zoukankan      html  css  js  c++  java
  • ubuntu配置java环境

    ubuntu系统默认没有安装java环境,当运行javac时提示没有安装:

    $ javac
    The program 'javac' can be found in the following packages:
     * default-jdk
     * ecj
     * gcj-5-jdk
     * openjdk-8-jdk-headless
     * gcj-4.8-jdk
     * gcj-4.9-jdk
     * openjdk-9-jdk-headless
    Try: sudo apt install <selected package>
    

    打开oracle官网,java下载地址

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

    根据系统选择版本,这里选择 jdk-8u144-linux-x64.tar.gz(Linux x64 176.92 MB)下载好之后,进行解压安装,这里安装到/opt/jdk-8目录下

    cd /opt/
    mkdir jdk1.8.0_144
    cd jdk1.8.0_144/
    mv /home/muti/Downloads/jdk-8u144-linux-x64.tar.gz  .
    tar -zxvf jdk-8u144-linux-x64.tar.gz 
    mv jdk1.8.0_144/* .
    

    然后在/etc/profile中新建java环境变量,

    vim /etc/profile

    填写内容如下

    export JAVA_HOME=/opt/jdk1.8.0_144
    export JRE_HOME=$JAVA_HOME/jre
    export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
    export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
    export JAVA_HOME=/usr/jdk1.8.0_144
    export JRE_HOME=$JAVA_HOME/jre
    export CLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
    export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
    

    立刻生效

    source /etc/profile
    

    检查是否正确安装

    java -version
    

    输出

    # java -version
    java version "1.8.0_144"
    Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
    Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
    

      

  • 相关阅读:
    Ping
    boost::python开发环境搭建
    mingw和libcurl
    ssh远程执行命令使用明文密码
    netty源码阅读之UnpooledByteBufAllocator
    Direct ByteBuffer学习
    clions的使用
    netty中的PlatformDependent
    STL之priority_queue(优先队列)
    c++线程调用python
  • 原文地址:https://www.cnblogs.com/yangxunwu1992/p/7257493.html
Copyright © 2011-2022 走看看