public class Demo4
{
   public static void main(String[] args)
   {
        Circle[] myList = new Circle[4]; // Array of Circles objs
        myList[0] = new Circle("red", 2);
        myList[1] = new Circle("blue", 1);
        myList[2] = new Circle("white", 5);
        myList[3] = new Circle("black", 3);
 
        System.out.println("Before sorting:");
        for ( int i = 0; i < myList.length; i++)
           System.out.println(myList[i]);
        System.out.println();

	// ******************************************************************
        // We can pass an array of Rectangle to selectionSort
	// because a Rectangle can fulfill requests made to a GeometricObject
	// ******************************************************************
        Sort.selectionSort(myList);

        System.out.println("After sorting:");
        for ( int i = 0; i < myList.length; i++)
           System.out.println(myList[i]);
   }
}