feat(DEVELOP): create Figure structure

src/main/java/core/basesyntax/Main.java

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+package core.basesyntax;
+
+import core.basesyntax.model.Figure;
+import core.basesyntax.service.FigureSupplier;
+
+public class Main {
+    private static final int COUNT_FIGURES = 6;
+    private static final int HALF_OF_LIST = COUNT_FIGURES / 2;
+
+    public static void main(String[] args) {
+        Figure[] figures = new Figure[COUNT_FIGURES];
+        FigureSupplier figureSupplier = new FigureSupplier();
+
+        for (int i = 0; i < figures.length; i++) {
+            if (i < HALF_OF_LIST) {
+                figures[i] = figureSupplier.getRandomFigure();
+            } else {
+                figures[i] = figureSupplier.getDefaultFigure();
+            }
+            figures[i].draw();
+        }
+    }
+}

src/main/java/core/basesyntax/model/Circle.java

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+package core.basesyntax.model;
+
+public class Circle extends Figure {
+    private int radius;
+
+    public Circle(int radius, String color) {
+        super(color);
+        this.radius = radius;
+    }
+
+    public int getRadius() {
+        return radius;
+    }
+
+    @Override
+    public double getArea() {
+        return Math.PI * radius * radius;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Circle: "
+                + "color: " + getColor()
+                + ", radius: " + getRadius() + " units"
+                + ", area: " + getArea() + " square units");
+    }
+}

src/main/java/core/basesyntax/model/Color.java

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+package core.basesyntax.model;
+
+public enum Color {
+    RED,
+    BLUE,
+    GREEN,
+    YELLOW,
+    BLACK,
+    WHITE,
+    ORANGE
+}

src/main/java/core/basesyntax/model/Drawable.java

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+package core.basesyntax.model;
+
+public interface Drawable {
+    void draw();
+}

src/main/java/core/basesyntax/model/Figure.java

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+package core.basesyntax.model;
+
+public abstract class Figure implements Drawable {
+    private String color;
+
+    public Figure(String color) {
+        this.color = color;
+    }
+
+    abstract double getArea();
+
+    public String getColor() {
+        return color;
+    }
+}

src/main/java/core/basesyntax/model/IsoscelesTrapezoid.java

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+package core.basesyntax.model;
+
+public class IsoscelesTrapezoid extends Figure {
+    private int base;
+    private int height;
+    private int side;
+
+    public IsoscelesTrapezoid(int base, int height, int side, String color) {
+        super(color);
+        this.base = base;
+        this.height = height;
+        this.side = side;
+    }
+
+    public int getBase() {
+        return base;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public int getSide() {
+        return side;
+    }
+
+    @Override
+    public double getArea() {
+        return 0.5 * (base + side) * height;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("IsoscelesTrapezoid: "
+                + "color: " + getColor()
+                + ", base: " + getBase() + " units"
+                + ", height: " + getHeight() + " units"
+                + ", side: " + getSide() + " units"
+                + ", area: " + getArea() + " sq. units");
+    }
+}

src/main/java/core/basesyntax/model/Rectangle.java

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+package core.basesyntax.model;
+
+public class Rectangle extends Figure {
+    private int width;
+    private int height;
+
+    public Rectangle(int width, int height, String color) {
+        super(color);
+        this.width = width;
+        this.height = height;
+    }
+
+    public int getWidth() {
+        return width;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    @Override
+    public double getArea() {
+        return width * height;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Rectangle: "
+                + "color: " + getColor()
+                + ", width: " + getWidth() + " units"
+                + ", height: " + getHeight() + " units"
+                + ", area: " + getArea() + " square units");
+    }
+}

src/main/java/core/basesyntax/model/RightTriangle.java

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+package core.basesyntax.model;
+
+public class RightTriangle extends Figure {
+    private int firstLeg;
+    private int secondLeg;
+
+    public RightTriangle(int firstLeg, int secondLeg, String color) {
+        super(color);
+        this.firstLeg = firstLeg;
+        this.secondLeg = secondLeg;
+    }
+
+    public int getFirstLeg() {
+        return firstLeg;
+    }
+
+    public int getSecondLeg() {
+        return secondLeg;
+    }
+
+    @Override
+    public double getArea() {
+        return 0.5 * firstLeg * secondLeg;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("RightTriangle: "
+                + "color: " + getColor()
+                + ", base: " + getFirstLeg() + " units"
+                + ", height: " + getSecondLeg() + " units"
+                + ", area: " + getArea() + " sq. units");
+    }
+}

src/main/java/core/basesyntax/model/Square.java

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+package core.basesyntax.model;
+
+public class Square extends Figure {
+    private int side;
+
+    public Square(int side, String color) {
+        super(color);
+        this.side = side;
+    }
+
+    public int getSide() {
+        return side;
+    }
+
+    @Override
+    public double getArea() {
+        return side * side;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Square: "
+                + "color: " + getColor()
+                + ", side: " + getSide() + " units"
+                + ", area: " + getArea() + " sq. units");
+    }
+}

src/main/java/core/basesyntax/service/ColorSupplier.java

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+package core.basesyntax.service;
+
+import core.basesyntax.model.Color;
+import java.util.Random;
+
+public class ColorSupplier {
+    private Random random = new Random();
+    private Color[] colors = Color.values();
+
+    public String getRandomColor() {
+        int randomIndex = random.nextInt(colors.length);
+
+        return colors[randomIndex].name();
+    }
+}

src/main/java/core/basesyntax/service/FigureSupplier.java

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+package core.basesyntax.service;
+
+import core.basesyntax.model.Circle;
+import core.basesyntax.model.Figure;
+import core.basesyntax.model.IsoscelesTrapezoid;
+import core.basesyntax.model.Rectangle;
+import core.basesyntax.model.RightTriangle;
+import core.basesyntax.model.Square;
+import java.util.Random;
+
+public class FigureSupplier {
+    private static final int FIGURE_TYPES_COUNT = 5;
+    private static final int MAX_SIZE = 10;
+
+    private final Random random = new Random();
+    private final ColorSupplier colorSupplier = new ColorSupplier();
+
+    public Figure getRandomFigure() {
+        int randomIndex = random.nextInt(FIGURE_TYPES_COUNT) + 1;
+        String color = colorSupplier.getRandomColor();
+
+        int side;
+        int radius;
+        int width;
+        int height;
+        int base;
+        int firstLeg;
+        int secondLeg;
+
+        switch (randomIndex) {
+            case 1:
+                side = random.nextInt(MAX_SIZE) + 1;
+                return new Square(side, color);
+            case 2:
+                radius = random.nextInt(MAX_SIZE) + 1;
+                return new Circle(radius, color);
+            case 3:
+                width = random.nextInt(MAX_SIZE) + 1;
+                height = random.nextInt(MAX_SIZE) + 1;
+                return new Rectangle(width, height, color);
+            case 4:
+                firstLeg = random.nextInt(MAX_SIZE) + 1;
+                secondLeg = random.nextInt(MAX_SIZE) + 1;
+                return new RightTriangle(firstLeg, secondLeg, color);
+            case 5:
+                base = random.nextInt(MAX_SIZE) + 1;
+                height = random.nextInt(MAX_SIZE) + 1;
+                side = random.nextInt(MAX_SIZE) + 1;
+                return new IsoscelesTrapezoid(base, height, side, color);
+            default:
+                return getDefaultFigure();
+        }
+    }
+
+    public Figure getDefaultFigure() {
+        return new Circle(10, "white");
+    }
+}