add 3 commit

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

@@ -1,4 +1,5 @@
 package core.basesyntax;
+
 public class Bulldozer extends Machine {
     public void doWork() {
         System.out.println("Bulldozer started its work");

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

@@ -1,4 +1,5 @@
 package core.basesyntax;
+
 public class Excavator extends Machine {
     public void doWork() {
         System.out.println("Excavator started its work");

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

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

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

@@ -1,4 +1,5 @@
 package core.basesyntax;
+
 public class MainApp {
     public static void main(String[] args) {
 

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

@@ -1,4 +1,5 @@
 package core.basesyntax;
+
 public class Truck extends Machine {
     public void doWork() {
         System.out.println("Truck started its work");