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  • Ubuntu16.04安装oracle-java8-installer

    本篇博客参考

    1. 安装默认JRE/JDK

    • 更新
     sudo apt-get update
    
    • 检查是否安装了Java
    java -version
    
    • 如果返回The program java can be found in the following packages,说明电脑上并没有安装Java,请执行:
    sudo apt-get install default-jre
    
    • 这将会安装JRE(Java Runtime Environment),如果需要安装JDK(Java Development Kit)的话,请执行:
    sudo apt-get install default-jdk
    

    安装Oracle JDK

    sudo apt-get install python-software-properties
    sudo add-apt-repository ppa:webupd8team/java
    sudo apt-get update
    

    安装oracle-java8-installer

    sudo apt-get install oracle-java8-installer
    

    Setting the "JAVA_HOME"

    sudo update-alternatives --config java
    
    • 返回结果如下:
    There are 2 choices for the alternative java (providing /usr/bin/java).
    
      Selection    Path                                            Priority   Status
    ------------------------------------------------------------
      0            /usr/lib/jvm/java-8-oracle/jre/bin/java          1081      auto mode
      1            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode
    * 2            /usr/lib/jvm/java-8-oracle/jre/bin/java          1081      manual mode
    
    Press <enter> to keep the current choice[*], or type selection number: 
    
    

    含义:

    1. /usr/lib/jvm/java-8-oracle
    2. /usr/lib/jvm/java-8-openjdk-amd64
    3. /usr/lib/jvm/java-8-oracle
    • 复制路径信息,并修改/etc/environment文件:
    sudo gedit /etc/environment
    
    • 在最后一行添加:
    JAVA_HOME="YOUR_PATH"
    
    • 然后执行:
    source /etc/environment
    
    • 测试
    echo $JAVA_HOME
    

    大功告成!

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  • 原文地址:https://www.cnblogs.com/031602523liu/p/9923699.html
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