进阶day10-序列化中的版本号问题

javaSE-day10/src/com/inmind/object_stream03/Demo11.java

@@ -21,7 +21,7 @@ public class Demo11 {
         Student s = new Student("张三", 20);
 
         //序列化：将java对象保存到文件中
-        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("student2.txt"));
+        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("student3.txt"));
         oos.writeObject(s);
 
         oos.close();

javaSE-day10/src/com/inmind/object_stream03/Demo12.java

@@ -18,7 +18,7 @@ import java.util.function.Supplier;
 public class Demo12 {
     //将之前的student.txt读取到java进程中生成一个叫张三，18的Student对象
     public static void main(String[] args) throws IOException, ClassNotFoundException {
-        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("student2.txt"));
+        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("student3.txt"));
         Object o = ois.readObject();
         if (o instanceof Student) {
             Student s = ((Student) o);

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

@@ -1,10 +1,15 @@
 package com.inmind.object_stream03;
 
+import java.io.Serial;
 import java.io.Serializable;
 /*
 Serializable接口的作用：起到一个标识的作用，确认当前类的对象可以序列化
  */
 public class Student implements Serializable {
+
+
+    @Serial
+    private static final long serialVersionUID = 7268053700279080345L;//字节码文件的版本号
     String name;
     transient int age;//transient:瞬态，在序列化对象时，被它修饰的属性，不能被保存
 
@@ -14,4 +19,9 @@ public class Student implements Serializable {
         this.name = name;
         this.age = age;
     }
+
+    public void method(){
+
+    }
+
 }