Homework

src/main/java/core/basesyntax/Area.java

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+package core.basesyntax;
+
+public interface Area {
+    double getArea();
+}

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

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

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

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+package core.basesyntax;
+
+import java.util.Random;
+
+public class ColorSupplier {
+    private static final String[] COLORS = {"red", "green", "blue", "yellow", "purple", "orange"};
+    private final Random random = new Random();
+
+    public String getRandomColor() {
+        return COLORS[random.nextInt(COLORS.length)];
+    }
+}

src/main/java/core/basesyntax/Drawer.java

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

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

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+package core.basesyntax;
+
+public abstract class Figure implements Area, Drawer {
+    protected String color;
+}

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

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+package core.basesyntax;
+
+import java.util.Random;
+
+public class FigureSupplier {
+    private static final Random random = new Random();
+
+    public Figure getRandomFigure() {
+        int choice = random.nextInt(5);
+        String color = new ColorSupplier().getRandomColor();
+
+        switch (choice) {
+            case 0:
+                return new Square(color, random.nextDouble() * 10 + 1);
+            case 1:
+                return new Rectangle(color, random.nextDouble() * 10 + 1,
+                        random.nextDouble() * 10 + 1);
+            case 2:
+                return new RightTriangle(color, random.nextDouble() * 10 + 1,
+                        random.nextDouble() * 10 + 1);
+            case 3:
+                return new Circle(color, random.nextDouble() * 10 + 1);
+            case 4:
+                return new IsoscelesTrapezoid(color, random.nextDouble() * 10 + 1,
+                        random.nextDouble() * 10 + 1,
+                        random.nextDouble() * 10 + 1);
+            default:
+                return getDefaultFigure();
+        }
+    }
+
+    public Figure getDefaultFigure() {
+        return new Circle("white", 10);
+    }
+}

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

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+package core.basesyntax;
+
+public class IsoscelesTrapezoid extends Figure {
+    private final double upperBase;
+    private final double lowerBase;
+    private final double height;
+
+    public IsoscelesTrapezoid(String color, double upperBase, double lowerBase, double height) {
+        this.color = color;
+        this.upperBase = upperBase;
+        this.lowerBase = lowerBase;
+        this.height = height;
+    }
+
+    @Override
+    public double getArea() {
+        return 0.5 * (upperBase + lowerBase) * height;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: isosceles trapezoid, area: "
+                + getArea()
+                + " sq.units, upperBase: "
+                + upperBase
+                + " units, lowerBase: "
+                + lowerBase + " units, height: "
+                + height
+                + " units, color: "
+                + color);
+    }
+}

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

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+package core.basesyntax;
+
+public class Main {
+    public static void main(String[] args) {
+        final int N = 6;
+        FigureSupplier figureSupplier = new FigureSupplier();
+        Figure[] figures = new Figure[N];
+
+        for (int i = 0; i < 3; i++) {
+            figures[i] = figureSupplier.getRandomFigure();
+        }
+
+        for (int i = 3; i < 6; i++) {
+            figures[i] = figureSupplier.getDefaultFigure();
+        }
+
+        for (Figure figure : figures) {
+            figure.draw();
+        }
+    }
+}

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

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+package core.basesyntax;
+
+public class Rectangle extends Figure {
+    private final double length;
+    private final double width;
+
+    public Rectangle(String color, double length, double width) {
+        this.color = color;
+        this.length = length;
+        this.width = width;
+    }
+
+    @Override
+    public double getArea() {
+        return length * width;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: rectangle, area: "
+                + getArea()
+                + " sq.units, length: "
+                + length
+                + " units, width: "
+                + width + " units, color: "
+                + color);
+    }
+}

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

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+package core.basesyntax;
+
+public class RightTriangle extends Figure {
+    private final double firstLeg;
+    private final double secondLeg;
+
+    public RightTriangle(String color, double firstLeg, double secondLeg) {
+        this.color = color;
+        this.firstLeg = firstLeg;
+        this.secondLeg = secondLeg;
+    }
+
+    @Override
+    public double getArea() {
+        return 0.5 * firstLeg * secondLeg;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: right triangle, area: "
+                + getArea()
+                + " sq.units, firstLeg: "
+                + firstLeg
+                + " units, secondLeg: "
+                + secondLeg + " units, color: "
+                + color);
+    }
+
+}

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

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