But now you need Song objects, not just simple Strings

Now your boss wants actual Song class instances in the list, not just Strings, so that each Song can have more data. The new jukebox device outputs more information, so this time the file will have four pieces (tokens) instead of just two.

The Song class is really simple, with only one interesting feature—the overridden toString() method. Remember, the toString() method is defined in class Object, so every class in Java inherits the method. And since the toString() method is called on an object when it’s printed (System.out.println(anObject)), you should override it to print something more readable than the default unique identifier code. When you print a list, the toString() method will be called on each object.