Reformat rest of the design patterns - Issue #224

null-object/src/main/java/com/iluwatar/nullobject/NullNode.java

@@ -9,36 +9,34 @@ package com.iluwatar.nullobject;
  */
 public class NullNode implements Node {
 
-	private static NullNode instance = new NullNode();
-	
-	private NullNode() {
-	}
-	
-	public static NullNode getInstance() {
-		return instance;
-	}
-	
-	@Override
-	public int getTreeSize() {
-		return 0;
-	}
+  private static NullNode instance = new NullNode();
 
-	@Override
-	public Node getLeft() {
-		return null;
-	}
+  private NullNode() {}
 
-	@Override
-	public Node getRight() {
-		return null;
-	}
+  public static NullNode getInstance() {
+    return instance;
+  }
 
-	@Override
-	public String getName() {
-		return null;
-	}
+  @Override
+  public int getTreeSize() {
+    return 0;
+  }
 
-	@Override
-	public void walk() {
-	}
+  @Override
+  public Node getLeft() {
+    return null;
+  }
+
+  @Override
+  public Node getRight() {
+    return null;
+  }
+
+  @Override
+  public String getName() {
+    return null;
+  }
+
+  @Override
+  public void walk() {}
 }