序例化多个对象

package serializable.cn;

import java.io.Serializable;

/*
 * 多个对象序例化
 */
public class Person implements Serializable {
    private String name;
    private int age;
    public Person(String name,int age){
        this.age = age;
        this.name = name;
    }
    public String toString (){
         return "姓名:"+this.name+"，年龄："+this.age;
    }
}

package serializable.cn;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
public class SerializableDemo {
public static void main(String[] args) throws Throwable {
    //new 多个对象出来
      Person [] per = {new Person("张三",30),new Person("李四",40),new Person("王五",50)};
      //ser()接收的是数组类型的参数
      ser(per);
      //dser()返回的是一个数组
     Object[] ct = dser();
     //遍历数组
     for (int i = 0; i < ct.length; i++) {
        //  方法 1：System.out.println(ct[i]);
         //方法2 ：将数组内容 转换为person对象
         Person p = (Person)ct[i];
         System.out.println(p);    
    }    
}
//序例化类，传一个object类型的数组参数
    public static void ser(Object[] obj) throws Throwable{
        File f = new File("d:"+File.separator+"e.txt");
        OutputStream out = new FileOutputStream(f);
         ObjectOutputStream otp = new ObjectOutputStream(out);
         //void    writeObject(Object obj)   将指定的对象写入 ObjectOutputStream。
         otp.writeObject(obj);         
         otp.close();
    }    
    //反序例化类,返回一个object 数组
      public static Object[] dser() throws Throwable{
       File f = new File("d:"+File.separator+"e.txt");
       InputStream ip = new FileInputStream(f);
       //new 一个对象输入流
       ObjectInputStream oji = new ObjectInputStream(ip);
      Object[] jec = ( Object[])oji.readObject();
        oji.close();
        return jec;     
      }
}