public class Main {
public static void main(String[] args) {
// membuat objek dari class Triangle
Shape segitiga = new Triangle(4, 5);
// membuat objek dari class Circle
Shape lingkaran = new Circle(10);
System.out.println("Luas Segitiga: " + segitiga.getArea());
System.out.println("Luas Lingkaran: " + lingkaran.getArea());
}
}
public abstract class Shape {
String color;
void setColor(String Color){
this.color = color;
}
String getColor(){
return this.color;
}
abstract float getArea();
}
public class Triangle extends Shape {
private float base;
private float height;
public Triangle(int base, int height) {
this.base = base;
this.height = height;
}
@Override
float getArea() {
return 0.5f * base * height;
}
}
public class Circle extends Shape {
private float radius;
public Circle(float radius) {
this.radius = radius;
}
@Override
float getArea() {
return (float) (Math.PI * radius * radius);
}
}
