复杂序列化类java /没有错误弹出

Question

当我在类中执行方法时，我的应用程序崩溃了。请告诉我什么是错误或优化这个课程的方法。它运行时不会创建任何错误消息。所以我不知道什么是错的。我已经尝试了所有我知道的并且能够找到其他工作的评论。

＆＃13;

＆＃13;

package main;

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.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Scanner;

public class List {

	public static void saveList(ArrayList<String> x){
		Date date = Calendar.getInstance().getTime();
		DateFormat ft= new SimpleDateFormat("W-MM-yyyy");
		String fileName= ft.format(date)+ ".bin";
		ObjectOutputStream os;
		try {
			os = new ObjectOutputStream(new FileOutputStream(fileName));
			os.writeObject(loadList().addAll(x));
			os.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}	
		
	}
	
	
	public static ArrayList<String> loadList() throws IOException{
		Date date = Calendar.getInstance().getTime();
		DateFormat ft= new SimpleDateFormat("W-MM-yyyy");
		String fileName= ft.format(date)+ ".bin";
		ArrayList<String> array= new ArrayList<>(); 
		
		ObjectOutputStream on;
		on = new ObjectOutputStream(new FileOutputStream("Names.bin"));
		on.writeUTF(fileName);
		on.close();
			
		ObjectInputStream or;
		try {
			or = new ObjectInputStream(new FileInputStream("Names.bin"));
			String hi= new String(or.readUTF());
			or.close();
			or= new ObjectInputStream(new FileInputStream(hi));
			Scanner reader= new Scanner(System.in);
			int in= reader.nextInt();
			while(in!= 0){
				array.add(Integer.toString(in));
				in= reader.nextInt();
			}
			reader.close();
			or.close();
		} catch (FileNotFoundException e) {
			System.out.println("File Not Found");
			}
		return array;
	}
}

＆＃13;

＆＃13;

＆＃13;