Review Comments #324

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

@@ -1,34 +0,0 @@
-package com.iluwatar.delegation.simple;
-
-/**
- * Extra layer of abstraction for the controller to allow the controller in this example {@link PrinterController} to
- * be as clean as possible. This just provides the default constructor and a simple getter method. The generic of
- * T allows any implementation of {@link Printer}
- *
- * @param <T> Printer
- * @see Printer
- * @see PrinterController
- */
-public abstract class AbstractPrinterController<T extends Printer> implements Printer {
-
-
-  private T printer;
-
-  /**
-   * @param printer instance of T {@link Printer} this instance is the delegate
-   */
-  public AbstractPrinterController(T printer) {
-    this.printer = printer;
-  }
-
-  /**
-   * Helper method to return the current instance of T {@link Printer} in order for
-   * the controller to call operations on the {@link Printer}
-   *
-   * @return instance of Printer
-   * @see Printer
-   */
-  protected T getPrinter() {
-    return printer;
-  }
-}

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

@@ -21,9 +21,9 @@ public class App {
    * @param args command line args
    */
   public static void main(String[] args) {
-    AbstractPrinterController hpPrinterController = new PrinterController(new HpPrinter());
-    AbstractPrinterController canonPrinterController = new PrinterController(new CanonPrinter());
-    AbstractPrinterController epsonPrinterController = new PrinterController(new EpsonPrinter());
+    PrinterController hpPrinterController = new PrinterController(new HpPrinter());
+    PrinterController canonPrinterController = new PrinterController(new CanonPrinter());
+    PrinterController epsonPrinterController = new PrinterController(new EpsonPrinter());
 
     hpPrinterController.print(MESSAGE_TO_PRINT);
     canonPrinterController.print(MESSAGE_TO_PRINT);

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

@@ -8,7 +8,6 @@ import com.iluwatar.delegation.simple.printers.HpPrinter;
  * @see com.iluwatar.delegation.simple.printers.CanonPrinter
  * @see com.iluwatar.delegation.simple.printers.EpsonPrinter
  * @see HpPrinter
- * @see AbstractPrinterController
  */
 public interface Printer {
 

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

@@ -1,9 +1,11 @@
 package com.iluwatar.delegation.simple;
 
-public class PrinterController extends AbstractPrinterController {
+public class PrinterController implements Printer {
+
+  private final Printer printer;
 
   public PrinterController(Printer printer) {
-    super(printer);
+    this.printer = printer;
   }
 
   /**
@@ -16,6 +18,6 @@ public class PrinterController extends AbstractPrinterController {
    */
   @Override
   public void print(String message) {
-    getPrinter().print(message);
+    printer.print(message);
   }
 }

delegation/src/main/java/com/iluwatar/delegation/simple/printers/CanonPrinter.java

@@ -15,7 +15,7 @@ public class CanonPrinter implements Printer {
    */
   @Override
   public void print(String message) {
-    System.out.println("Canon Printer : " + message);
+    System.out.print("Canon Printer : " + message);
   }
 
 }

delegation/src/main/java/com/iluwatar/delegation/simple/printers/EpsonPrinter.java

@@ -15,7 +15,7 @@ public class EpsonPrinter implements Printer {
    */
   @Override
   public void print(String message) {
-    System.out.println("Epson Printer : " + message);
+    System.out.print("Epson Printer : " + message);
   }
 
 }

delegation/src/main/java/com/iluwatar/delegation/simple/printers/HpPrinter.java

@@ -15,7 +15,7 @@ public class HpPrinter implements Printer {
    */
   @Override
   public void print(String message) {
-    System.out.println("HP Printer : " + message);
+    System.out.print("HP Printer : " + message);
   }
 
 }

delegation/src/test/java/com/iluwatar/delegation/simple/DelegateTest.java

@@ -18,26 +18,26 @@ public class DelegateTest {
 
   @Test
   public void testCanonPrinter() throws Exception {
-    AbstractPrinterController abstractController = new PrinterController(new CanonPrinter());
-    abstractController.print(MESSAGE);
+    PrinterController printerController = new PrinterController(new CanonPrinter());
+    printerController.print(MESSAGE);
 
-    assertEquals("Canon Printer : Test Message Printed\n", systemOutRule.getLog());
+    assertEquals("Canon Printer : Test Message Printed", systemOutRule.getLog());
   }
 
   @Test
   public void testHpPrinter() throws Exception {
-    AbstractPrinterController abstractController = new PrinterController(new HpPrinter());
-    abstractController.print(MESSAGE);
+    PrinterController printerController = new PrinterController(new HpPrinter());
+    printerController.print(MESSAGE);
 
-    assertEquals("HP Printer : Test Message Printed\n", systemOutRule.getLog());
+    assertEquals("HP Printer : Test Message Printed", systemOutRule.getLog());
   }
 
   @Test
   public void testEpsonPrinter() throws Exception {
-    AbstractPrinterController abstractController = new PrinterController(new EpsonPrinter());
-    abstractController.print(MESSAGE);
+    PrinterController printerController = new PrinterController(new EpsonPrinter());
+    printerController.print(MESSAGE);
 
-    assertEquals("Epson Printer : Test Message Printed\n", systemOutRule.getLog());
+    assertEquals("Epson Printer : Test Message Printed", systemOutRule.getLog());
   }
 
 }