CS计算机代考程序代写 Java b’f9b8856a1d78ae80fb64a680a44e6eeb0336b5′

b’f9b8856a1d78ae80fb64a680a44e6eeb0336b5′

blob 1430�package programmingexample5;

import java.awt.Color;

public class ShapeColourAreaVisitor implements ShapeVisitor {

/*
*
* TODO In this class, you need to implement the required method(s), to answer
* the question.
*
* You also need to implement the following constructor and declare variables,
* if required.
*
*/
private double area;
private Color colour;

public ShapeColourAreaVisitor(Color colour) {
// initialise values
area = 0;
this.colour = colour;
}

public double getTotalArea() {
// TODO Implement this method as well
return area;
}

@Override
public void visit(Circle circle) {
// If colour matches, add area to total
if (circle.getColour().equals(colour)) {
area += circle.area();
}

}

@Override
public void visit(Rectangle rectangle) {
// If colour matches, add area to total
if (rectangle.getColour().equals(colour)) {
area += rectangle.area();
}

}

@Override
public void visit(Triangle triangle) {
// If colour matches, add area to total
if (triangle.getColour().equals(colour)) {
area += triangle.area();
}

}

@Override
public void visit(ShapeGroup group) {
// Do nothing for a shapegroup since its sub components will be visited

}

}