objectstream.java

学了2个月java 练习用~ 可以看下 希望同意

import java.io.*;
import java.util.*;

public class objectStream
{
	public static void main(String[] args) throws Exception
	{
		testobject a=new testobject(20,"haha");
		testobject b=new testobject(22,"qiuqiu");
		testobject c=new testobject(23,"lafan");
		beanobject(a,"beanobject.txt");
		beanobject(b,"beanobject.txt");
		beanobject(c,"beanobject.txt");
		testobject x[]=outbean("beanobject.txt");

	}

	public static void beanobject(Object a,String b)throws Exception {
		ObjectOutputStream newout=new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(b,true)));
		newout.writeObject(a);
		newout.close();
	}

	public static testobject[] outbean(String b)throws Exception {
		ObjectInputStream newin=new ObjectInputStream(new BufferedInputStream(new FileInputStream(b)));
		testobject[] rt=new testobject[3];
		testobject now;
		int i=0;
		while ((now=(testobject)newin.readObject())!=null){
			now.print();
			//rt[i]=now;
			i++;
		}
		newin.close();
		return rt;
	}
}

class testobject implements Serializable{
	private int no;
	private String name;

	public testobject(int no,String name){
		this.no=no;
		this.name=name;
	}

	public void print(){
		System.out.println("NO is:"+no+"  Name is:"+name);
	}
}