Editing a text-file stored inside a JAR

Newbie & Debugging Questions
#1

Ok, I have a .txt file stored inside a folder “res” inside my JAR-file. I can read from that file with the following method.


	public String[] loadText(String path){
		InputStream mySettingsStream = FileLoader.class.getResourceAsStream("/res/"+path);
		String mySettingsString = "null";
		StringBuilder build = new StringBuilder();
		int i = 0;
		try {
			while((i = mySettingsStream.read()) != -1) {
				build.append((char)i);
			}
			mySettingsString = build.toString();
			return mySettingsString.split("\r\n");
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
	}

However, I want to be able to store changes I’ve made to the data in that file and I can’t figure out how to do that. I tried using an OutputStreamWriter with a URL (as you can see below) but it caused a “java.net.UnknownServiceException: protocol doesn’t support output” so I clearly need something else.
If possible I want to even be able to create a new .txt file at the location in case one with the name from path doesn’t exist.


	public void write(String path, String[] lines){
		if(path==null || lines==null){return;}
		URL url = FileLoader.class.getResource("/res/" + path);
		try {
			URLConnection connection = url.openConnection();
			connection.setDoOutput(true);
			OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
			for(int i = 0; i < lines.length; i++){
				out.write(lines[i]);
			}
			out.close();
		} catch (IOException e) {
			System.err.println("Failed to write to file");
			e.printStackTrace();
		}
	}

Anyone have any ideas?
I know that it might not be the best idea to mess around with changing and creating files inside a JAR file but it’d be great if I could do it safely. At the very least I’d like to have the ability to edit text files in there.