centos下安装和卸载jdk

谁借莪１个温暖的怀抱￠ 2022-10-21 01:30 215阅读 0赞

## centos 安装jdk ##

> 参考：https://www.linuxidc.com/Linux/2016-09/134941.htm

为了方便我常用的是yum安装

1.查看yum库中都有哪些jdk版本(暂时只发现了openjdk)

[root@localhost ~]# yum search java|grep jdk
    ldapjdk-javadoc.x86_64 : Javadoc for ldapjdk
    java-1.6.0-openjdk.x86_64 : OpenJDK Runtime Environment
    java-1.6.0-openjdk-demo.x86_64 : OpenJDK Demos
    java-1.6.0-openjdk-devel.x86_64 : OpenJDK Development Environment
    java-1.6.0-openjdk-javadoc.x86_64 : OpenJDK API Documentation
    java-1.6.0-openjdk-src.x86_64 : OpenJDK Source Bundle
    java-1.7.0-openjdk.x86_64 : OpenJDK Runtime Environment
    java-1.7.0-openjdk-demo.x86_64 : OpenJDK Demos
    java-1.7.0-openjdk-devel.x86_64 : OpenJDK Development Environment
    java-1.7.0-openjdk-javadoc.noarch : OpenJDK API Documentation
    java-1.7.0-openjdk-src.x86_64 : OpenJDK Source Bundle
    java-1.8.0-openjdk.x86_64 : OpenJDK Runtime Environment
    java-1.8.0-openjdk-demo.x86_64 : OpenJDK Demos
    java-1.8.0-openjdk-devel.x86_64 : OpenJDK Development Environment
    java-1.8.0-openjdk-headless.x86_64 : OpenJDK Runtime Environment
    java-1.8.0-openjdk-javadoc.noarch : OpenJDK API Documentation
    java-1.8.0-openjdk-src.x86_64 : OpenJDK Source Bundle
    ldapjdk.x86_64 : The Mozilla LDAP Java SDK

2.选择版本,进行安装

//选择1.7版本进行安装

[root@localhost ~]# yum install java-1.7.0-openjdk
    //安装完之后，默认的安装目录是在: /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75.x86_64

3.设置环境变量

[root@localhost ~]# vi /etc/profile

在profile文件中添加如下内容

#set java environment
    JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75.x86_64
    JRE_HOME=$JAVA_HOME/jre
    CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
    PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
    export JAVA_HOME JRE_HOME CLASS_PATH PATH

让修改生效

[root@localhost java]# source /etc/profile

## centos 卸载jdk ##

https://www.php.cn/centos/445181.html