java code $//$ DO NOT MODIFY THE INSTANCE VARIABLESprivate int width;$//$ end instance variables$////$ representing the width and height, respectively.$//$ equal to these values.$//2.)$ Define a "getter" named getWidth, which returns$////$ the height of the rectangle.$//4.)$ Define a "setter" named setWidth, which takes$//$ rectangle's width to that value.$//5.)$ Define a "setter" named setHeight, which$//$ the rectangle's height to that value$//6.)$ Define a toString method, which returns$//$ As an example, if the width of the rectangle is$//$ return the String:$////$ returns the perimeter of the rectangle.$//$ TODO $-$ write your code below this comment.

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