直接下载jdk压缩包方式安装
1.官网下载JDK地址: http://www.oracle.com/technetwork/articles/javase/index-jsp-138363.html选择相应的 .gz包下载 2. 解压缩,放到指定目录(以jdk-7u60-linux-x64.gz为例)创建目录: sudo mkdir /usr/lib/jvm
加压缩到该目录: sudo tar -zxvf jdk-7u60-linux-x64.gz -C /usr/lib/jvm
3.修改环境变量:sudo vim ~/.bashrc
文件的末尾追加下面内容: #set oracle jdk environment 使环境变量马上生效 source ~/.bashrc 4.设置系统默认jdk 版本sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_60/bin/java 300
sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_60/bin/javac 300
sudo update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.7.0_60/bin/jar 300
sudo update-alternatives --install /usr/bin/javah javah /usr/lib/jvm/jdk1.7.0_60/bin/javah 300
sudo update-alternatives --install /usr/bin/javap javap /usr/lib/jvm/jdk1.7.0_60/bin/javap 300
然后执行: sudo update-alternatives --config java
若是初次安装jdk,会有下面的提示 There is only one alternative in link group java (providing /usr/bin/java): 否者,选择合适的jdk 5.测试jdkjava -version Java(TM) SE Runtime Environment (build 1.7.0_60-b19) jdk 安装成功 |
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