Repository navigation
Expand file tree
/
Copy pathRun3_singleton2.java
More file actions
65 lines (57 loc) · 2.03 KB
/
Copy pathRun3_singleton2.java
File metadata and controls
65 lines (57 loc) · 2.03 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
package com.brianway.learning.java.multithread.singleton.example3;
/**
* Created by Brian on 2016/4/16.
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* p273
* 序列化与反序列化的单例模式实现
*/
public class Run3_singleton2 {
public static void main(String[] args) {
try {
MyObject2 myObject = MyObject2.getInstance();
FileOutputStream fos = new FileOutputStream(new File("myObject.txt"));
ObjectOutputStream oos = new ObjectOutputStream(fos);
oos.writeObject(myObject);
oos.close();
fos.close();
System.out.println(myObject.hashCode() + " " + myObject);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
FileInputStream fis = new FileInputStream(new File("myObject.txt"));
ObjectInputStream ios = new ObjectInputStream(fis);
MyObject2 myObject = (MyObject2) ios.readObject();
ios.close();
fis.close();
System.out.println(myObject.hashCode() + " " + myObject);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
/*
输出:
325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
1173230247 com.brianway.learning.java.multithread.singleton.example3.MyObject2@45ee12a7
------------------------
取消MyObject2中protected Object readResolve()的注释
输出:
325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
调用了readResolve方法
325040804 com.brianway.learning.java.multithread.singleton.example3.MyObject2@135fbaa4
*/