java-Java中從文件中讀取ArrayList報錯

Java中從文件中讀取ArrayList報錯

java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)

代碼
import java.io.File;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;

public class Data {
private File file=new File("e:"+File.separator+"message.txt");
private ObjectInputStream ois;
private ObjectOutputStream oos;
public ArrayList read() throws FileNotFoundException, IOException{
ArrayList list=new ArrayList();
ois=new ObjectInputStream(new FileInputStream(file));

    try {



        list=(ArrayList<Message>) ois.readObject();//報錯的位置


        ois.close();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return list;
}
public void write(ArrayList<Message> list){
    try {
        oos=new ObjectOutputStream(new FileOutputStream(file));

        oos.writeObject(list);
        oos.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

}

最佳回答：

ois=new ObjectInputStream(new FileInputStream(file));
這一句返回值可能為空，或者是下一句無法讀到東西；
強轉崩潰；