Writing a text file in a runnable jar file

[vjames]

Is it possible to write to an existing text file in a jar. I managed to read from it with getResource() but I am stuck trying to write to it, it gives me a file not found exception.

Thanks

[stultuske]

yes, that is possible ...
might be easier to spot your mistakes if you post your code.

[vjames]

This class is part of a game I'm making. It is used for I/O of the game records

I am having problem with the method saveRecords() after creating the runnable jar with eclipse, is there another way to write to this file?

package Data;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.net.URL;
import java.util.Collections;
import java.util.Scanner;
import java.util.Vector;

public class Records
{
	public enum Difficulty
	{
		BEGINNER, INTERMEDIATE, EXPERT
	};

	private Scanner in;
	private PrintWriter out;
	File f;
	private Vector<String> b, i, e;

	public Records()
	{
		b = new Vector<String>();
		i = new Vector<String>();
		e = new Vector<String>();



		URL url;
		try
		{
			url = this.getClass().getResource("beginner.txt");
			f = new File(url.getFile());
		} catch (Exception e1)
		{
			System.out.println("File not found");
		}

		try
		{
			in = new Scanner(this.getClass().getResourceAsStream("beginner.txt"));
		}
		catch(NullPointerException e)
		{
			System.out.println("Stream not foound");
		}


		get();

	}

	private void get()
	{
		Difficulty current = null;

		while (in.hasNextLine())
		{

			String n = in.nextLine();

			if (n == "")
				continue;

			if (n.equals("b"))
			{
				current = Difficulty.BEGINNER;
				continue;
			}
			else if (n.equals("i"))
			{
				current = Difficulty.INTERMEDIATE;
				continue;
			}
			else if (n.equals("e"))
			{
				current = Difficulty.EXPERT;
				continue;
			}

			
			if (current == Difficulty.BEGINNER)
			{
				b.add(n);

			}
			else if (current == Difficulty.INTERMEDIATE)
				i.add(n);
			else if (current == Difficulty.EXPERT)
				e.add(n);

		}

		sortRecords();
	}

	public void addRecord(Difficulty current, int n)
	{
		if (current == Difficulty.BEGINNER)
			b.add("" + n);
		else if (current == Difficulty.INTERMEDIATE)
			i.add("" + n);
		else if (current == Difficulty.EXPERT)
			e.add("" + n);

		sortRecords();
	}

	public Vector<String> getRecords(Difficulty d)
	{
		Vector<String> c = null;
		if (d == Difficulty.BEGINNER)
			c = b;
		else if (d == Difficulty.INTERMEDIATE)
			c = i;
		else if (d == Difficulty.EXPERT)
			c = e;
		return c;
	}

	public void saveRecords() 
	{

		try
		{
			out = new PrintWriter(f) ;
		} catch (FileNotFoundException e1)
		{
			System.out.println("file not found");
			e1.printStackTrace();
		} 
		out.println("b");

		for (int i = 0; i < b.size(); i++)
			out.println(b.get(i));

		out.println("i");
		for (int j = 0; j < i.size(); j++)
			out.println(i.get(j));
		out.println("e");
		for (int i = 0; i < e.size(); i++)
			out.println(e.get(i));

		out.flush();
		out.close();
	}

	private void sortRecords()
	{
		Collections.sort(b);
		Collections.sort(i);
		Collections.sort(e);
	}

	public void removeRecords(Difficulty d, int numberOfRecords)
	{
		Vector<String> c = null;
		if (d == Difficulty.BEGINNER)
			c = b;
		else if (d == Difficulty.INTERMEDIATE)
			c = i;
		else if (d == Difficulty.EXPERT)
			c = e;

		for (int i = 0; i < numberOfRecords; i++)
			c.remove(c.size() - 1);

	}

}