Is there any bad thing about using enum?

Answer 1

No, you normally use it when you have a mode variable for a method. the only problem is that every enum is a own class and it cant extend any classes. But you can still store objects in enums:

public enum SomePoints{POINT1(2,3),POINT2 (1,5);
private Point point;
private SomePoints(int x,int y){
this.point=new Point (x,y);}
public Point get (){return point;
}
}

To get POINT1 use Point p=SomePoints.POINT1.get ();

so theres nothing wrong with using enums,
its a smart way to store constants

I hope that this was correct and that i could explain it understandable in my poor English

Greetings