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| // class Shapes { | |
| // double findArea(int radius) { | |
| // return 3.14 * radius * radius; | |
| // } | |
| // double findArea(double side) { | |
| // return side * side; | |
| // } | |
| // double findArea(double length, double breadth) { | |
| // return length * breadth; | |
| // } | |
| // } | |
| // interface Shapes { | |
| // double area(); | |
| // } | |
| // class Circle implements Shapes { | |
| // static final double PI = 3.14; | |
| // private double radius; | |
| // Circle() { | |
| // } | |
| // Circle(double radius) { | |
| // this.radius = radius; | |
| // } | |
| // public double getRadius() { | |
| // return this.radius; | |
| // } | |
| // public void setRadius(double radius) { | |
| // this.radius = radius; | |
| // } | |
| // public double area() { | |
| // return PI * radius * radius; | |
| // } | |
| // @Override | |
| // public String toString() { | |
| // return "Circle [radius=" + radius + ", area=" + area() + "]"; | |
| // } | |
| // } | |
| // class Rectangle implements Shapes { | |
| // private double length; | |
| // private double breadth; | |
| // Rectangle() { | |
| // } | |
| // Rectangle(double length, double breadth) { | |
| // this.length = length; | |
| // this.breadth = breadth; | |
| // } | |
| // public double getLength() { | |
| // return this.length; | |
| // } | |
| // public void setLength(double length) { | |
| // this.length = length; | |
| // } | |
| // public double getBreadth() { | |
| // return this.breadth; | |
| // } | |
| // public void setBreadth(double breadth) { | |
| // this.breadth = breadth; | |
| // } | |
| // public double area() { | |
| // return length * breadth; | |
| // } | |
| // @Override | |
| // public String toString() { | |
| // return "Rectangle [breadth=" + breadth + ", length=" + length + ", area=" + area() + "]"; | |
| // } | |
| // } | |
| interface Shapes { | |
| double area(double x); | |
| } | |
| public class ShapesDriver { | |
| public static void main(String[] args) { | |
| // Shapes shapes = new Shapes(); | |
| // String name1 = "Akash"; | |
| // String name2 = "Akash"; | |
| // name1 = "Akash Das"; | |
| // name2 = "Akash Das"; | |
| // name1 = "Akash"; | |
| // System.out.println("Area of Rectangle:: " + shapes.findArea(5)); | |
| // System.out.println("Area of square:: " + shapes.findArea(5.0)); | |
| // System.out.println("Area of rectangle:: " + shapes.findArea(5, 6)); | |
| // Shapes circle = new Circle(5); | |
| // Shapes rectangle = new Rectangle(5, 6); | |
| // System.out.println(circle); | |
| // System.out.println(rectangle); | |
| // Shapes circle = new Shapes() { | |
| // public double area(double radius) { | |
| // return 3.14 * radius * radius; | |
| // } | |
| // }; | |
| Shapes circle = radius -> 3.14 * radius * radius; | |
| System.out.println(circle.area(5)); | |
| } | |
| } |