Several updates and fixes.

Author: neochief

src/refactoring_guru/abstract_factory/example/buttons/Button.java

@@ -14,5 +14,5 @@
  * Это — общий интерфейс для семейства продуктов кнопок.
  */
 public interface Button {
-    public abstract void paint();
+    void paint();
 }

src/refactoring_guru/abstract_factory/example/checkboxes/Checkbox.java

@@ -8,5 +8,5 @@
  * и кнопки.
  */
 public interface Checkbox {
-    public abstract void paint();
+    void paint();
 }

src/refactoring_guru/abstract_factory/example/factories/GUIFactory.java

@@ -9,6 +9,6 @@
  * RU: Абстрактная фабрика знает обо всех (абстрактных) типах продуктов.
  */
 public interface GUIFactory {
-    public abstract Button createButton();
-    public abstract Checkbox createCheckbox();
+    Button createButton();
+    Checkbox createCheckbox();
 }

src/refactoring_guru/bridge/example/devices/Device.java

@@ -1,19 +1,19 @@
 package refactoring_guru.bridge.example.devices;
 
 public interface Device {
-    public boolean isEnabled();
+    boolean isEnabled();
 
-    public void enable();
+    void enable();
 
-    public void disable();
+    void disable();
 
-    public int getVolume();
+    int getVolume();
 
-    public void setVolume(int percent);
+    void setVolume(int percent);
 
-    public int getChannel();
+    int getChannel();
 
-    public void setChannel(int channel);
+    void setChannel(int channel);
 
-    public void printStatus();
+    void printStatus();
 }

src/refactoring_guru/bridge/example/remotes/Remote.java

@@ -1,13 +1,13 @@
 package refactoring_guru.bridge.example.remotes;
 
 public interface Remote {
-    public void power();
+    void power();
 
-    public void volumeDown();
+    void volumeDown();
 
-    public void volumeUp();
+    void volumeUp();
 
-    public void channelDown();
+    void channelDown();
 
-    public void channelUp();
+    void channelUp();
 }

src/refactoring_guru/builder/example/builders/Builder.java

@@ -14,10 +14,10 @@
  * продукта.
  */
 public interface Builder {
-    public void setType(Type type);
-    public void setSeats(int seats);
-    public void setEngine (Engine engine);
-    public void setTransmission(Transmission transmission);
-    public void setTripComputer(TripComputer tripComputer);
-    public void setGPSNavigator(GPSNavigator gpsNavigator);
+    void setType(Type type);
+    void setSeats(int seats);
+    void setEngine(Engine engine);
+    void setTransmission(Transmission transmission);
+    void setTripComputer(TripComputer tripComputer);
+    void setGPSNavigator(GPSNavigator gpsNavigator);
 }

src/refactoring_guru/builder/example/cars/Type.java

@@ -1,5 +1,5 @@
 package refactoring_guru.builder.example.cars;
 
 public enum Type {
-    CITY_CAR, SPORTS_CAR, SUV;
+    CITY_CAR, SPORTS_CAR, SUV
 }

src/refactoring_guru/builder/example/components/Transmission.java

@@ -6,5 +6,5 @@
  * RU: Одна из фишек автомобиля.
  */
 public enum Transmission {
-    SINGLE_SPEED, MANUAL, AUTOMATIC, SEMI_AUTOMATIC;
+    SINGLE_SPEED, MANUAL, AUTOMATIC, SEMI_AUTOMATIC
 }

src/refactoring_guru/command/example/commands/CutCommand.java

@@ -21,7 +21,7 @@ public boolean execute() {
 
     private String cutString(String source) {
         String start = source.substring(0, editor.textField.getSelectionStart());
-        String end = source.substring(editor.textField.getSelectionEnd(), source.length());
+        String end = source.substring(editor.textField.getSelectionEnd());
         return start + end;
     }
 }

src/refactoring_guru/composite/example/shapes/BaseShape.java

@@ -57,7 +57,7 @@ public void unSelect() {
     }
 
     @Override
-    public Boolean isSelected() {
+    public boolean isSelected() {
         return selected;
     }