TestNG (seven) group test

package com.course.testng.groups;

import org.testng.annotations.AfterGroups;
import org.testng.annotations.BeforeGroups;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

public class GroupsOnMethod {

    @Test(groups = "server")
    public void test1(){
        System.out.println("这是server 1 测试.......");
    }

    @Test(groups = "server")
    public void test2(){
        System.out.println("这是server 2测试............."); 
    } 

    @Test 
    public  void Test3 () { 
        System.out.println ( "test which is the client 1 ..........." ); 
    } 

    @BeforeGroups ( "Server" )
     public  void Server1 ( ) { 
        System.out.println ( "server which is performed before the test -----------------------" ); 
    } 

    @AfterGroups ( "server" )
     public  void Server2 () { 
        System.out.println ( "this is performed after execution server *********** test" ); 
    } 
}