42 lines
1.4 KiB
Java
42 lines
1.4 KiB
Java
package com.inmind.object_stream03;
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import java.io.*;
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import java.util.ArrayList;
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/*
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1. 将存有多个自定义对象的集合序列化操作，保存到list.txt文件中。
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2. 反序列化list.txt ，并遍历集合，打印对象信息。
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*/
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public class Test13 {
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public static void main(String[] args) throws IOException, ClassNotFoundException {
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//创建集合保存学生对象
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ArrayList<Student> students = new ArrayList<>();
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students.add(new Student("张三", 18));
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students.add(new Student("李四", 20));
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students.add(new Student("王五", 19));
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//序列化保存集合
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ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("list.txt"));
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oos.writeObject(students);
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oos.close();
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//创建反序列化流对象
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ObjectInputStream ois = new ObjectInputStream(new FileInputStream("list.txt"));
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Object o = ois.readObject();
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ArrayList objs = null;
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if (o instanceof ArrayList) {
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objs = (ArrayList) o;
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}
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//遍历集合，打印对象信息。
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for (Object obj : objs) {
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if (obj instanceof Student) {
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Student s = (Student) obj;
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System.out.println(s.name);
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System.out.println(s.age);
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System.out.println(s);
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}
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}
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}
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}
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