Message in a Bottle #SongsInCode

This afternoon I did something extraordinarily productive and created an extended #SongsInCode rendition of Message in a Bottle that compiles. Now all somebody in this distant future needs to do is create a new class to fetch Sting's bottle and read his message!
Sting.java
public class Sting {
public static void main(String[] args) {
Bottle oceanBottle = new Bottle("SOS!");
}
}
Bottle.java
public class Bottle {
String message = "";
boolean opened = false;
public Bottle(String message) {
this.message = message;
}
public void pullCork() {
opened = true;
}
public String getMessage() throws NotOpenException {
if (opened)
return message;
else
throw new NotOpenException();
}
}
NotOpenException.java
public class NotOpenException extends Throwable {
public NotOpenException() {
super("You haven't opened the bottle yet!");
}
}
