OpenClosedPrincipleproblem/CircleToSquareConverter.java

public class CircleToSquareConverter implements ShapeConverter<Circle, Square> {
    @Override
    public Square convert(Circle source) {
        if (!canConvert(source)) {
            throw new IllegalArgumentException("Cannot convert null circle");
        }
        
        // Calculate side length of square with equal area to the circle
        double circleArea = source.calculateArea();
        double squareSide = Math.sqrt(circleArea);
        
        // Create square with the same color as the circle
        return new Square(squareSide, source.getColor());
    }
    
    @Override
    public boolean canConvert(Circle source) {
        return source != null && source.getRadius() > 0;
    }
    
    @Override
    public String getConversionDescription() {
        return "Converts a circle to a square with equal area and same color";
    }
}