Crear cuenta
public abstract class GeometricFigure {protected String name;
abstract double calculateArea();
abstract double calculatePerimeter();
}public class Circle extends GeometricFigure {private double radio;
private double pi;
public Circle(String name, double radio, double pi) {
super();
this.name = name;
this.radio = radio;
this.pi = pi;
}public double getRadio() {
return radio;
}public void setRadio(double radio) {
this.radio = radio;
}public double getPi() {
return pi;
}@Override
double calculateArea() {
return this.pi * Math.pow(this.radio, 2);
}@Override
double calculatePerimeter() {
return this.pi * (this.radio + this.radio);
}package com.ejercicio.run;
public class Triangle extends GeometricFigure{private double base;
private double height;
private double cO;
private double cA;
private double h;
public Triangle(String name, double base, double height, double cO, double cA, double h ) {
super();
this.name = name;
this.base = base;
this.height = height;
this.cO = cO;
this.cA = cA;
this.h = h;
// TODO Auto-generated constructor stub }@Override
double calculateArea() {
return (base*height/2);
}@Override
double calculatePerimeter() {
return cO+cA+h;
}}public static void main(String args[]) {
GeometricFigure triangle = new Triangle("Equilatero", 10, 20, 15, 10, 30);
System.out.println("Triangulo");
System.out.println("Tipo de triangulo: "+ triangle.name);
System.out.println("Area del triangulo: "+ triangle.calculateArea());
System.out.println("Perimetro del triangulo: "+ triangle.calculatePerimeter());
GeometricFigure circle = new Circle("Circle bullet", 10, Math.PI);
System.out.println("Circle");
System.out.println("Tipo de circulo: "+ circle.name);
System.out.println("Area del circulo: "+ circle.calculateArea());
System.out.println("Perimetro del circulo: "+ circle.calculatePerimeter());
}Hombre[] hombres_arr = new Hombre[10];
Persona[] personas_arr = new Persona[10];
public abstract class GeometricFigure implements Comparable<GeometricFigure> {
public GeometricFigure(String name) {
this.name = name;
}protected final String name;
abstract double calculateArea();
abstract double calculatePerimeter();
@Override
public int compareTo(GeometricFigure o) {
return Double.compare(this.calculateArea(), o.calculateArea());
}}public class Circle extends GeometricFigure {private final double radio;
private final double pi;
public Circle(String name, double radio, double pi) {
super(name);
this.radio = radio;
this.pi = pi;
}@Override
double calculateArea() {
return this.pi * Math.pow(this.radio, 2);
}@Override
double calculatePerimeter() {
return this.pi * (this.radio + this.radio);
}}public class Triangle extends GeometricFigure{private final double base;
private final double height;
private final double cO;
private final double cA;
private final double h;
public Triangle(String name, double base, double height, double cO, double cA, double h ) {
super(name);
this.base = base;
this.height = height;
this.cO = cO;
this.cA = cA;
this.h = h;
}@Override
double calculateArea() {
return (base*height/2);
}@Override
double calculatePerimeter() {
return cO+cA+h;
}}public class Polimorfismo {public static void main(String[] args) {
GeometricFigure triangle = new Triangle("Triangulo Equilatero", 10, 20, 15, 10, 30);
GeometricFigure circle = new Circle("Circle bullet", 10, Math.PI);
List<GeometricFigure> geometricFigures = new ArrayList<>();
geometricFigures.add(circle);
geometricFigures.add(triangle);
System.out.println("Before sorting ....");
for (GeometricFigure geometricFigure : geometricFigures) {
print(geometricFigure);
} // Nota como sort solo toma Comparable.class ...Collections.sort(geometricFigures);
System.out.println();
System.out.println("After sorting ....");
for (GeometricFigure geometricFigure : geometricFigures) {
print(geometricFigure);
System.out.println();
} }private static void print(GeometricFigure geometricFigure) {
String name = geometricFigure.name;
System.out.println(name);
System.out.println("Area del " + name + ": " + geometricFigure.calculateArea());
System.out.println("Perimetro del " + name + ": " + geometricFigure.calculatePerimeter());
}}