profile
4.再次设置环境变量
vim
/etc/bash
.bashrc[/code]按a进入编辑模式,在文件最后输入#set java environmentexport JAVA_HOME=/usr/local/devtools/jdk1.7.0_25export CLASSPATH=.:${JAVA_HOME}/lib:$CLASSPATHexport PATH=${JAVA_HOME}/bin:$PATH按ESC退出编辑模式,输入:wq
使命令生效source
/etc/bash
.bashrc
5.如果ubuntu可能还会有默认的jdk,如openjdk;为了使默认使用的是我们安装的jdk,还需执行如下命令:
sudo update-alternatives --install /usr/bin/java java /usr/local/devtools/jdk1.7.0_25/bin/java 300sudo update-alternatives --install /usr/bin/javac javac /usr/local/devtools/jdk1.7.0_25/bin/javac 300sudo update-alternatives --install /usr/bin/jar jar /usr/local/devtools/jdk1.7.0_25/bin/jar 300sudo update-alternatives --install /usr/bin/javah javah /usr/local/devtools/jdk1.7.0_25/bin/javah 300sudo update-alternatives --install /usr/bin/javap javap /usr/local/devtools/jdk1.7.0_25/bin/javap 300sudo update-alternatives --config java6.验证安装是否成功
java -version
出现一下信息则说明成功了
java version "1.7.0_25"Java(TM) SE Runtime Environment (build 1.7.0_25-b15)Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
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