夜雨惊风 Linux下卸载openjdk，安装jdk

小咪咪 2023-06-01 03:17 20阅读 0赞

1.查看java版本

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      <code>[root@CFDB2 ~]# java -version</code> 
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      <code>openjdk version&nbsp;</code> 
      <code>"1.8.0_171"</code> 
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      <code>OpenJDK Runtime Environment (build 1.8.0_171-b10)</code> 
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      <code>OpenJDK 64-Bit Server VM (build 25.171-b10, mixed mode)</code> 
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2.查看java安装软件

![复制代码][copycode.gif]

[root@CFDB2 ~]# rpm -qa|grep java
    tzdata-java-2018e-3.el7.noarch
    java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64
    java-1.7.0-openjdk-headless-1.7.0.181-2.6.14.8.el7_5.x86_64
    java-1.7.0-openjdk-1.7.0.181-2.6.14.8.el7_5.x86_64
    javapackages-tools-3.4.1-11.el7.noarch
    python-javapackages-3.4.1-11.el7.noarch
    java-1.8.0-openjdk-headless-1.8.0.171-8.b10.el7_5.x86_64
    [root@CFDB2 ~]#

![复制代码][copycode.gif]

3.卸载openjdk

.noarch可以不用删除

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      <code>rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.101-3.b13.el7_2.x86_64</code> 
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4.上传jdk包

官网下载jdk包，上传到服务器上

5.解压

[root@localhost ruanjian]# tar -vzxf jdk-8u191-linux-x64.tar.gz

6.设置环境变量

[root@localhost ruanjian]# vim /etc/profile

末尾添加

#java_home
    export JAVA_HOME=/ruanjian/jdk1.8.0_191
    export PATH=$PATH:$JAVA_HOME/bin

保存退出，执行

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

7.测试

[root@localhost ruanjian]# java -version
    java version "1.8.0_191"
    Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
    Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
    [root@localhost ruanjian]#

转载于:https://www.cnblogs.com/Jeely/p/11352307.html

[copycode.gif]: /images/20230601/1bf102f137474eb3b1aae2ed9409b85b.png