1. Write an interface called Moveable with four void methods moveUp(), moveDown(), moveLeft() and moveRight().

2. Write a class called MoveablePoint that implements the Moveable interface above. This class contains two int fields x and y. Write the constructors, accessors and mutators, toString method and an equals (inherited from Object class) method that compares the states of its objects.

3. Write another class called MoveableCircle that extends the MoveablePoint. The x and y fields represent the center of the circle and has an int variable called radius. Write the constructors, accessors and mutators, toString method, equals method and a method called area that print the area of the circle.

4. Write a client class that creates the two objects of MoveablePoint and two objects of MoveableCircle class. Test the moveUp(), moveDown(), moveLeft(), moveRight() methods for each object and print the object with each move. Also use the equals method to compare different objects and print out the results of the comparision. Call the area method on the objects of class MoveableCircle.

> Moveable MoveableCircle