replaced with the parent class in the main class and removed the empt…

…y lines

src/main/java/core/basesyntax/Bulldozer.java

@@ -1,13 +1,11 @@
 package core.basesyntax;
-
 public class Bulldozer extends Machine {
  @Override
  public void doWork() {
  System.out.println("Bulldozer machine started its work");
  }
  @Override
  public void stopWork() {
-
  System.out.println("Bulldozer machine stopped its work");
  }
 }

src/main/java/core/basesyntax/Excavator.java

@@ -1,14 +1,11 @@
 package core.basesyntax;
-
 public class Excavator extends Machine {
  @Override
  public void doWork() {
-
  System.out.println("Excavator machine started its work");
  }
  @Override
  public void stopWork() {
-
  System.out.println("Excavator machine stopped its work");
  }
 }

src/main/java/core/basesyntax/Machine.java

@@ -1,7 +1,5 @@
 package core.basesyntax;
-
 public abstract class Machine {
  public abstract void doWork();
  public abstract void stopWork();
-
 }

src/main/java/core/basesyntax/MainApp.java

@@ -1,10 +1,9 @@
 package core.basesyntax;
-
 public class MainApp {
  public static void main(String[] args) {
- Truck truck = new Truck();
- Bulldozer bulldozer = new Bulldozer();
- Excavator excavator = new Excavator();
+ Machine truck = new Truck();
+ Machine bulldozer = new Bulldozer();
+ Machine excavator = new Excavator();
  Machine[] machines = new Machine[]{truck, bulldozer, excavator};
  for (Machine machine : machines) {
  machine.doWork();

src/main/java/core/basesyntax/Truck.java

@@ -1,14 +1,11 @@
 package core.basesyntax;
 public class Truck extends Machine {
-
  @Override
  public void doWork() {
-
  System.out.println("Truck machine started its work");
  }
  @Override
  public void stopWork() {
-
  System.out.println("Truck machine stopped its work");
  }
 }