1 public class Test2 {
 2     public void add(Byte b) {
 3         b = b++;
 4     }
 5 
 6     public void test() {
 7         Byte a = 127;
 8         Byte b = 127;
 9         add(++a);
10         System.out.println("a = "+a);
11         add(b);
12         System.out.println("b = "+b);
13     }
14 
15     public static void main(String[] args) {
16         Test2 test2=new Test2();
17         test2.test();
18     }
19 }