Deepin - 安装jdk（卸载openjdk）

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卸载openjdk

1. 查看openjdk版本

# nangy @ nangy-vm in ~ [22:07:46] 
$ java -version
zsh: command not found: java

# nangy @ nangy-vm in ~ [22:09:22] C:127
$ dpkg -l | grep openjdk

2. 卸载openjdk

# 本机没有，那就不用卸载，直接安装jdk

下载jdk

3. 下载jdk1.8
   官网下载

安装jdk

4. 安装jdk1.8

# nangy @ nangy-vm in ~ [22:09:35] C:1
$ cp /mnt/hgfs/VMware共享文件/software/jdk-8u211-linux-x64.tar.gz -R /home/nangy/Downloads 

# 以下操作切换成root用户
# nangy @ nangy-vm in ~ [22:16:31] 
$ su
密码：

# root @ nangy-vm in /home/nangy [22:18:46] 
$ cd /opt/

# root @ nangy-vm in /opt [22:19:02] 
$ mkdir java

# root @ nangy-vm in /opt [22:19:09] 
$ ll
总用量 32K
drwxr-xr-x 3 root root 4.0K 6月  15 21:28 deepinwine
drwxr-xr-x 3 root root 4.0K 6月  15 19:54 google
drwxr-xr-x 2 root root 4.0K 6月  16 22:19 java
drwxr-xr-x 3 root root 4.0K 6月  15 19:55 kingsoft
drwxr-xr-x 9 root root 4.0K 6月  15 19:58 pbis
drwxr-xr-x 4 root root 4.0K 6月  15 19:58 samsung
drwxr-xr-x 7 root root 4.0K 6月  15 19:58 smfp-common
drwxr-xr-x 4 root root 4.0K 6月  16 12:41 teamviewer

# root @ nangy-vm in /opt [22:19:14] 
$ tar -zxvf /home/nangy/Downloads/jdk-8u211-linux-x64.tar.gz -C /opt/java 

# root @ nangy-vm in /opt/java [22:22:32] 
$ cd /opt/java/jdk1.8.0_211 

# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:22:45] 
$ pwd
/opt/java/jdk1.8.0_211

5. 配置/etc/profile

root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:22:46] 
$ vim /etc/profile

• 添加到/etc/profile尾部

##JAVA_HOME
export JAVA_HOME=/opt/java/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH

• 保存并退出

wq

6. 使/etc/profile生效

# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:14] 
$ source /etc/profile
/etc/profile:35: no matches found: tty[1-6]

• 这里遇到了一个坑
  应该是deppin使用第三方shell造成的，至少我使用zsh的时候是这样
  解决方法：切换到bash再执行就OK了

# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:14] 
$ source /etc/profile
/etc/profile:35: no matches found: tty[1-6]

# 切换原生bash
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:28:15] 
$ bash

# 执行source生效
root@nangy-vm:/opt/java/jdk1.8.0_211# source /etc/profile

# 验证jdk版本
root@nangy-vm:/opt/java/jdk1.8.0_211# java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)

# 切换回zsh的shell界面
root@nangy-vm:/opt/java/jdk1.8.0_211# zsh

# 验证jdk版本
# root @ nangy-vm in /opt/java/jdk1.8.0_211 [22:36:20] 
$ java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)