如何卸载linux自带openjdk并安装sun jdk

如何卸载如何卸载linux自带自带openjdk并安装并安装sun jdk

主要介绍了如何卸载linux自带openjdk并安装sun jdk,本文给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下

参见：https://www.jb51.net/article/112612.htm

检查一下系统中的jdk版本

[hadoop@master ~]$ java -version

openjdk version "1.8.0_222-ea"

OpenJDK Runtime Environment (build 1.8.0_222-ea-b03)

OpenJDK 64-Bit Server VM (build 25.222-b03, mixed mode)

java-1.8.0-openjdk-1.8.0.222.b03-1.el7.x86_64

[hadoop@master ~]$

卸载openjdk

[hadoop@master ~]$ sudo yum -y remove *openjdk*

[sudo] password for hadoop:

Loaded plugins: langpacks, ulninfo

Resolving Dependencies

--> Running transaction check

---> Package java-1.8.0-openjdk.x86_64 1:1.8.0.222.b03-1.el7 will be erased

--> Processing Dependency: java >= 1.5 for package: jline-1.0-8.el7.noarch

--> Running transaction check

---> Package rhino.noarch 0:1.7R5-1.el7 will be erased

--> Finished Dependency Resolution

ol7_UEKR5/x86_64 | 2.5 kB 00:00:00

ol7_latest/x86_64 | 2.7 kB 00:00:00

Dependencies Resolved

==========================================================================================================================================================================================================

Package Arch Version Repository Size

jline noarch 1.0-8.el7 @anaconda/7.7 72 k

rhino noarch 1.7R5-1.el7 @anaconda/7.7 1.1 M

Transaction Summary

==========================================================================================================================================================================================================

Remove 2 Packages (+3 Dependent packages)

Installed size: 110 M

Downloading packages:

Running transaction check

Erasing : 1:java-1.8.0-openjdk-1.8.0.222.b03-1.el7.x86_64 4/5

Erasing : 1:java-1.8.0-openjdk-headless-1.8.0.222.b03-1.el7.x86_64 5/5

Verifying : 1:java-1.8.0-openjdk-headless-1.8.0.222.b03-1.el7.x86_64 1/5

Verifying : 1:java-1.8.0-openjdk-1.8.0.222.b03-1.el7.x86_64 2/5

Verifying : icedtea-web-1.7.1-1.el7.x86_64 3/5

Verifying : rhino-1.7R5-1.el7.noarch 4/5

Verifying : jline-1.0-8.el7.noarch 5/5

Removed:

java-1.8.0-openjdk.x86_64 1:1.8.0.222.b03-1.el7 java-1.8.0-openjdk-headless.x86_64 1:1.8.0.222.b03-1.el7

[hadoop@master ~]$ sudo tar -xzf jdk-8u191-linux-x64.tar.gz -C /usr/lib/jvm

设置环境变量,在/etc/profile最前面加上

export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_191

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib

export PATH=${JAVA_HOME}/bin:$PATH

最后生效一下source /etc/profile

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