学步园

1.下载jdk的rpm安装包，这里以jdk-6u21-linux-i586-rpm.bin为例进行说明

下载地址：http://www.oracle.com/technetwork/java/javase/downloads/index.html

2. 将jdk-6u21-linux-i586-rpm.bin 移动到合适的安装目录上，安装软件不要在/home路径下，这样很容易涉及到不同用户的访问权限，这样对程序的维护，是相当不利的。这里将把安装包移动到/opt目录

mv jdk-6u21-linux-i586-rpm.bin /opt ;把安装包移动到/opt目录<br /> cd /opt 

3. 给安装包赋予运行权限

chmod 755 jdk-6u21-linux-i586-rpm.bin  

3. 安装该rpm安装包

[root@localhost opt]# ./jdk-6u21-linux-i586-rpm.bin ;运行安装包<br /> Unpacking...<br /> Checksumming...<br /> Extracting...<br /> UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu).<br /> inflating: jdk-6u21-linux-i586.rpm<br /> inflating: sun-javadb-common-10.5.3-0.2.i386.rpm<br /> inflating: sun-javadb-core-10.5.3-0.2.i386.rpm<br /> inflating: sun-javadb-client-10.5.3-0.2.i386.rpm<br /> inflating: sun-javadb-demo-10.5.3-0.2.i386.rpm<br /> inflating: sun-javadb-docs-10.5.3-0.2.i386.rpm<br /> inflating: sun-javadb-javadoc-10.5.3-0.2.i386.rpm<br /> Preparing... ########################################### [100%]<br /> 1:jdk ########################################### [100%]<br /> Unpacking JAR files...<br /> rt.jar...<br /> jsse.jar...<br /> charsets.jar...<br /> tools.jar...<br /> localedata.jar...<br /> plugin.jar...<br /> javaws.jar...<br /> deploy.jar...<br /> Installing JavaDB<br /> Preparing... ########################################### [100%]<br /> 1:sun-javadb-common ########################################### [ 17%]<br /> 2:sun-javadb-core ########################################### [ 33%]<br /> 3:sun-javadb-client ########################################### [ 50%]<br /> 4:sun-javadb-demo ########################################### [ 67%]<br /> 5:sun-javadb-docs ########################################### [ 83%]<br /> 6:sun-javadb-javadoc ########################################### [100%]<br /> Java(TM) SE Development Kit 6 successfully installed.<br /> Product Registration is FREE and includes many benefits:<br /> * Notification of new versions, patches, and updates<br /> * Special offers on Sun products, services and training<br /> * Access to early releases and documentation<br /> Product and system data will be collected. If your configuration<br /> supports a browser, the Sun Product Registration form for<br /> the JDK will be presented. If you do not register, none of<br /> this information will be saved. You may also register your<br /> JDK later by opening the register.html file (located in<br /> the JDK installation directory) in a browser.<br /> For more information on what data Registration collects and<br /> how it is managed and used, see:</p> <p>http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html</p> <p>Press Enter to continue..... ;按回车键继续</p> <p>Done. 

4. 设置环境变量

[root@localhost opt]# vi /etc/profile ;编辑系统配置文件<br /> ==================================================================================<br /> JAVA_HOME=/usr/java/jdk1.6.0_24/ ;增加以下几行<br /> CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar ;主要是配置路径<br /> PATH=$JAVA_HOME/bin:$PATH ;<br /> export JAVA_HOME,PATH,CLASSPATH ;<br /> :wq ;保存退出