java中用readObject（）方法，用while遍历时报EOFException

Question

package sequenceDamo;

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

public class SequenceDemo {

public static void main(String[] args) throws IOException, ClassNotFoundException {
    File s=new File("d:/Mydoc/123.txt");
    Students zhan=new Students("张三",21,true);
    Students li=new Students("李三",22,true);
    Students liu=new Students("刘三",20,true); 
    ObjectOutputStream dos=new ObjectOutputStream(new FileOutputStream(s));
    dos.writeObject(zhan);
    dos.writeObject(li);
    dos.writeObject(liu);
    System.out.println("序列化完成");
    dos.flush();
    dos.close();
    ObjectInputStream fos=new ObjectInputStream(new FileInputStream(s));
    Students m=null;
    try{
        while((m=(Students)fos.readObject())!=null){
        System.out.println("名字："+m.getName()+
                "\t年龄："+m.getAge()+"\t性别："+
                (m.isGender()?"男":"女"));    
    }
    }catch(EOFException e){
        System.out.println("输出结束");
    }
    fos.close();
}

}
运行结果

Answer 1

readObject这方法没办法判断是否还有对象可读，所以要么你捕获异常自己处理，
要么自己弄一个结束对象比如null，来判断是否还有可读的对象