diff -r 02e05defc6a0 -r 3bc4c54f4bcc samples/apifest1/day2/pinbasedsolution/src/org/netbeans/apifest/boolcircuit/Element.java
--- a/samples/apifest1/day2/pinbasedsolution/src/org/netbeans/apifest/boolcircuit/Element.java	Sat Jun 14 09:52:52 2008 +0200
+++ b/samples/apifest1/day2/pinbasedsolution/src/org/netbeans/apifest/boolcircuit/Element.java	Sat Jun 14 09:56:12 2008 +0200
@@ -1,22 +1,14 @@
-/*
- * Element.java
- *
- * Created on 12. červenec 2006, 14:14
- *
- * To change this template, choose Tools | Template Manager
- * and open the template in the editor.
- */
-
 package org.netbeans.apifest.boolcircuit;
 
 /**
  * Representation of an element in the circuit.
- * The internal behaviour of the element is opaque to the API user, it can only
- * be used as a building block for logical equations, using primitive operation
- * factories and a factory for input pin representation.
- * Elements are chained to create the logical net. The inputs to the net are
- * represented by the elements created by {@link #createInput(boolean[])}
- * factory method.
+ * The internal behaviour of the element is opaque to the API user, 
+ * it can only be used as a building block for logical equations, 
+ * using primitive operation factories and a factory for input 
+ * pin representation.
+ * Elements are chained to create the logical net. 
+ * The inputs to the net are represented by the elements created 
+ * by {@link #createInput(boolean[])} factory method.
  */
 public abstract class Element {
         
@@ -34,7 +26,9 @@
      * Creates an Element representing 2-input AND function.
      *
      */
-    public static Element createAnd(final Element source1, final Element source2) {
+    public static Element createAnd(
+        final Element source1, final Element source2
+    ) {
         return new Element() {
             double evaluate(double[] inputs) {
                 return source1.evaluate(inputs) * source2.evaluate(inputs);
@@ -50,7 +44,9 @@
      * Creates an Element representing 2-input OR function.
      *
      */
-    public static Element createOr(final Element source1, final Element source2) {
+    public static Element createOr(
+        final Element source1, final Element source2
+    ) {
         return new Element() {
             double evaluate(double[] inputs) {
                 double x = source1.evaluate(inputs);
@@ -100,13 +96,17 @@
     /**
      * Creates an Element with user-defined transfer function.
      */
-    public static Element createGate(final Element source1, final Element source2, final Function function) {
+    public static Element createGate(
+        final Element source1, final Element source2, final Function function
+    ) {
         return new Element() {
             double evaluate(double[] inputs) {
                 double x = source1.evaluate(inputs);
                 double y = source2.evaluate(inputs);
                 double result = function.evaluate(x, y);
-                if (result < 0.0 || result > 1.0) throw new InternalError("Illegal gate function");
+                if (result < 0.0 || result > 1.0) {
+                    throw new InternalError("Illegal gate function");
+                }
                 return result;
             }