Created creature hierarchy.

specification/src/main/java/com/iluwatar/AbstractCreature.java

@@ -0,0 +1,41 @@
+package com.iluwatar;
+
+public abstract class AbstractCreature implements Creature {
+
+	private String name;
+	private Size size;
+	private Movement movement;
+	private Color color;
+
+	public AbstractCreature(String name, Size size, Movement movement, Color color) {
+		this.name = name;
+		this.size = size;
+		this.movement = movement;
+		this.color = color;
+	}	
+	
+	@Override
+	public String toString() {
+		return String.format("%s [size=%s, movement=%s, color=%s]", name, size, movement, color);
+	}
+	
+	@Override
+	public String getName() {
+		return name;
+	}
+	
+	@Override
+	public Size getSize() {
+		return size;
+	}
+	
+	@Override
+	public Movement getMovement() {
+		return movement;
+	}
+	
+	@Override
+	public Color getColor() {
+		return color;
+	}
+}

specification/src/main/java/com/iluwatar/Color.java

@@ -0,0 +1,17 @@
+package com.iluwatar;
+
+public enum Color {
+
+    DARK("dark"), LIGHT("light"), GREEN("green"), RED("red");
+    
+    private String title;
+
+    Color(String title) {
+        this.title = title;
+    }
+
+    @Override
+	public String toString() {
+        return title;
+	}		
+}

specification/src/main/java/com/iluwatar/Creature.java

@@ -0,0 +1,12 @@
+package com.iluwatar;
+
+public interface Creature {
+
+	String getName();
+	
+	Size getSize();
+	
+	Movement getMovement();
+	
+	Color getColor();
+}

specification/src/main/java/com/iluwatar/Dragon.java

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+package com.iluwatar;
+
+public class Dragon extends AbstractCreature {
+
+	public Dragon() {
+		super("Dragon", Size.LARGE, Movement.FLYING, Color.RED);
+	}
+}

specification/src/main/java/com/iluwatar/Goblin.java

@@ -0,0 +1,8 @@
+package com.iluwatar;
+
+public class Goblin extends AbstractCreature {
+
+	public Goblin() {
+		super("Goblin", Size.SMALL, Movement.WALKING, Color.GREEN);
+	}
+}

specification/src/main/java/com/iluwatar/Movement.java

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+package com.iluwatar;
+
+public enum Movement {
+
+    WALKING("walking"), SWIMMING("swimming"), FLYING("flying");
+    
+    private String title;
+
+    Movement(String title) {
+        this.title = title;
+    }
+
+    @Override
+	public String toString() {
+        return title;
+	}	
+}

specification/src/main/java/com/iluwatar/Octopus.java

@@ -0,0 +1,8 @@
+package com.iluwatar;
+
+public class Octopus extends AbstractCreature {
+
+	public Octopus() {
+		super("Octopus", Size.NORMAL, Movement.SWIMMING, Color.DARK);
+	}
+}

specification/src/main/java/com/iluwatar/Size.java

@@ -0,0 +1,22 @@
+package com.iluwatar;
+
+/**
+ *
+ * Enumeration for creature size.
+ *
+ */
+public enum Size {
+
+    SMALL("small"), NORMAL("normal"), LARGE("large");
+    
+    private String title;
+
+    Size(String title) {
+        this.title = title;
+    }
+
+    @Override
+	public String toString() {
+        return title;
+	}
+}