Realization of full application

src/main/java/core/basesyntax/Application.java

@@ -0,0 +1,18 @@
+package core.basesyntax;
+
+public class Application {
+    private static final int FIGURE_COUNT = 6;
+
+    public static void main(String[] args) {
+        FigureSupplier figureSupplier = new FigureSupplier();
+        Figure[] figures = new Figure[FIGURE_COUNT];
+        for (int i = 0; i < FIGURE_COUNT; i++) {
+            if (i < FIGURE_COUNT / 2) {
+                figures[i] = figureSupplier.getRandomFigure();
+            } else {
+                figures[i] = figureSupplier.getDefaultFigure();
+            }
+            figures[i].draw();
+        }
+    }
+}

src/main/java/core/basesyntax/AreaCalculator.java

@@ -0,0 +1,5 @@
+package core.basesyntax;
+
+public interface AreaCalculator {
+    double getArea();
+}

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

@@ -0,0 +1,23 @@
+package core.basesyntax;
+
+public class Circle extends Figure {
+    private final int radius;
+
+    public Circle(int radius, String color) {
+        super(color);
+        this.radius = radius;
+    }
+
+    @Override
+    public double getArea() {
+        return Math.PI * Math.pow(radius, 2);
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: circle, area: "
+                + getArea()
+                + ", radius: "
+                + radius + ", color: " + color);
+    }
+}

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

@@ -0,0 +1,12 @@
+package core.basesyntax;
+
+public enum Color {
+    BLACK,
+    WHITE,
+    YELLOW,
+    GREEN,
+    BLUE,
+    ORANGE,
+    PURPLE,
+    PINK
+}

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

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+import java.util.Random;
+
+public class ColorSupplier {
+    private final Random random = new Random();
+    private final Color[] colorArray = Color.values();
+
+    public String getRandomColor() {
+        int index = random.nextInt(colorArray.length);
+        return colorArray[index].name();
+    }
+}

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

@@ -0,0 +1,5 @@
+package core.basesyntax;
+
+public interface Drawable {
+    void draw();
+}

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

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public abstract class Figure implements Drawable, AreaCalculator {
+    protected String color;
+
+    public Figure(String color) {
+        this.color = color;
+    }
+
+    public String getColor() {
+        return color;
+    }
+}

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

@@ -0,0 +1,40 @@
+package core.basesyntax;
+
+import java.util.Random;
+
+public class FigureSupplier {
+    private static final int MAX_LENGTH = 100;
+    private static final int FIGURE_COUNT = 5;
+    private static final int DEFAULT_RADIUS = 10;
+    private static final String DEFAULT_COLOR = Color.WHITE.name();
+
+    private final Random random = new Random();
+    private final ColorSupplier supplier = new ColorSupplier();
+
+    public Figure getRandomFigure() {
+        String color = supplier.getRandomColor();
+        final int index = random.nextInt(FIGURE_COUNT);
+
+        switch (index) {
+            case 0:
+                return new Circle(getRandomNumber(), color);
+            case 1:
+                return new IsoscelesTrapezoid(getRandomNumber(), getRandomNumber(),
+                        getRandomNumber(), color);
+            case 2:
+                return new Rectangle(getRandomNumber(), getRandomNumber(), color);
+            case 3:
+                return new RightTriangle(getRandomNumber(), getRandomNumber(), color);
+            default:
+                return new Square(getRandomNumber(), color);
+        }
+    }
+
+    public Figure getDefaultFigure() {
+        return new Circle(DEFAULT_RADIUS, DEFAULT_COLOR);
+    }
+
+    private int getRandomNumber() {
+        return random.nextInt(MAX_LENGTH - 1) + 1;
+    }
+}

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

@@ -0,0 +1,30 @@
+package core.basesyntax;
+
+public class IsoscelesTrapezoid extends Figure {
+    private final int height;
+    private final int firstBase;
+    private final int secondBase;
+
+    public IsoscelesTrapezoid(int height, int firstBase, int secondBase, String color) {
+        super(color);
+        this.height = height;
+        this.firstBase = firstBase;
+        this.secondBase = secondBase;
+    }
+
+    @Override
+    public double getArea() {
+        return (double) ((firstBase + secondBase) * height) / 2;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: isosceles trapezoid, area: "
+                + getArea()
+                + ", height: " + height
+                + ", first Base: " + firstBase
+                + ", secondBase: "
+                + secondBase
+                + ", color: " + color);
+    }
+}

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

@@ -0,0 +1,26 @@
+package core.basesyntax;
+
+public class Rectangle extends Figure {
+    private final int firstSide;
+    private final int secondSide;
+
+    public Rectangle(int firstSide, int secondSide, String color) {
+        super(color);
+        this.firstSide = firstSide;
+        this.secondSide = secondSide;
+    }
+
+    @Override
+    public double getArea() {
+        return firstSide * secondSide;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: rectangle, area: " + getArea()
+                + ", firstSide: "
+                + firstSide + ", secondSide: "
+                + secondSide + ", color: "
+                + color);
+    }
+}

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

@@ -0,0 +1,28 @@
+package core.basesyntax;
+
+public class RightTriangle extends Figure {
+    private final int firstLeg;
+    private final int secondLeg;
+
+    public RightTriangle(int firstLeg, int secondLeg, String color) {
+        super(color);
+        this.firstLeg = firstLeg;
+        this.secondLeg = secondLeg;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: right triangle, area: "
+                + getArea()
+                + ", first leg: "
+                + firstLeg + ", second leg:"
+                + secondLeg
+                + ", color: "
+                + color);
+    }
+
+    @Override
+    public double getArea() {
+        return (double) firstLeg * secondLeg / 2;
+    }
+}

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

@@ -0,0 +1,24 @@
+package core.basesyntax;
+
+public class Square extends Figure {
+    private final int side;
+
+    public Square(int side, String color) {
+        super(color);
+        this.side = side;
+    }
+
+    @Override
+    public void draw() {
+        System.out.println("Figure: square, area: "
+                + getArea()
+                + ", side: "
+                + side + ", color: "
+                + color);
+    }
+
+    @Override
+    public double getArea() {
+        return side * side;
+    }
+}

src/test/java/core/test/StructureTest.java

@@ -16,7 +16,7 @@
 
 public class StructureTest {
   private static final List<String> figureClassNames = List
-      .of("Circle", "Square", "IsoscelesTrapezoid", "Rectangle", "RightTriangle");
+          .of("Circle", "Square", "IsoscelesTrapezoid", "Rectangle", "RightTriangle");
   private static List<Class> allClasses = new ArrayList<>();
 
   @BeforeClass
@@ -25,8 +25,8 @@ public static void init() {
       allClasses = getClasses("core.basesyntax");
       if (allClasses.size() == 0) {
         Assert.fail("You should not rename base core.basesyntax package "
-            + "and path to project and project name should not contain spaces "
-            + "or words in cyrillic");
+                + "and path to project and project name should not contain spaces "
+                + "or words in cyrillic");
       }
     } catch (Exception e) {
       throw new RuntimeException("Could not load classes ", e);
@@ -152,4 +152,4 @@ private static List<Class> findClasses(File directory, String packageName)
     }
     return classes;
   }
-}
+}