hey guys, i am working with java program. so i did some sub andsuper classes and just start learning abstract classes. in thisproject im building my program as given from UML diagram. i do haveshape.java also Circle.java, Rectangle.java as well as main classShapeClient.java. all those classes are working. but right now i amtrying to add Triangle.java which will not calculate area but willprint true or false if sides are equal or not so i am usingisEquilateral method. i have Triangle.java and it compiles and itis abstract class. however when i am trying to use it in theShapeClient.java i have error
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