prc 3 / java

// Models.java:

package com.company;

abstract class Shape
{
    String color;
    Boolean filled;

    public Shape(String color, Boolean filled)
    {
        this.color = color;
        this.filled = filled;
    }

    public Shape() { }

    String getColor()
    {
        return color;
    }

    void setColor(String color)
    {
        this.color = color;
    }

    Boolean isFilled()
    {
        return filled;
    }

    void setFilled(Boolean isFilled)
    {
        filled = isFilled;
    }

    abstract double getArea();
    abstract double getPerimeter();
}

class Circle extends Shape
{
    double radius;

    public Circle() { }

    public Circle(double radius)
    {
        this.radius = radius;
    }

    public Circle(double radius, String color, Boolean isFilled)
    {
        this.radius = radius;
        super.color = color;
        super.filled = isFilled;
    }

    @Override
    double getArea()
    {
        return Math.PI * radius * radius;
    }

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

    @Override
    public String toString()
    {
        return String.format("Circle:\nS=%f\nP=%f\nColor=%s\nIsFilled?=%s",
                getArea(), getPerimeter(), getColor(), isFilled());
    }
}

class Rectangle extends Shape
{
    double width;
    double length;

    public Rectangle() { }

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

    public Rectangle(double width, double length, String color, Boolean isFilled)
    {
        this.width = width;
        this.length = length;
        super.color = color;
        super.filled = isFilled;
    }

    public double getWidth() {
        return width;
    }

    public void setWidth(double width) {
        this.width = width;
    }

    public double getLength() {
        return length;
    }

    public void setLength(double length) {
        this.length = length;
    }

    @Override
    double getArea() {
        return width * length;
    }

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

    @Override
    public String toString()
    {
        return String.format("Rectangle:\nS=%f\nP=%f\nColor=%s\nIsFilled?=%s",
                getArea(), getPerimeter(), getColor(), isFilled());
    }
}

// Main.java:

package com.company;

class Main
{
    public static void main(String[] args)
    {
        var shapes = new Shape[10];

        for (int i = 0; i < 10; i++)
        {
            if (i % 2 == 0)
            {
                shapes[i] = new Circle(Math.random() * 100, "Black", i % 3 == 0);
            }
            else
            {
                shapes[i] = new Rectangle(Math.random() * 100, Math.random() * 100, "Black",  i % 3 == 0);
            }
        }

        for (var current : shapes)
        {
            System.out.println(current.toString());
            System.out.println();
        }
    }
}

// Output:

Circle:
S=21150,609484
P=515,544758
Color=Black
IsFilled?=true

Rectangle:
S=593,755608
P=100,585965
Color=Black
IsFilled?=false

Circle:
S=24750,825957
P=557,698890
Color=Black
IsFilled?=false

Rectangle:
S=1559,316118
P=166,709883
Color=Black
IsFilled?=true

Circle:
S=3810,251887
P=218,817361
Color=Black
IsFilled?=false

Rectangle:
S=7992,962780
P=357,641006
Color=Black
IsFilled?=false

Circle:
S=10894,135395
P=369,999653
Color=Black
IsFilled?=true

Rectangle:
S=664,407538
P=212,718715
Color=Black
IsFilled?=false

Circle:
S=8592,151006
P=328,591165
Color=Black
IsFilled?=false

Rectangle:
S=516,969441
P=139,738379
Color=Black
IsFilled?=true

Process finished with exit code 0