Java tutorial
import java.io.BufferedReader; import java.io.File; import java.io.FileReader; public class Main { public static void main(String args[]) throws Exception { File file = new File("."); if (file.isDirectory()) { String[] files = file.list(); for (int i = 0; i < files.length; i++) System.out.println(files[i]); } else { FileReader fr = new FileReader(file); BufferedReader in = new BufferedReader(fr); String line; while ((line = in.readLine()) != null) System.out.println(line); } } }