[RESOLVED] clear text in a file

[Justa Lol]

i need to know how to find one line in a file and delete that line only.

like if i type "text" in a textfield then i click a button and it finds the line in a file where it says "text" and after that clears only that line.

[ComputerJy]

This code should do it:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class Test {
	public static void main(final String[] args) throws IOException {
		final Scanner scanner = new Scanner(System.in);
		String filePath = null;
		do {
			filePath = scanner.nextLine();
		} while (new File(filePath).exists());
		final String lineToDelete = scanner.nextLine();
		final BufferedReader reader = new BufferedReader(new FileReader(
				filePath));
		final StringBuffer sb = new StringBuffer();
		while (reader.ready()) {
			final String currentLine = reader.readLine();
			if (!currentLine.equals(lineToDelete)) {
				sb.append(reader.readLine());
				sb.append(System.getProperty("line.separator"));
			}
		}
		reader.close();
		final FileWriter writer = new FileWriter(filePath);
		writer.write(sb.toString());
		writer.close();
	}
}