데이터를 불러오는걸 계속 실패합니다

마지막 강의를 해봤는데 저장은 정상적으로 되는데 데이터 불러오기는 실패하네요

혼자서는 어떤부분에서 문제가 있는지 모르겠습니다

package calendar;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;

public class cla_pro_1 {
	private final static int[] arr = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	private final static int[] larr = { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
private static final String savefile="cal_p.dat";
	
	public boolean isLeepYear(int year) {
		if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0))
			return true;
		else
			return false;
	}
	public int arr(int year, int mon) {
		if (isLeepYear(year)) {
			return larr[mon];
		} else {
			return arr[mon];
		}
	}


	
	

	public void cal_print(int year, int mon) {
	

		System.out.printf("    %3d년  %3d월\n",year,mon);
		System.out.println(" su mo tu we th fr sa");
		System.out.println("----------------------");
		
		if(mon<=2) {mon=mon+12;year=year-1;}
		int y=year%100;
		int c=(year-y)/100;
		int z=((21*c/4)+(5*y/4)+(26*(mon+1)/10))%7;
		int maxday=arr(year,mon);
		for(int b=0;b<z;b++) {
			System.out.print("   ");
		}
		for(int a=1;a<=maxday;a++) {
			System.out.printf("%3d",a);
			if ((a+z)%7==0) {
				System.out.println();
			
		}}System.out.println();
		
	}
	
		
		private static HashMap<Date,String>hm;
		public cla_pro_1() {
			hm=new HashMap<Date,String>();
			File f=new File(savefile);
			if(!f.exists())
				return;
try {
	Scanner s=new Scanner(f);
	while(s.hasNext()){
		String line=s.nextLine();
		String[] words=line.split(",");
		String date=words[0];
		String plan=words[1];
		PlanItem p=new PlanItem(date, plan);
	}
} catch (FileNotFoundException e) {

	e.printStackTrace();
}
		}
	
	public void plan(String strdate, String plan) throws ParseException {
		PlanItem p=new PlanItem(strdate,plan);
		SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
		Date date=formatter.parse(strdate);
			hm.put(date, plan);
				System.out.println("날짜:"+strdate+" 일정:"+plan);
			File f=new File(savefile);
			
			String item=p.savestring();
			try {
				FileWriter fw=new FileWriter(f, true);
				fw.write(item);
				fw.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
	}
	public String searchPlan(String strdate) throws ParseException {
		Date date=new SimpleDateFormat("yyyy-MM-dd").parse(strdate);
		String plan=hm.get(date);
		return plan;
		
	}
	
		
		
	}

package calendar;

import java.text.ParseException;
import java.util.Date;
import java.util.Scanner;

public class cal_pro_2 {

	
	public static void printmenu() {
		System.out.println("+-------------+");
		System.out.println("| 1. 일정등록");
		System.out.println("| 2. 일정검색");
		System.out.println("| 3. 달력보기");
		System.out.println("| h. 도움말  q.종료");
		System.out.println("+-------------+");
	}
			
		
		
	
	public void runprompt() throws ParseException {
		cal_pro_2 cp2=new cal_pro_2();
		cla_pro_1 cp1=new cla_pro_1();
		printmenu();
		boolean loop=true;
		while(loop) {
			System.out.println("명령(1,2,3,h,q)");
			System.out.print(">");
			Scanner sc=new Scanner(System.in);
			String cmd=sc.next();
			switch(cmd) {
			case "1": cp2.cal_1(sc, cp1);break;
			case "2": cp2.cal_2(sc, cp1);break;
			case "3": cp2.cal_print();break;
			case "h": cp2.help(sc);break;
			case "q": System.out.println("종료합니다");loop=false;
			}}}
	
	private void cal_2(Scanner sc,cla_pro_1 cp1) throws ParseException {
		System.out.println("[일정검색]");
		System.out.println("날짜를 입력하세요 yyyy-MM-dd");
		System.out.print(">");
		String strdate=sc.next();
		String plan=cp1.searchPlan(strdate);
		if(plan==null) {System.out.println("일정이 없습니다");
			}
		else {System.out.println(plan);}

		cp1.searchPlan(strdate);
	

		
	}




	private void help(Scanner sc) {
		System.out.println("도움말");
		System.out.println("번호를 입력하고 날짜를 바르게 입력해주세요");
		return;
		
		
	}




	private void cal_1(Scanner sc,cla_pro_1 cp1) throws ParseException {
		System.out.println("[일정입력]");
		System.out.println("날짜를 입력하세요 yyyy-MM-dd");
		System.out.print(">");
		String strdate=sc.next();
		String plan="";
		sc.nextLine();
		System.out.println("일정을 입력해주세요");
		System.out.print(">");
		plan=sc.nextLine();
		cp1.plan(strdate, plan);
		
		
		
		
	}




	public void cal_print() {
		while(true) {
			System.out.println("년도를 입력하세요");
			System.out.print(">");
			Scanner s=new Scanner(System.in);
			int year=s.nextInt();
			if(year==-1) {System.out.println("종료합니다");break;}
			System.out.println("월을 입력하세요");
			System.out.print(">");
			int mon=s.nextInt();
			if(mon==-1) {System.out.println("종료합니다");break;}
			else if(mon<1||mon>12) {System.out.println("잘못된입력입니다");continue;}
			
			cla_pro_1 cp=new cla_pro_1();
			cp.cal_print(year, mon);
			return;
	
		}
	}
public static void main(String[] args) throws ParseException {
	cal_pro_2 cp2=new cal_pro_2();
	cp2.runprompt();
}
}

package calendar;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class PlanItem {
		public Date planDate;
		public String detail;
		
		public static Date getDatefromString(String strdate) {
			Date date = null;
			try {
				date=new SimpleDateFormat("yyyy-MM-dd").parse(strdate);
			} catch (ParseException e) {
				// 이부분은 위에 simpleDateformat이 바르지 않게 입력됏을때의 오류값 출력이다
				e.printStackTrace();
			}
			return date;
		}
		
		public PlanItem(String date, String detail) {
			this.planDate=getDatefromString(date);
			
			this.detail=detail;
		}

		public Date getdate() {
			return planDate;
		}

		public String savestring() {
			SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
			String sdate=formatter.format(planDate);		
			return sdate.toString()+","+detail+"\n";
		}
}

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