Java 序列化【笔记】

public class Family implements java.io.Serializable//实现 Serializable 接口
{
public String nickname;
public String hobby;
   public String job;
   public transient int no;//属性标明是短暂的，不可序列化
public void hobby()
{
      System.out.println(nickname+ "'s hobby is "
                           + hobby);
   }
}

import java.io.*;

public class Demo1
{
public static void main(String [] args)
   {
      Family f= new Family ();
      f.nickname = "Tester Achang";
      f.hobby = "yoga";
      f.job= "system testing";
      f.no = 89757;
try
      {
         FileOutputStream fileOut =
new FileOutputStream("/Serializedata/family.ser");
         ObjectOutputStream out = new ObjectOutputStream(fileOut);//ObjectOutputStream是序列化流，可以将Java程序中的对象写到文件中。
         out.writeObject(f);//ObjectOutputStream写对象的方法（特有方法）:void writeObject(Object obj)：向文件中写对象。
out.close();
         fileOut.close();
         System.out.printf("Data is saved in /Serializedata/family.ser");
      }catch(IOException i)
      {
          i.printStackTrace();
      }
   }
}

import java.io.*;

public class Demo2
{
public static void main(String [] args)
   {
      Family f = null;
try
      {
         FileInputStream fileIn = new FileInputStream("/Serializedata/family.ser");
         ObjectInputStream in = new ObjectInputStream(fileIn);//ObjectInputStream 是反序列化流， 可以将文件中的对象读取到 Java 程序中。
         f = (Family) in.readObject();//Object readObject()：从文件中读取对象，并将该对象返回。
in.close();
         fileIn.close();
      }catch(IOException i)
      {
         i.printStackTrace();
return;
      }catch(ClassNotFoundException c)
      {
         System.out.println("Class Family has not been found");
         c.printStackTrace();
return;
      }
      System.out.println("Deserialized Family...");
      System.out.println("Nickname: " + f.nickname);
      System.out.println("Hobby: " + f.hobby);
      System.out.println("Job: " + f.job);
      System.out.println("No: " + f.no);
    }
}

Deserialized Family...
Nickname:Tester Achang
Hobby:yoga
job:system testing
N0:0