import java.io.*;
import java.util.Scanner;

class Main {
  public static void main(String[] args) throws FileNotFoundException {

    Scanner sFile = new Scanner(new File("a.txt")); // this file contains "apple orange"
    Scanner sKeyboard = new Scanner(System.in); // keyboard
    Scanner sString = new Scanner("Lecture(3hrs) and lab(2hrs)"); // the string
   
    String s1, s2, s3;
    s1 = sFile.next();
    s2 = sKeyboard.next();
    s3 = sString.next();

    System.out.println("all: " + s1 + " " + s2 + " " + s3);
    System.out.println("-----------");
    while (sFile.hasNext()) {
      System.out.println(sFile.next());
    }
    System.out.println("-----------");
    while (sKeyboard.hasNext()) {  // Need ^Z<enter> to stop!!!!
      System.out.println(sKeyboard.next());
    }
    System.out.println("-----------");
    while (sString.hasNext()) {
      System.out.println(sString.next());
    }

    sFile.close();    sKeyboard.close();    sString.close();
  }
}

/*
mock test midterm exam
all: apple mock Lecture(2hrs)  
-----------
orange
-----------
test
midterm
exam
-----------
and
lab(2hrs)
 */