InterfaceDemo.java
· 605 B · Java
Bruto
interface Shape {
double area();
double perimeter();
}
class Circle implements Shape {
private double radius;
public Circle(double radius) {
this.radius = radius;
}
public double area() {
return Math.PI * radius * radius;
}
public double perimeter() {
return 2 * Math.PI * radius;
}
}
public class InterfaceDemo {
public static void main(String[] args) {
Circle circle = new Circle(5.0);
System.out.println("Circle Area: " + circle.area());
System.out.println("Circle Perimeter: " + circle.perimeter());
}
}
| 1 | interface Shape { |
| 2 | double area(); |
| 3 | double perimeter(); |
| 4 | } |
| 5 | |
| 6 | class Circle implements Shape { |
| 7 | private double radius; |
| 8 | |
| 9 | public Circle(double radius) { |
| 10 | this.radius = radius; |
| 11 | } |
| 12 | |
| 13 | public double area() { |
| 14 | return Math.PI * radius * radius; |
| 15 | } |
| 16 | |
| 17 | public double perimeter() { |
| 18 | return 2 * Math.PI * radius; |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | public class InterfaceDemo { |
| 23 | public static void main(String[] args) { |
| 24 | Circle circle = new Circle(5.0); |
| 25 | System.out.println("Circle Area: " + circle.area()); |
| 26 | System.out.println("Circle Perimeter: " + circle.perimeter()); |
| 27 | } |
| 28 | } |
| 29 |