下载后安装如下：

linux-4k5v:/home/fantlam/桌面 # chmod +x jdk-6u25-linux-i586-rpm.bin

Unpacking...

linux-4k5v:/home/fantlam/桌面 # ./jdk-6u25-linux-i586-rpm.bin

Checksumming...

Extracting...

UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu).

inflating: jdk-6u25-linux-i586.rpm

inflating: sun-javadb-common-10.6.2-1.1.i386.rpm

inflating: sun-javadb-core-10.6.2-1.1.i386.rpm

inflating: sun-javadb-client-10.6.2-1.1.i386.rpm

inflating: sun-javadb-demo-10.6.2-1.1.i386.rpm

inflating: sun-javadb-docs-10.6.2-1.1.i386.rpm

inflating: sun-javadb-javadoc-10.6.2-1.1.i386.rpm

Preparing...                ########################################### [100%]

1:jdk                    ########################################### [100%]

Unpacking JAR files...

rt.jar...

jsse.jar...

charsets.jar...

tools.jar...

localedata.jar...

plugin.jar...

javaws.jar...

deploy.jar...

Installing JavaDB

Preparing...                ########################################### [100%]

1:sun-javadb-common      ########################################### [ 17%]

2:sun-javadb-core        ########################################### [ 33%]

3:sun-javadb-client      ########################################### [ 50%]

4:sun-javadb-demo        ########################################### [ 67%]

5:sun-javadb-docs        ########################################### [ 83%]

6:sun-javadb-javadoc     ########################################### [100%]

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.....

./jdk-6u25-linux-i586-rpm.bin: line 94:  6262 已放弃               "$javaprefix/bin/java" com.sun.servicetag.Installer -source "$source" "$register_option" > /dev/null 2>&1

Done.

安装完会生成目录：/usr/java/jdk1.6.0_25

环境变量配置：

编辑 /etc/profile（所有用户生效）    或者 .profile  或.bashrc(此用户生效)
在最后添加：
export JAVA_HOME=/usr/java/jdk1.6.0_25
export CLASSPATH=.:$JAVA_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH
注销后即可生效：