Find Shape With Largest Area - Java Example Program

class FindShapeWithLargestArea
{
    public static void main(String arg[])
    {
        Shape shapes[] = new Shape[5];
        
        shapes[0] = new Rectangle(30.3, 45.4);
        shapes[1] = new Circle(23.2);
        shapes[2] = new Triangle(146.2, 40.0);
        shapes[3] = new Rectangle(25, 57.8);
        shapes[4] = new Triangle(120.0, 8.0);
        
        
        Shape largest = shapes[0];
        
        for(int i = 0; i < shapes.length; i++)
        {
            if(shapes[i].getArea() > largest.getArea())
            {
                largest = shapes[i];
            }
        }
        
        System.out.println("The details of the shape with largest area are :" );
        
        largest.printDetails();    
    }
}

abstract class Shape
{
    abstract double getArea();

    abstract void printDetails();
}

class Rectangle extends Shape
{
    double length;
    double breadth;

    Rectangle(double length, double breadth)
    {
        this.length = length;
        this.breadth = breadth;
    }

    double getArea()
    {
        return length * breadth;
    }

    void printDetails()
    {
        System.out.println("Type = Rectangle");
        System.out.println("Length = " + length);
        System.out.println("Breadth = " + breadth);
        System.out.println("Area = " + getArea());
    }
}

class Circle extends Shape
{
    double radius;

    Circle(double radius)
    {
        this.radius = radius;
    }

    double getArea()
    {
        return 3.14 * radius * radius;
    }

    void printDetails()
    {
        System.out.println("Type = Circle");
        System.out.println("Radius = " + radius);
        System.out.println("Area = " + getArea());
    }
}

class Triangle extends Shape
{
    double base;
    double height;

    Triangle(double base, double height)
    {
        this.base = base;
        this.height = height;
    }

    double getArea()
    {
        return base * height / 2.0;
    }

    void printDetails()
    {
        System.out.println("Type = Triangle");
        System.out.println("Base = " + base);
        System.out.println("Height = " + height);
        System.out.println("Area = " + getArea());
    }
}