public class CDPlayerTest {

    public static void main (String [] args) {
	String beatles1 = new String(
	   "It's been a hard day's night, and I been working like a dog\n" + 
	   "It's been a hard day's night, I should be sleeping like a log\n" +
           "But when I get home to you I'll find the things that you do\n" +
           "Will make me feel alright");
	String beatles2 = new String(
	   "Ah, look at all the lonely people\n" +
	   "Ah, look at all the lonely people\n\n" +
	   "Eleanor Rigby picks up the rice in the church " + 
	   "where a wedding has been\n" + 
	   "Lives in a dream\n" + 
	   "Waits at the window, wearing the face that she keeps " + 
	   "in a jar by the door\n" + 
	   "Who is it for?");
	String beatles3 = new String(
	   "In the town where I was born\n" + 
	   "Lived a man who sailed to sea\n" + 
	   "And he told us of his life\n" + 
	   "In the land of submarines");	
		 
	String thedoors1 = new String(
	   "People are strange when you're a stranger\n" + 
	   "Faces look ugly when you're alone\n" + 
	   "Women seem wicked when you're unwanted\n" + 
	   "Streets are uneven when you're down\n");
	String thedoors2 = new String(
           "Carry me Caravan take me away\n" +
	   "Take me to Portugal, take me to Spain\n" + 
	   "Andalusia with fields full of grain\n" +
	   "I have to see you again and again\n" +
	   "Take me, Spanish Caravan\n" + 
	   "Yes, I know you can");

	String [] songs = new String[3];
	songs[0] = beatles1;
	songs[1] = beatles2;
	songs[2] = beatles3;
	String name = new String("The Beatles");
	System.out.println(songs[0]);
	CD beatles = new CD(name,songs);
	System.out.println(songs[0]);
	System.out.println(beatles);

	songs = new String[2];
	songs[0] = thedoors1;
	songs[1] = thedoors2;
	CD thedoors = new CD("The Doors",songs);
	System.out.println(thedoors);
	System.out.println(thedoors.getCDName());
	System.out.println("The number of songs is " + thedoors.getNumSongs());
	//System.out.println(thedoors.getSong(1));
	
	CDPlayer myplayer = new CDPlayer();
	myplayer.putCD(beatles);
	System.out.println(myplayer);
	myplayer.play(2);
	System.out.println(myplayer);
	myplayer.play(2);
	System.out.println(myplayer);
	myplayer.eject();
	myplayer.putCD(thedoors);
	myplayer.play(2);
    }
}

class CD {
       private String CDname;
       private String [] CDsongs;
       
       public CD(String newName, String [] newSongs) {
	       	CDname = newName;
		int size = newSongs.length;
		CDsongs = new String[size];
		for (int i = 0; i < size; i++) {
			CDsongs[i] = newSongs[i];
		}		
       }
       
       public String toString() {
	       return CDname + ", " + CDsongs.length + " songs.";
       }
       
       // getCDName
       public String getCDName() {
	       return CDname;
       }
       
       // getNumSong
       public int getNumSongs() {
	       return CDsongs.length;
       }
       
       // getSong(int)
       public String getSong(int i) {
       // returns the song given a song number
       // if i is larger than the last valid song
       // index, the string "End of CD" gets returned
	       if (i < CDsongs.length)
		       return CDsongs [i];
	       else
		       return "End of CD";
       }
}

class CDPlayer {
       private CD cd; // null indicates that there is no cd
       private int song_num; // the current song number
       
       public CDPlayer() {
	       	// do nothing -- default values are OK
       }
       
       public void play(int i) {
       // plays the specified number of songs or until the end of
       // the cd if there is not enough songs on the cd
	       // handle the shorter case first:
	       if (cd == null){
		       System.out.println("Please put in a cd");
		       return; // quit the method
	       }

	       // don't need 'else' since the 'if' case ends 
	       // with 'return'
	       int x = i + song_num;
	       for (int j = song_num; (j < x) && (j < cd.getNumSongs()); j++){
	       System.out.println(cd.getSong(j));
	       ++song_num;
	       } 
	       if (song_num == cd.getNumSongs())
		       System.out.println("End of CD");
       }
       
       public String toString() {
       // prints the cd name and the current song number.
       // if there is no CD, prints the message
       // "There is no CD in the player."
	       if (cd != null){
	       String s = new String(cd.getCDName() + " " + song_num);
	       return s;
	       }
	       else
		       return "There is no CD in the player.";
       }
       
       public void putCD(CD c) {
	       if (cd != null)
		       System.out.println("Please eject current CD first");
	       else 
		       cd = c;
       }
       
       // the method returns the cd currently in the player and
       // resets the player to the empty state. 
       // If no cd is in the player, the method returns null
       public CD eject() {
               // store the current cd value before setting cd to null
	       CD c = cd;
	       cd = null;
	       song_num = 0;
	       return c;
       }
}