1 public class MyTest5 {
2
3 public static void main(String[] args) {
4 Singleton singleton = Singleton.getInstance();
5
6 System.out.println("counter1: "+Singleton.counter1);
7 System.out.println("counter2: "+Singleton.counter2);
8 }
9 }
10
11 class Singleton {
12 public static int counter1;
13
14 public static int counter2 = 0;
15
16 private static Singleton singleton = new Singleton();
17
18 private Singleton(){
19 counter1++;
20 counter2++;
21 }
22
23 public static Singleton getInstance(){
24 return singleton;
25 }
26 }
27
28 /*
29 * 输出:
30 * counter1: 1
31 * counter2: 1
32 * */
1 public class MyTest5 {
2
3 public static void main(String[] args) {
4 Singleton singleton = Singleton.getInstance();
5
6 System.out.println("counter1: "+Singleton.counter1);
7 System.out.println("counter2: "+Singleton.counter2);
8 }
9 }
10
11 class Singleton {
12 public static int counter1;
13
14 private static Singleton singleton = new Singleton();
15
16 private Singleton(){
17 counter1++;
18 counter2++;
19 }
20
21 public static int counter2 = 0;
22
23 public static Singleton getInstance(){
24 return singleton;
25 }
26 }
27
28 /*
29 * 输出:
30 * counter1: 1
31 * counter2: 0
32 * */