Java序列化问题

import java.io.Serializable;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.lang.Exception;

public class TestS implements Serializable{

private int width;
private int height;

public void setWidth(int width){
this.width = width;
}

public int getWidth(){
return width;
}

public void setHeight(int height){
this.height = height;
}

public int getHeight(){
return height;
}

public static void main(String[] args){

TestS t = new TestS();
t.setWidth(99);
t.setHeight(88);
FileOutputStream fos = null;
ObjectOutputStream oos = null;

try{
fos = new FileOutputStream("tests.serializable");