Finished the example.

private-class-data/src/main/java/com/iluwatar/App.java

@@ -7,5 +7,8 @@ public class App {
     	stew.mix();
     	stew.taste();
     	stew.mix();
+    	
+    	ImmutableStew immutableStew = new ImmutableStew(2, 4, 3, 6);
+    	immutableStew.mix();
     }
 }

private-class-data/src/main/java/com/iluwatar/ImmutableStew.java

@@ -0,0 +1,15 @@
+package com.iluwatar;
+
+public class ImmutableStew {
+
+	private StewData data;
+	
+	public ImmutableStew(int numPotatoes, int numCarrots, int numMeat, int numPeppers) {
+		data = new StewData(numPotatoes, numCarrots, numMeat, numPeppers);
+	}
+	
+	public void mix() {
+		System.out.println(String.format("Mixing the immutable stew we find: %d potatoes, %d carrots, %d meat and %d peppers",
+				data.getNumPotatoes(), data.getNumCarrots(), data.getNumMeat(), data.getNumPeppers()));
+	}
+}

private-class-data/src/main/java/com/iluwatar/Stew.java

@@ -8,10 +8,10 @@ public class Stew {
 	private int numPeppers;
 	
 	public Stew(int numPotatoes, int numCarrots, int numMeat, int numPeppers) {
-				this.numPotatoes = numPotatoes;
+		this.numPotatoes = numPotatoes;
-				this.numCarrots = numCarrots;
+		this.numCarrots = numCarrots;
-				this.numMeat = numMeat;
+		this.numMeat = numMeat;
-				this.numPeppers = numPeppers;
+		this.numPeppers = numPeppers;
 	}
 	
 	public void mix() {

private-class-data/src/main/java/com/iluwatar/StewData.java

@@ -0,0 +1,32 @@
+package com.iluwatar;
+
+public class StewData {
+
+	private int numPotatoes;
+	private int numCarrots;
+	private int numMeat;
+	private int numPeppers;
+	
+	public StewData(int numPotatoes, int numCarrots, int numMeat, int numPeppers) {
+		this.numPotatoes = numPotatoes;
+		this.numCarrots = numCarrots;
+		this.numMeat = numMeat;
+		this.numPeppers = numPeppers;
+	}
+
+	public int getNumPotatoes() {
+		return numPotatoes;
+	}
+
+	public int getNumCarrots() {
+		return numCarrots;
+	}
+
+	public int getNumMeat() {
+		return numMeat;
+	}
+
+	public int getNumPeppers() {
+		return numPeppers;
+	}
+}