public Shape getShape(String shapeType){
		if (shapeType==null){
			return null;
		}
		if(shapeType.equalsIgnoreCase("RECTANGLE")){
			return new Rectangle();
		}
		if(shapeType.equalsIgnoreCase("SQUARE")){
			return new Square();
		}
		if(shapeType.equalsIgnoreCase("CIRCLE")){
			return new Circle();
		}
		return null;
	}