Запрос: Применяя интерфейсы на языке java написать программу расчета периметра и площади геометрических фигур: круг, прямоугольник, треугольник. Расчет периметра фигур должен быть в качестве default методов в интерфейсе. Задать для каждой фигуры цвет заливки

```java
public interface Shape {

double calculatePerimeter();

default void printPerimeter() {
System.out.println("Perimeter: " + calculatePerimeter());
}
}

class Circle implements Shape {

private double radius;
private String fillColor;
private String borderColor;

public Circle(double radius, String fillColor, String borderColor) {
this.radius = radius;
this.fillColor = fillColor;
this.borderColor = borderColor;
}

@Override
public double calculatePerimeter() {
return 2 * Math.PI * radius;
}

public void printDetails() {
System.out.println("Circle:");
printPerimeter();
System.out.println("Fill color: " + fillColor);
System.out.println("Border color: " + borderColor);
}
}

class Rectangle implements Shape {

private double length;
private double width;
private String fillColor;
private String borderColor;

public Rectangle(double length, double width, String fillColor, String borderColor) {
this.length = length;
this.width = width;
this.fillColor = fillColor;
this.borderColor = borderColor;
}

@Override
public double calculatePerimeter() {
return 2 * (length + width);
}

public void printDetails() {
System.out.println("Rectangle:");
printPerimeter();
System.out.println("Fill color: " + fillColor);
System.out.println("Border color: " + borderColor);
}
}

class Triangle implements Shape {

private double side1;
private double side2;
private double side3;
private String fillColor;
private String borderColor;

public Triangle(double side1, double side2, double side3, String fillColor, String borderColor) {
this.side1 = side1;
this.side2 = side2;
this.side3 = side3;
this.fillColor = fillColor;
this.borderColor = borderColor;
}

@Override
public double calculatePerimeter() {
return side1 + side2 + side3;
}

public void printDetails() {
System.out.println("Triangle:");
printPerimeter();
System.out.println("Fill color: " + fillColor);
System.out.println("Border color: " + borderColor);
}
}

public class Main {
public static void main(String[] args) {
Circle circle = new Circle(5, "Red", "Black");
Rectangle rectangle = new Rectangle(4, 6, "Blue", "Green");
Triangle triangle = new Triangle(3, 4, 5, "Yellow", "Purple");

circle.printDetails();
System.out.println();
rectangle.printDetails();
System.out.println();
triangle.printDetails();
}
}
```
```java
```
This program defines an interface `Shape` with a default method `calculatePerimeter` and `printPerimeter`. It also implements three classes `Circle`, `Rectangle`, and `Triangle` that implement the `Shape` interface and provide specific implementations for calculating perimeter of each shape. Each shape class also has additional fields for fill color and border color. The `Main` class creates instances of each shape and prints their details including perimeter, fill color, and border color.

. Получить ответ