Trying to create a version of the card game SET in Java, and I need to implement a isSet () : boolean to determine if the cards dealt are a SET. The three cards have four attributes number, shading, color, and shape and each attribute assumes one of three possible values,Number: { One, Two, Three } Shading: { Solid, Striped, Open } Color: { Red, Green, Purple } Shape: { Ovals, Squiggles, Diamonds }. It is defined as a set if with respect to each of the four attributes, the cards are either all the same or all dierent. For Example: First Card is one green oval with a solid shading, Second Card has two green ovals with solid shading and the Third Card has three green ovals with solid shading, all cards have the same shape (ovals), the same color (green), and the same shading (solid), and each card has a dierent number of ovals. If that Third Card was three green squiggles with solid shading it wouldn't be a set because the shape wasn't an oval. I have the Triad(Card, Card, Card) just having trouble with the isSet () : boolean part of my code.

Triad -cards:CardD +Triad(Card,Card,Card) +isSet0:boolean +toString0:String