如何卸載linux自帶openjdk并安裝sun jdk
發(fā)布日期：2022-02-01 14:41 | 文章來源：gibhub
參見：https://www.jb51.net/article/112612.htm
檢查一下系統(tǒng)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)
檢測jdk安裝包
[hadoop@master ~]$ rpm -qa | grep java python-javapackages-3.4.1-11.el7.noarch javapackages-tools-3.4.1-11.el7.noarch tzdata-java-2019b-1.el7.noarch java-1.8.0-openjdk-headless-1.8.0.222.b03-1.el7.x86_64 java-1.8.0-openjdk-1.8.0.222.b03-1.el7.x86_64 [hadoop@master ~]$
卸載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 --> Processing Dependency: java-1.8.0-openjdk for package: icedtea-web-1.7.1-1.el7.x86_64 ---> Package java-1.8.0-openjdk-headless.x86_64 1:1.8.0.222.b03-1.el7 will be erased --> Running transaction check ---> Package icedtea-web.x86_64 0:1.7.1-1.el7 will be erased ---> Package jline.noarch 0:1.0-8.el7 will be erased --> Processing Dependency: jline for package: rhino-1.7R5-1.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 ========================================================================================================================================================================================================== Removing: java-1.8.0-openjdk x86_64 1:1.8.0.222.b03-1.el7 @anaconda/7.7 642 k java-1.8.0-openjdk-headless x86_64 1:1.8.0.222.b03-1.el7 @anaconda/7.7 106 M Removing for dependencies: icedtea-web x86_64 1.7.1-1.el7 @anaconda/7.7 2.3 M 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 Running transaction test Transaction test succeeded Running transaction Erasing : icedtea-web-1.7.1-1.el7.x86_64 1/5 Erasing : rhino-1.7R5-1.el7.noarch 2/5 Erasing : jline-1.0-8.el7.noarch 3/5 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 Dependency Removed: icedtea-web.x86_64 0:1.7.1-1.el7 jline.noarch 0:1.0-8.el7 rhino.noarch 0:1.7R5-1.el7 Complete!
上傳安裝介質(zhì)并解壓
[hadoop@master ~]$ sudo tar -xzf jdk-8u191-linux-x64.tar.gz -C /usr/lib/jvm
設(shè)置環(huán)境變量,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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