Linux 卸载OpenJDK
1、查询jdk版本
java -version
结果如下：
openjdk version "1.8.0_312" OpenJDK Runtime Environment (build 1.8.0_312-b07) OpenJDK 64-Bit Server VM (build 25.312-b07, mixed mode) 2、查找已安装的jdkrpm -qa | grep jdk
结果如下：
java-1.8.0-openjdk-1.8.0.312.b07-1.el7_9.x86_64 java-1.8.0-openjdk-devel-1.8.0.312.b07-1.el7_9.x86_64 copy-jdk-configs-3.3-10.el7_5.noarch java-1.8.0-openjdk-headless-1.8.0.312.b07-1.el7_9.x86_64 3、卸载（.noarch可不删除）rpm -e --nodeps java-1.8.0-openjdk-1.8.0.312.b07-1.el7_9.x86_64 rpm -e --nodeps java-1.8.0-openjdk-devel-1.8.0.312.b07-1.el7_9.x86_64 rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.312.b07-1.el7_9.x86_64