import java.awt.*;

public class Lab6
{
	/**
	 * Notice the use of polymorphism with the method call. We can't be sure what
	 * type of objects will be passed in, but we don't have to care. Every object
	 * in Java has an equals() and toString() method, which are all that this
	 * method requires. With dynamic binding, the equals() method of MyRectangle,
	 * MyColoredRectangle1, or MyColoredRectangle2 will be executed depending on
	 * the actual type of the lhs object.
	 * 
	 * @param lhs
	 *          left hand side (lhs) of "equals sign"
	 * @param rhs
	 *          right hand side (rhs) of "equals sign"
	 */
	public static void testEquality(Object lhs, Object rhs)
	{
		if(lhs.equals(rhs))
			System.out.println(lhs + "      EQUALS     " + rhs);
		else
			System.out.println(lhs + " is NOT EQUAL to " + rhs);
	}
	
	public static String forColor(Color c)
	{
		if(c == Color.black)			return "black";
		else if(c == Color.blue)	return "blue";
		else if(c == Color.cyan)	return "cyan";
		else if(c == Color.white)	return "white";
		else if(c == Color.gray)	return "gray";
		else if(c == Color.green)	return "green";
		else if(c == Color.orange)	return "orange";
		else if(c == Color.yellow)	return "yellow";
		else if(c == Color.red)	return "red";
		else if(c == Color.magenta)	return "magenta";
		return "unknown";
	}
	
	public static void main(String[] args)
	{
		MyRectangle R0;
		MyColoredRectangle1 R1;
		MyColoredRectangle2 R2;
		
		R0 = new MyRectangle(50, 50, 70, 46);
		R1 = new MyColoredRectangle1(80, 20, 70, 46, Color.yellow);
		R2 = new MyColoredRectangle2(10, 10, 70, 46, Color.yellow);
		
		System.out.println("R0: " + R0);
		System.out.println("R1: " + R1);
		System.out.println("R2: " + R2);
		
		testEquality(R0, R1);
		testEquality(R1, R0);
		System.out.println();
		testEquality(R0, R2);
		testEquality(R2, R0);
		System.out.println();
		testEquality(R1, R2);
		testEquality(new MyColoredRectangle1(10, 11, 70, 46, Color.yellow), R1);
		testEquality(R2, new MyColoredRectangle2(10, 10, 70, 46, Color.green));
		
		R1.setSize(80, 100);
		System.out.println();
		testEquality(R0, R1);
		testEquality(R1, R0);
	}
}