进阶day10-.static和transient在序列化中的区别与作用

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("student.txt"));
+        ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("student2.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("student.txt"));
+        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("student2.txt"));
         Object o = ois.readObject();
         if (o instanceof Student) {
             Student s = ((Student) o);

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

@@ -6,7 +6,9 @@ Serializable接口的作用：起到一个标识的作用，确认当前类的
  */
 public class Student implements Serializable {
     String name;
-    int age;
+    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
+
+    static String classroom = "1903";//不会被序列化，静态内容跟着字节码文件，只跟类有关
 
     public Student(String name, int age) {
         this.name = name;