Java Exercise3. Movable PointA. Write the classes as shown in the following class diagram. Movable is an interface and MovablePoint implements it. ‘~’ means package access but you can just make it public. (pic1.png)B. Now add the class MovableCircle which also implements the interface Movable and is composed of a MovablePoint. Add a tester that allows the user to enter the radius and center of a MovableCircle. After that ask the user if they want (yes/no) to move the circle and how they want to move it (up, down, left, right). Everytime the circle is moved, you should output its changed position. If the user says “no” the program ends. (pic2.png) Movable«interface>>+moveUp():void+moveDown ():void+moveleft():void+moveright():voidabstract methodsimplementsMovablePoint~x:intny:int~xSpeed:int~ySpeed:intdenotes package access"(x, y) speed=(x, y)"+MovablePoint (x:int,y:int,xSpeed:int, ySpeed:jnt)+tostring():String.+moveUp():void+moveDown (): void+moveleft():void+moveRight():voidmoveUp:y -- ySpeedmoveDown: y += ySpeed%3Dу +аx -- xSpeedmoveRight: x += xSpeedmoveleft: «interface>> Movable+moveUp():void+moveDown (): void+moveleft():void+moveRight():voidimplements 4MovablePointMovableCircle~x:int1-radius:intny:int-xSpeed:int~ySpeed:int-center:MovablePoint+MovablePoint(x:int,y:int,xSpeed:int, ySpeed:int)+toString():String+moveUp(): void+moveDown (): void+moveleft():void+moveRight():voidcomposes +MovableCircle(x:int,y:intxSpeed:int, ySpeed:int,radius:int)+tostring():String+moveUp(): void+moveDown (): void+moveleft():void+moveRight():void

Movable.java public interface Movable { void moveUP(); void moveDown(); void moveLeft();…

Answered: Movable «interface>> +moveUp(): void…

Database System Concepts

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ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

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Java Exercise

3. Movable Point
A. Write the classes as shown in the following class diagram. Movable is an interface and MovablePoint implements it. ‘~’ means package access but you can just make it public. (pic1.png)

B. Now add the class MovableCircle which also implements the interface Movable and is composed of a MovablePoint. Add a tester that allows the user to enter the radius and center of a MovableCircle. After that ask the user if they want (yes/no) to move the circle and how they want to move it (up, down, left, right). Everytime the circle is moved, you should output its changed position. If the user says “no” the program ends. (pic2.png)

Movable
«interface>>
+moveUp():void
+moveDown ():void
+moveleft():void
+moveright():void
abstract methods
implements
MovablePoint
~x:int
ny:int
~xSpeed:int
~ySpeed:int
denotes package access
"(x, y) speed=(x, y)"
+MovablePoint (x:int,y:int,
xSpeed:int, ySpeed:jnt)
+tostring():String.
+moveUp():void
+moveDown (): void
+moveleft():void
+moveRight():void
moveUp:
y -- ySpeed
moveDown: y += ySpeed
%3D
у +а
x -- xSpeed
moveRight: x += xSpeed
moveleft:

«interface>> Movable
+moveUp():void
+moveDown (): void
+moveleft():void
+moveRight():void
implements 4
MovablePoint
MovableCircle
~x:int
1
-radius:int
ny:int
-xSpeed:int
~ySpeed:int
-center:MovablePoint
+MovablePoint(x:int,y:int,
xSpeed:int, ySpeed:int)
+toString():String
+moveUp(): void
+moveDown (): void
+moveleft():void
+moveRight():void
composes +MovableCircle(x:int,y:int
xSpeed:int, ySpeed:int,
radius:int)
+tostring():String
+moveUp(): void
+moveDown (): void
+moveleft():void
+moveRight():void

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