root@Huanuo-Training-Server jvm]# yum -y list java*
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.btte.net
 * extras: mirrors.btte.net
 * updates: mirrors.163.com
Installed Packages
java-1.7.0-openjdk.x86_64                           1:1.7.0.131-2.6.9.0.el7_3                           @updates
java-1.8.0-openjdk.x86_64                           1:1.8.0.121-0.b13.el7_3                             @updates
Available Packages
java-1.8.0-openjdk.i686                             1:1.8.0.131-2.b11.el7_3                             updates 
java-1.8.0-openjdk.x86_64                           1:1.8.0.131-2.b11.el7_3                             updates 
// 安装
[root@Huanuo-Training-Server jvm]# yum -y install java-1.7.0-openjdk.x86_64 
Loaded plugins: fastestmirror, langpacks
base                                                                                     | 3.6 kB  00:00:00     
base-source                                                                              | 2.9 kB  00:00:00     
centosplus-source                                                                        | 2.9 kB  00:00:00     
extras                                                                                   | 3.4 kB  00:00:00     
extras-source                                                                            | 2.9 kB  00:00:00     
mongodb-org-3.4                                                                          | 2.5 kB  00:00:00     
mysql-connectors-community                                                               | 2.5 kB  00:00:00     
mysql-connectors-community-source                                                        | 2.4 kB  00:00:00     
mysql-tools-community                                                                    | 2.5 kB  00:00:00     
mysql-tools-community-source                                                             | 2.4 kB  00:00:00     
mysql55-community                                                                        | 2.5 kB  00:00:00     
mysql55-community-source                                                                 | 2.4 kB  00:00:00     
mysql56-community                                                                        | 2.5 kB  00:00:00     
mysql56-community-source                                                                 | 2.4 kB  00:00:00     
mysql57-community-dmr                                                                    | 2.5 kB  00:00:00     
mysql57-community-dmr-source                                                             | 2.4 kB  00:00:00     
updates
// 省略一堆代码