package file_op;import java.io.File;public class file_list {		static int n =0;	/**	 * @param args	 */	public static void main(String[] args) {				String ifile = "D:\\";		System.out.println(ifile);		list(ifile);	}		public static void list(String sfile){				n++;		File f = new File(sfile);		File[] l = f.listFiles();		for (int i=0; i<l.length; i++){			for(int j=0; j<n; j++){				System.out.print("   ");			}			if (l[i].isFile()){								System.out.println(l[i].getName());			}			else if (l[i].isDirectory()){				System.out.println( l[i].getName() + ‘\\‘);				list(l[i].getAbsolutePath());			}		}		n--;			}}