Java8_Chapter02

Posted 2020-10-09 咸鱼

 1 public class MeaningOfThis {   
 2     public final int value = 4;
 3     public void doIt() {   
 4         int value = 6;
 5         Runnable r = new Runnable(){
 6             public final int value = 5;
 7             public void run(){
 8                 int value = 10;
 9                 System.out.println(this.value);
10             }
11         };
12         r.run(); }
13     public static void main(String...args) {   
14         MeaningOfThis m = new MeaningOfThis();
15         m.doIt(); //输出多少
16     }
17 }
答案：5