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  • CentOS卸载系统自带的OpenJDK并安装Sun的JDK的方法

    查看目前系统的jdk: rpm -qa | grep jdk

    得到的结果: 

    [root@dc-01 java]#  rpm -qa | grep jdk

    java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686 

    卸载之:

     [root@dc-01 java]# yum -y remove java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686

    等一段时间就Complete了。

    下载Sun的JDK。我下载的是 

    jdk-6u37-linux-i586-rpm.bin 

    如果是64位系统的话,要下载:

     jdk-6u37-linux-x64-rpm.bin

    之类的64位专用的包 

    到/usr目录下创建java目录,将下载的文件放到/usr/java目录下 

    先将这个文件变为可执行文件(chmod 777) :

    [root@dc-01 java]# chmod 777 jdk-6u37-linux-i586-rpm.bin 

    然后执行这个文件件进行安装:

    [root@dc-01 java]# ./jdk-6u37-linux-i586-rpm.bin 
    Unpacking...
    Checksumming...
    Extracting...
    UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu).
      inflating: jdk-6u37-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..... 

    这个时候按一下回车。

    出现Done .

    至此安装结束。

    接下来配置JDK:

     vi /etc/profile打开profile文件,在profile文件的末尾加上:

    JAVA_HOME=/usr/java/jdk1.6.0_37
    PATH=$JAVA_HOME/bin:$PATH
    CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    export JAVA_HOME
    export PATH
    export CLASSPATH 

    保存并关闭profile文件,执行source /etc/profile命令让修改生效。

    运行下java-version 看一下java版本 :

     [root@dc-01 java]# java -version

    java version "1.6.0_37"
    Java(TM) SE Runtime Environment (build 1.6.0_37-b06)
    Java HotSpot(TM) Client VM (build 20.12-b01, mixed mode, sharing)
    [root@dc-01 java]# 

     ================================================

     至此,整个安装过程完毕。

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  • 原文地址:https://www.cnblogs.com/sixiweb/p/2787684.html
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