import java.io.File;


public class DelDir {
	public static void toDel(String DuongDan){
		File TepTin = new File(DuongDan);
		if (TepTin.isFile()){
			TepTin.delete();
		}
		else {
		File[] NoiDung = TepTin.listFiles();	
		for (int i = 0; i < NoiDung.length; i++) {
			toDel(NoiDung[i].getAbsolutePath());
		}
		}
		TepTin.delete();
	}
	
	public static void main(String[] args) {
		String DuongDan = "D:\\Dir";
		toDel(DuongDan);
	}
}