Update App.java to have more information on the pattern iluwatar#324

delegation/src/main/java/com/iluwatar/delegation/simple/App.java

@@ -5,11 +5,16 @@
 import com.iluwatar.delegation.simple.printers.HpPrinter;
 
 /**
+ * The delegate pattern provides a mechanism to abstract away the implementation and control of the desired action.
+ * The class being called in this case {@link PrinterController} is not responsible for the actual desired action,
+ * but is actually delegated to a helper class either {@link CanonPrinter}, {@link EpsonPrinter} or {@link HpPrinter}.
+ * The consumer does not have or require knowledge of the actual class carrying out the action, only the
+ * container on which they are calling.
+ *
  * In this example the delegates are {@link EpsonPrinter}, {@link HpPrinter} and {@link CanonPrinter} they all implement
- * {@link Printer}. The {@link AbstractPrinterController} and through inheritance {@link PrinterController} also
- * implement {@link Printer}. However neither provide the functionality of {@link Printer} by printing to the screen,
- * they actually call upon the instance of {@link Printer} that they were instantiated with. Therefore delegating the
- * behaviour to another class.
+ * {@link Printer}. The {@link PrinterController} class also implements {@link Printer}. However neither provide the
+ * functionality of {@link Printer} by printing to the screen, they actually call upon the instance of {@link Printer}
+ * that they were instantiated with. Therefore delegating the behaviour to another class.
  */
 public class App {