I'm having trouble understanding

Implement the Speaker interface: public interface Speaker { public void speak(); public void announce(String str); } Then, have three classes that implement Speaker in various ways:

• SpeakerOfTheHouse: speak method prints "I am Speaker of the House.", and the announce method takes the name of a bill in the form of a string and prints it in the sentence "The [bill] has passed!"
• SportsAnnouncer: speak method prints "Goal!", and the announce method takes the name of a team in the form of a string and prints the sentence "The [team] have scored a goal!"
• Actor: speak method prints "I've been nominated for three Academy Awards.", and the announce method takes the name of a movie in the form of a string and prints the sentence, "I'm currently staring in [movie]."

Have a driver class, and in the main method, prompt the user to enter three Strings -- the name of a bill, the name of a sports team, and the name of a movie. Then, have an object from each of the classes described above and call the speak and announce methods of each object, using the strings provided by the user.

Sample Run looks like

Enterthenameofabill:Tariffof1816 Enterthenameofasportsteam:NewYorkRangers Enterthenameofamovie:TheDevilWearsPrada IamSpeakeroftheHouse. TheTariffof1816haspassed! Goal! TheNewYorkRangershavescoredagoal! I'vebeennominatedfor3AcademyAwards. I'mcurrentlystarringinTheDevilWearsPrada.