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  • 1.linux系统安装OracleJDK

    这一节将告诉你如何在linux下装oracle JDK 而不是open jdk

    1.去oracle官网下载jdk 附上网址:http://www.oracle.com/technetwork/java/javase/downloads/index.html

    2.解压jdk tar -xvf jdk-8-linux-i586.tar.gz (32-bit) tar -xvf jdk-8-linux-x64.tar.gz (64-bit) 或者直接用解压工具 自己随意

    3.将解压后的文件移动到/usr/lib下

    sudo mkdir -p /usr/lib/jvm  ---新建一个jvm文件夹
    sudo mv  ./jdk1.8.0 /usr/lib/jvm/ ---将jdk文件夹移动到/usr/lib下

    4.命令行中输入命令如下

    
    
    sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0/bin/java" 1
    sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.8.0/bin/javac" 1
    sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.8.0/bin/javaws" 1

    后边的1表示优先级,以后的安装会替代当前安装的版本作为默认版本

    5.给权限

    sudo chmod a+x /usr/bin/java
    sudo chmod a+x /usr/bin/javac
    sudo chmod a+x /usr/bin/javaws
    sudo chown -R root:root /usr/lib/jvm/jdk1.8.0

    6.列出当前系统安装的所有jdk版本 ,选择一个运行 ,如果是第一次安装jdk,则会运行当前的jdk

    sudo update-alternatives --config java
    sudo update-alternatives --config javac
    sudo update-alternatives --config javaws




    参考网址:http://askubuntu.com/questions/56104/how-can-i-install-sun-oracles-proprietary-java-jdk-6-7-8-or-jre

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  • 原文地址:https://www.cnblogs.com/zhangmc/p/4767652.html
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