Linux卸载openjdk
#查看版本java -version显示如下: 自带的openjdkopenjdk version "1.8.0_275"OpenJDK Runtime Environment (build 1.8.0_275-b01)OpenJDK 64-Bit Server VM (build 25.275-b01, mixed mode)#查看jdk装置软件rpm -qa|grep java显示如下:java-1.8.0-openjdk-1.8.0.275.b01-0.el7_9.x86_64javapackages-tools-3.4.1-11.el7.noarchjava-1.8.0-openjdk-headless-1.8.0.275.b01-0.el7_9.x86_64python-javapackages-3.4.1-11.el7.noarchtzdata-java-2020d-2.el7.noarch#卸载openjdk #.noarch结尾的能够不必删除rpm -e --nodeps java-1.8.0-openjdk-1.8.0.275.b01-0.el7_9.x86_64rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.275.b01-0.el7_9.x86_64装置Oracle jdk
官网下载地址: https://www.oracle.com/java/t...
下载Linux x86版本: jdk-8u275-linux-x64.tar.gz
#解压tar -zxvf jdk-8u275-linux-x64.tar.gz#查看目录pwd/home/software/jdk1.8.0_275#设置环境变量vim /etc/profile#开端增加export JAVA_HOME=/home/software/jdk1.8.0_275export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jarexport PATH=$PATH:$JAVA_HOME/bin:wq!#保留退出#使配置失效source /etc/profile#查看版本java -version显示如下:java version "1.8.0_275"Java(TM) SE Runtime Environment (build 1.8.0_275-b11)Java HotSpot(TM) 64-Bit Server VM (build 25.275-b11, mixed mode)参考链接: https://www.cnblogs.com/yyjf/...