Java$-$ write and test a class of models a ball that bounces in a given direction, a ball bounces along the $x$ axis between a wall at $0$ and another wall at a

given distance. the move method advances its position by one unit when it reaches either wall it changes

direction.

public class Ball $\{$

$//$instance variables

$/*$your code goes here$*/$

$/**$constructs a ball at position $0$ traveling east. @param rightWall the position if the wall to the right$**/$

public Ball$($int rightWall$)$

$\{/*$your code goes here$*/\}$

$/**$moves the ball$**/$

public void move$()$

$\{/*$your code goes here$*/\}$

$/**$ gets the current position. @return the current position$**/$

public int getPosition$()$

$\{/*$your code goes here$*/\}$

$\}$