first attempt

README.md

@@ -1,9 +1,9 @@
 # jv-oop
 
-- Create class Machine containing methods `public abstract void doWork()` and `public abstract void stopWork()`.  
-- Create classes `Truck`, `Bulldozer`, and `Excavator` that will inherit from `Machine`.
+- Create class core.basesyntax.Machine containing methods `public abstract void doWork()` and `public abstract void stopWork()`.  
+- Create classes `core.basesyntax.Truck`, `core.basesyntax.Bulldozer`, and `core.basesyntax.Excavator` that will inherit from `core.basesyntax.Machine`.
 - In those classes override `doWork()`, so it will print a message that a certain machine started its work.
 - Override `stopWork()` as well. It should print messages that certain machines stopped working.
-- In the `MainApp` class create a `Machine` array with `Truck`, `Bulldozer`, and `Excavator` and call methods `doWork()` and `stopWork()` in a loop.
+- In the `MainApp` class create a `core.basesyntax.Machine` array with `core.basesyntax.Truck`, `core.basesyntax.Bulldozer`, and `core.basesyntax.Excavator` and call methods `doWork()` and `stopWork()` in a loop.
 
 #### [Try to avoid these common mistakes, while solving task](./checklist.md)

checklist.md

@@ -23,7 +23,7 @@ public class Main {
 
 #### Write informative messages in methods.
 - Use English only and make messages informative
-- The message should indicate what type of `Machine` is working right now `Truck`, `Bulldozer` or `Excavator`.
+- The message should indicate what type of `core.basesyntax.Machine` is working right now `core.basesyntax.Truck`, `core.basesyntax.Bulldozer` or `core.basesyntax.Excavator`.
 
 #### Use abstract references instead of specific ones where possible: 
 * Bad example:

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

@@ -0,0 +1,15 @@
+package core.basesyntax;
+
+import core.basesyntax.Machine;
+
+public class Bulldozer extends Machine {
+    @Override
+    public void doWork() {
+        System.out.println("core.basesyntax.Bulldozer has started working.");
+    }
+
+    @Override
+    public void stopWork() {
+        System.out.println("core.basesyntax.Bulldozer has stopped working.");
+    }
+}

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

@@ -0,0 +1,16 @@
+package core.basesyntax;
+
+import core.basesyntax.Machine;
+
+public class Excavator extends Machine {
+    @Override
+    public void doWork() {
+        System.out.println("core.basesyntax.Excavator has started working.");
+    }
+
+    @Override
+    public void stopWork() {
+        System.out.println("core.basesyntax.Excavator has stopped working.");
+    }
+}
+

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

@@ -0,0 +1,6 @@
+package core.basesyntax;
+
+public abstract class Machine  {
+        public abstract void doWork();
+        public abstract void stopWork();
+}

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

@@ -1,5 +1,17 @@
 package core.basesyntax;
 
 public class MainAppTest {
+    public static void main(String[] args) {
+        final int MACHINE_COUNT = 3;
+        Machine[] machines = new Machine[MACHINE_COUNT];
+        machines[0] = new Truck();
+        machines[1] = new Bulldozer();
+        machines[2] = new Excavator();
 
+
+        for (Machine machine : machines) {
+            machine.doWork();
+            machine.stopWork();
+        }
+    }
 }

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

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Truck extends Machine {
+    @Override
+    public void doWork() {
+        System.out.println("core.basesyntax.Truck has started working.");
+    }
+
+    @Override
+    public void stopWork() {
+        System.out.println("core.basesyntax.Truck has stopped working.");
+    }
+}