third try

src/test/java/core/basesyntax/Bulldozer.java

@@ -5,13 +5,11 @@
 public class Bulldozer extends Machine {
     @Override
     public void doWork() {
-        System.out.println("core.basesyntax.Bulldozer has started working.");
+        System.out.println("Bulldozer has started working.");
     }
 
     @Override
     public void stopWork() {
-        System.out.println("core.basesyntax.Bulldozer has stopped working.");
+        System.out.println("Bulldozer has stopped working.");
     }
 }
-
-

src/test/java/core/basesyntax/Excavator.java

@@ -5,12 +5,12 @@
 public class Excavator extends Machine {
     @Override
     public void doWork() {
-        System.out.println("core.basesyntax.Excavator has started working.");
+        System.out.println("Excavator has started working.");
     }
 
     @Override
     public void stopWork() {
-        System.out.println("core.basesyntax.Excavator has stopped working.");
+        System.out.println("Excavator has stopped working.");
     }
 }
 

src/test/java/core/basesyntax/Machine.java

@@ -1,6 +1,6 @@
 package core.basesyntax;
 
-abstract class Machine {
+public abstract class Machine {
         public abstract void doWork();
         public abstract void stopWork();
 }

src/test/java/core/basesyntax/MainAppTest.java

@@ -2,7 +2,8 @@
 
 public class MainAppTest {
     public static void main(String[] args) {
-        Machine[] machines = new Machine[3];
+        final int MACHINE_COUNT = 3;
+        Machine[] machines = new Machine[MACHINE_COUNT];
         machines[0] = new Truck();
         machines[1] = new Bulldozer();
         machines[2] = new Excavator();
@@ -12,6 +13,6 @@ public static void main(String[] args) {
             machine.doWork();
             machine.stopWork();
         }
-   }
+    }
+}
 
-}

src/test/java/core/basesyntax/Truck.java

@@ -3,11 +3,11 @@
 public class Truck extends Machine {
     @Override
     public void doWork() {
-        System.out.println("core.basesyntax.Truck has started working.");
+        System.out.println("Truck has started working.");
     }
 
     @Override
     public void stopWork() {
-        System.out.println("core.basesyntax.Truck has stopped working.");
+        System.out.println("Truck has stopped working.");
     }
 }