Types: Primitive Types & Classes

Types of Methods

• Constructors

      Clock myClock = new Clock();
      Fish fish1 = new Fish();
      Greeter rey = new Greeter();

• Do-Something Methods

      fish1.moveForward();
      fish1.turnAround();
      rey.sayHello();

• Return-Something Methods

      int hr = myClock.getHour();
      int min = myClock.getMinute();
      System.out.println("Time is " + myClock.getHour() +
          ":" + myClock.getMinute());

• Methods (or Constructors) that Need Information

      myClock.setHour(10);
      rey.sayThis("Hi, how are you?");
      int fahrenheit = converter.convertFromCelsius(20);

Key question: For any class, how do we know what methods are available, whether they are Do-Something or Return-Something methods, and whether they need information passed to them?

Read the Class Documentation!