Java学习之IO流（操作对象）

Posted 2020-11-24 一杯水M

操作对象

ObjectInputStream与ObjectOutputStream

就是把对象持久化（对象存储到硬盘上），表现形式就是对象文件

持久化对象必须实现Serializable接口

 1 public class Person implements Serializable {
 2     private String name;
 3     private int age;
 4 
 5     public Person() {
 6     super();
 7     }
 8 
 9     public Person(String name, int age) {
10     super();
11     this.name = name;
12     this.age = age;
13     }
14 
15     public String getName() {
16     return name;
17     }
18 
19     public void setName(String name) {
20     this.name = name;
21     }
22 
23     public int getAge() {
24     return age;
25     }
26 
27     public void setAge(int age) {
28     this.age = age;
29     }
30 }

一、ObjectOutputStream

1 public static void writeObj() throws IOException {
2     ObjectOutputStream oos=new ObjectOutputStream(new FileOutputStream("obj.object"));
3     oos.writeObject(new Person("zhang",13));
4     oos.close();
5     }

二、ObjectInputStream

1 private static void readObj() throws IOException, ClassNotFoundException {
2     ObjectInputStream ois=new ObjectInputStream(new FileInputStream("obj.object"));
3     Person p=(Person)ois.readObject();
4     System.out.println(p.getName()+":"+p.getAge());
5     }