Java -----transient 和static

越来越喜欢深究java基础了，讲讲 transient  和static 对序列化的影响。废话少说，直接上代码就可以了

 package serializable;

 import java.io.Serializable;

 public class User implements Serializable {
     private String name;
     private transient String password; // 被transient修饰的变量
     private static String age;

     public User() {
         super();
     }

     public String getName() {
         return name;
     }

     public void setName(String name) {
         this.name = name;
     }

     public String getPassword() {
         return password;
     }

     public void setPassword(String password) {
         this.password = password;
     }

     public static String getAge() {
         return age;
     }

     public static void setAge(String age) {
         User.age = age;
     }

 }

 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;

 public class Test {
     public static void main(String[] args) throws Exception {
         // User user = new User();
         // user.setAge("22");
         // user.setName("小明");
         // user.setPassword("admin");
         // System.out.println(user.getAge()+"\t"+user.getName()+"\t"+user.getPassword());
         // ObjectOutputStream oos = new ObjectOutputStream(new
         // FileOutputStream("e:/user.txt"));
         // oos.writeObject(user);
         // oos.flush();
         // oos.close();
         //
         // ObjectInputStream ois = new ObjectInputStream(new
         // FileInputStream("e:/user.txt"));
         // User users = (User) ois.readObject();
         //
         // System.out.println(users.getAge()+"\t"+users.getName()+"\t"+users.getPassword());
         // User user = new User();
         // user.setAge("22");
         // user.setName("小明");
         // user.setPassword("admin");
         // System.out.println(user.getAge()+"\t"+user.getName()+"\t"+user.getPassword());
         // ObjectOutputStream oos = new ObjectOutputStream(new
         // FileOutputStream("e:/user.txt"));
         //
         // oos.writeObject(user);
         // oos.flush();
         // oos.close();

         ObjectInputStream ois = new ObjectInputStream(new FileInputStream("e:/user.txt"));
         User users = (User) ois.readObject();

         System.out.println(users.getAge() + "\t" + users.getName() + "\t" + users.getPassword());

     }
 }

运行截图贴上

第二次的代码运行截图，一目了然，

从运行结果可以看出用  transient 修饰的变量在反序列化后值为 null

被static修饰的变量应该也是不会被序列化的，因为只有堆内存会被序列化.所以静态变量会天生不会被序列化。也是null.