• asdfasf 

/**
 * nihao
 * @author Administrator
 *
 */
public class HelloWorld {
    public static void main(String[] args) {
        
        
        System.out.println("Hello world!");
//        nihao 你好你好
    }

}

 1 /**
 2  * nihao
 3  * @author Administrator
 4  *
 5  */
 6 public class HelloWorld {
 7     public static void main(String[] args) {
 8         
 9         
10         System.out.println("Hello world!");
11 //        nihao 你好你好
12     }
13 
14 }

HelloWorld