code: import java.io.File;
  public class FileExistsTest {
     public static boolean isFileExists(String filename) {
         boolean exists = new File(filename).exists();
         return exists;
     }
     public static void test(String type, String filename) {
         System.out.println("The following " + type + " called " + filename +
             (isFileExists(filename) ? " exists." : " not exists.")
         );
     }
     public static void main(String args[]) {
          test("file", "input.txt");
          test("file", File.separator + "input.txt");
          test("directory", "docs");
          test("directory", File.separator + "docs" + File.separator);
     }
  }
  