进阶day10-序列化流的练习

javaSE-day10/src/com/inmind/object_stream03/Test13.java

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