CentOS版本：CentOS-7-x86_64-Minimal-1511

1、查看可以安装的openjdk版本

[root@localhost~]# yum search openjdk

2、选择要安装openjdk版本（无需输全称）

[root@localhost~]# yum -y install java-1.8.0-openjdk
Dependency installed:
…
Complete!

3、查看安装情况

[root@localhost~]# java -version
openjdk version “1.8.0_111”
OpenJDK Runtime Enviroment (build 1.8.0_111-b15)
OpenJDK 64-Bit Server VM (build 25.111-b15,mixed mode)

4、卸载openjdk（无需输全称）

[root@localhost~]# rpm -qa|grep jdk
java-1.8.0-openjdk-headless-1.8.0.111-1.b15.e17_2.x86_64
java-1.8.0-openjdk-1.8.0.111-1.b15.e17_2.x86_64
[root@localhost~]# yum -y remove java java-1.8.0-openjdk
[root@localhost~]# yum -y remove java java-1.8.0-openjdk-headless

5、查看卸载情况

[root@localhost~]# java -version
-bash:/bin/java:No such file or directory