Java read all files in a folder

Java How to list all files in a directory:

/**
 * @author lautturi.com
 * Java example:check folder for files
 */

import java.util.*;
import java.io.File;

public class Lautturi {
	
	// Displays files in the specified directory and all subdirectories.
	public static void listFilesForFolder(final File folder) {
	    for (final File fileEntry : folder.listFiles()) {
	        if (fileEntry.isDirectory()) {
	            listFilesForFolder(fileEntry); // find the files in subdirectory
	        } else {
	            System.out.println(fileEntry.getName());
	        }
	    }
	}
	
	public static void main(String[] args) {

		// final File folder = new File("/home/lautturi");
		
		final File folder = new File("F:\\temp");
		listFilesForFolder(folder);

	}
}