Acolor class has three public, integer -returning accessor methods : getred, getgreen, and getblue, and three protected, void-returning mutator methods : setred, setgreen, setblue, each of which accepts an integer parameter and assigns it to the corresponding color component .

the class , alphachannelcolor-- a subclass of color-- has an integer instance variable , alpha, containing the alpha channel value , representing the degree of transparency of the color. alphachannelcolor also has a method named dissolve (void-returning, and no parameters ), that causes the color to fade a bit . it does this by incrementing (by 1) all three color components (using the above accessor and mutator methods ) as well as the alpha component value .

write the dissolve method .