安装JDK_Linux
准备JDK安装文件：
jdk-6u26-linux-x64.bin

开始安装：

步骤 1 以root用户身份登录服务器。

步骤 2 执行如下命令，进入目录/usr下。
        cd /usr

步骤 3 执行如下命令，赋予安装文件可执行权限。
        chmod +x jdk-6u26-linux-x64.bin

步骤 4 执行如下命令，安装JDK。
        ./jdk-6u26-linux-x64.bin

当屏幕显示如下信息时，表明JDK安装成功：
Java(TM) SE Development Kit 6 successfully installed.

Product Registration is FREE and includes many benefits:
* Notification of new versions, patches, and updates
* Special offers on Oracle products, services and training
* Access to early releases and documentation

Product and system data will be collected. If your configuration
supports a browser, the JDK Product Registration form will
be presented. If you do not register, none of this information
will be saved. You may also register your JDK later by
opening the register.html file (located in the JDK installation
directory) in a browser.

For more information on what data Registration collects and
how it is managed and used, see:
http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html

Press Enter to continue.....

步骤 5 单击回车键，完成JDK的安装。

JDK被安装在目录/usr/jdk1.6.0_26下。

----结束



安装验证

步骤 1 以root用户身份登录服务器。

步骤 2 执行如下命令，查看JDK的版本是否为“1.6.0_26”。
/usr/jdk1.6.0_26/bin/java –version

显示如下信息：
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Server VM (build 20.1-b02, mixed mode)

----结束