Although the file that is getting this error is in my java project file, when I use print stack trace I get the java.nio.file.NoSuchFileException error. Does anyone maybe know why?

In my code I am writing to a file named savedata.txt which is the file getting the java.nio.file.NoSuchFileException error. Otherwise my code is also deleting from this file. In order to delete from that file, I have to use a new file, temp.txt, which I write everything except the line that is deleted into. temp.txt is not getting this error
this is done in 3 methods, the same thing in each method

import java.util.*;
import java.util.regex.Pattern;
import java.time.*;
import java.io.*;
import java.text.*;
import java.time.temporal.ChronoUnit;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.io.FileNotFoundException;

public class input{
public LocalDate date1;

  public input (LocalDate date1){
    this.date1=date1;
  }

  public void getSubject(){
    try{
      
      long count= Files.lines(Paths.get("savedata.txt")).count();
      Scanner scanner= new Scanner(System.in);
      System.out.println("When you are done entering homework, enter 'done' at subject");

      FileWriter savedata = new FileWriter("savedata.txt", true);
      PrintWriter writer = new PrintWriter(savedata);
       
       
      Homework homework1= new Homework("empty", "2024-08-24");
      

      System.out.println("Enter the subject of the homework");
      homework1.subject= scanner.nextLine();


      
      if(homework1.subject.equals("done")){
        
        return;
      }
        
      
      
      
    writer.println(homework1.subject);

      writer.close();
    }catch(Exception c){
      c.printStackTrace();
      System.out.println("did not work");
    }
  }

  public void getDate() throws ParseException{

    try{
      

     

      long count= Files.lines(Paths.get("savedata.txt")).count();
      Scanner scanner= new Scanner(System.in);
  
      Scanner readlines = new Scanner("savedata.txt");
    FileWriter savedata = new FileWriter("savedata.txt", true);
    PrintWriter writer = new PrintWriter(savedata);
    Homework homework1= new Homework("empty","2024-08-24" );

    //LocalDate.now()

    System.out.println("Enter the due date of the homework: YYYY-MM-DD");
    homework1.dueDate= scanner.nextLine();

    //LocalDate.parse
      
      while(homework1.dueDate!="done"){
        writer.println(homework1.dueDate);
        break;
      }
        
    while(homework1.dueDate.equals("done")){
      File oldfile = new File("savedata.txt");
      File newfile = new File("temp.txt");

      int line=0;
      String currentline;
      FileWriter fw= new FileWriter("temp.txt");
      BufferedWriter bw =new BufferedWriter(fw);
      PrintWriter pw= new PrintWriter(bw);

      FileReader fr= new FileReader("savedata.txt");
      BufferedReader br = new BufferedReader(fr);

      while((currentline=br.readLine())!=null){
        line++;
        if(count!=line){
          pw.println(currentline);
        }
      }

      pw.flush();
      pw.close();
      br.close();
      fw.close();
      bw.close();
      fr.close();

      oldfile.delete();
      File dump=new File("savedata.txt");
      newfile.renameTo(dump);
      
      break;
     }


       
       writer.close();
     

       
       
  }catch(Exception c){

  }

  
}

public void getArray(){
try{
  long count= Files.lines(Paths.get("savedata.txt")).count();
    Scanner scanner= new Scanner(System.in);
    FileWriter savedata = new FileWriter("savedata.txt", true);
   PrintWriter writer = new PrintWriter(savedata);
  Homework homework1= new Homework("empty", "2024-08-24");

  System.out.println("Enter parts of homework. Write done when done.");
     
    String finish="";

    while(finish.equals("done")){
      File oldfile = new File("savedata.txt");
      File newfile = new File("temp.txt");

      int line=0;
      String currentline;
      FileWriter fw= new FileWriter("temp.txt");
      BufferedWriter bw =new BufferedWriter(fw);
      PrintWriter pw= new PrintWriter(bw);

      FileReader fr= new FileReader("savedata.txt");
      BufferedReader br = new BufferedReader(fr);

      while((currentline=br.readLine())!=null){
        line++;
        if((count!=line)|| (count-1!=line)){
          pw.println(currentline);
        }
      }

      pw.flush();
      pw.close();
      br.close();
      fw.close();
      bw.close();
      fr.close();

      oldfile.delete();
      File dump=new File("savedata.txt");
      newfile.renameTo(dump);
      
      break;
    }
    while(!finish.equals("done")) {
      finish= scanner.nextLine();
      if(!finish.equals("done")) {
        parts newpart = new parts(finish);
        homework1.addPart(newpart);
      }
      }


       
      
      System.out.println(homework1.part);

      writer.println(homework1.part);
      

      writer.close();
    }catch(Exception c){

    }
}
}```