Changed package naming across all examples.

builder/src/main/java/com/iluwatar/builder/App.java

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+package com.iluwatar.builder;
+
+import com.iluwatar. builder.Hero.HeroBuilder;
+
+/**
+ * 
+ * This is the Builder pattern variation as described by Joshua Bloch in
+ * Effective Java 2nd Edition.
+ * 
+ * We want to build Hero objects, but its construction is complex because of the
+ * many parameters needed. To aid the user we introduce HeroBuilder class.
+ * HeroBuilder takes the minimum parameters to build Hero object in its
+ * constructor. After that additional configuration for the Hero object can be
+ * done using the fluent HeroBuilder interface. When configuration is ready the
+ * build method is called to receive the final Hero object.
+ * 
+ */
+public class App {
+
+	public static void main(String[] args) {
+
+		Hero mage = new HeroBuilder(Profession.MAGE, "Riobard")
+				.withHairColor(HairColor.BLACK).withWeapon(Weapon.DAGGER)
+				.build();
+		System.out.println(mage);
+
+		Hero warrior = new HeroBuilder(Profession.WARRIOR, "Amberjill")
+				.withHairColor(HairColor.BLOND)
+				.withHairType(HairType.LONG_CURLY).withArmor(Armor.CHAIN_MAIL)
+				.withWeapon(Weapon.SWORD).build();
+		System.out.println(warrior);
+
+		Hero thief = new HeroBuilder(Profession.THIEF, "Desmond")
+				.withHairType(HairType.BALD).withWeapon(Weapon.BOW).build();
+		System.out.println(thief);
+
+	}
+}

builder/src/main/java/com/iluwatar/builder/Armor.java

@@ -0,0 +1,17 @@
+package com.iluwatar.builder;
+
+public enum Armor {
+
+	CLOTHES("clothes"), LEATHER("leather"), CHAIN_MAIL("chain mail"), PLATE_MAIL("plate mail");
+
+    private String title;
+
+    Armor(String title) {
+        this.title = title;
+    }
+
+    @Override
+	public String toString() {
+		return title;
+	}
+}

builder/src/main/java/com/iluwatar/builder/HairColor.java

@@ -0,0 +1,12 @@
+package com.iluwatar.builder;
+
+public enum HairColor {
+
+	WHITE, BLOND, RED, BROWN, BLACK;
+
+	@Override
+	public String toString() {
+		return name().toLowerCase();
+	}
+
+}

builder/src/main/java/com/iluwatar/builder/HairType.java

@@ -0,0 +1,17 @@
+package com.iluwatar.builder;
+
+public enum HairType {
+
+	BALD("bald"), SHORT("short"), CURLY("curly"), LONG_STRAIGHT("long straight"), LONG_CURLY("long curly");
+
+    private String title;
+
+    HairType(String title) {
+        this.title = title;
+    }
+
+    @Override
+	public String toString() {
+		return title;
+	}
+}

builder/src/main/java/com/iluwatar/builder/Hero.java

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+package com.iluwatar.builder;
+
+/**
+ * 
+ * The class with many parameters.
+ * 
+ */
+public class Hero {
+
+	private final Profession profession;
+	private final String name;
+	private final HairType hairType;
+	private final HairColor hairColor;
+	private final Armor armor;
+	private final Weapon weapon;
+
+	public Profession getProfession() {
+		return profession;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public HairType getHairType() {
+		return hairType;
+	}
+
+	public HairColor getHairColor() {
+		return hairColor;
+	}
+
+	public Armor getArmor() {
+		return armor;
+	}
+
+	public Weapon getWeapon() {
+		return weapon;
+	}
+
+	@Override
+	public String toString() {
+
+		StringBuilder sb = new StringBuilder();
+		sb.append("This is a ");
+		sb.append(profession);
+		sb.append(" named ");
+		sb.append(name);
+		if (hairColor != null || hairType != null) {
+			sb.append(" with ");
+			if (hairColor != null) {
+				sb.append(hairColor);
+				sb.append(" ");
+			}
+			if (hairType != null) {
+				sb.append(hairType);
+				sb.append(" ");
+			}
+			sb.append(hairType != HairType.BALD ? "hair" : "head");
+		}
+		if (armor != null) {
+			sb.append(" wearing ");
+			sb.append(armor);
+		}
+		if (weapon != null) {
+			sb.append(" and wielding a ");
+			sb.append(weapon);
+		}
+		sb.append(".");
+		return sb.toString();
+	}
+
+	private Hero(HeroBuilder builder) {
+		this.profession = builder.profession;
+		this.name = builder.name;
+		this.hairColor = builder.hairColor;
+		this.hairType = builder.hairType;
+		this.weapon = builder.weapon;
+		this.armor = builder.armor;
+	}
+
+	/**
+	 * 
+	 * The builder class.
+	 * 
+	 */
+	public static class HeroBuilder {
+
+		private final Profession profession;
+		private final String name;
+		private HairType hairType;
+		private HairColor hairColor;
+		private Armor armor;
+		private Weapon weapon;
+
+		public HeroBuilder(Profession profession, String name) {
+			if (profession == null || name == null) {
+				throw new IllegalArgumentException(
+						"profession and name can not be null");
+			}
+			this.profession = profession;
+			this.name = name;
+		}
+
+		public HeroBuilder withHairType(HairType hairType) {
+			this.hairType = hairType;
+			return this;
+		}
+
+		public HeroBuilder withHairColor(HairColor hairColor) {
+			this.hairColor = hairColor;
+			return this;
+		}
+
+		public HeroBuilder withArmor(Armor armor) {
+			this.armor = armor;
+			return this;
+		}
+
+		public HeroBuilder withWeapon(Weapon weapon) {
+			this.weapon = weapon;
+			return this;
+		}
+
+		public Hero build() {
+			return new Hero(this);
+		}
+	}
+}

builder/src/main/java/com/iluwatar/builder/Profession.java

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+package com.iluwatar.builder;
+
+public enum Profession {
+
+	WARRIOR, THIEF, MAGE, PRIEST;
+
+	@Override
+	public String toString() {
+		return name().toLowerCase();
+	}
+
+}

builder/src/main/java/com/iluwatar/builder/Weapon.java

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+package com.iluwatar.builder;
+
+public enum Weapon {
+
+	DAGGER, SWORD, AXE, WARHAMMER, BOW;
+
+	@Override
+	public String toString() {
+		return name().toLowerCase();
+	}
+
+}