linux卸载和安装jdk

时间 2019-11-18

标签 linux 卸载安装 jdk 栏目 Linux 繁體版

原文原文链接

一。卸载java

1.rpm -qa|grep jdk ，查看安装的jdk的组件node

[root@host-10-20-88-228 ~]# rpm -qa|grep jdk
copy-jdk-configs-3.3-10.el7_5.noarch
java-1.8.0-openjdk-devel-1.8.0.191.b12-0.el7_5.x86_64
java-1.8.0-openjdk-headless-1.8.0.191.b12-0.el7_5.x86_64
java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.x86_64

2.rpm -e --nodeps 卸载命令linux

[root@host-10-20-88-228 ~]# rpm -e --nodeps copy-jdk-configs-3.3-10.el7_5.noarch
[root@host-10-20-88-228 ~]# rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.191.b12-0.el7_5.x86_64
[root@host-10-20-88-228 ~]# rpm -e --nodeps java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.x86_64

二。安装less

放在/usr/local/src下执行如下安装命令：ui

rpm -ivh jdk-8u131-linux-x64.rpm

默认会安装在/usr/java下code

五、检查是否安装it

[root@host-10-20-88-228 soft]# java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

显示：jvav version"1.8.0_131" ...表示成功io

六、配置环境变量变量

# vi /etc/profile jdk

在最后加入如下几行：

JAVA_HOME=/usr/java/jdk1.7.0_71

CLASS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

PATH=$JAVA_HOME/bin:$PATH

export JAVA_HOME CLASS_PATH PATH

执行下面命令当即生效

source /etc/profile