diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
new file mode 100644
index 000000000..37ae05449
--- /dev/null
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Bulldozer extends Machine {
+   @Override
+   public void doWork() {
+
+   }
+
+   @Override
+   public void stopWork() {
+
+   }
+}
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
new file mode 100644
index 000000000..49f4d9c7f
--- /dev/null
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Excavator extends Machine {
+   @Override
+   public void doWork() {
+
+   }
+
+   @Override
+   public void stopWork() {
+
+   }
+}
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
new file mode 100644
index 000000000..89cffe858
--- /dev/null
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -0,0 +1,9 @@
+package core.basesyntax;
+
+public abstract class Machine {
+
+   public abstract void doWork();
+   public abstract void stopWork();
+
+
+}
diff --git a/src/main/java/core/basesyntax/MainApp.java b/src/main/java/core/basesyntax/MainApp.java
index f99e9a019..268fdc75a 100644
--- a/src/main/java/core/basesyntax/MainApp.java
+++ b/src/main/java/core/basesyntax/MainApp.java
@@ -2,4 +2,18 @@
 
 public class MainApp {
 
+    public static void main(String[] args) {
+       Machine truck = new Truck();
+       Machine bulldozer = new Bulldozer();
+       Machine excavator = new Excavator();
+
+       Machine[] machines = {truck, bulldozer, excavator};
+
+       for (Machine machine : machines) {
+          machine.doWork();
+          machine.stopWork();
+       }
+    }
+
+
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
new file mode 100644
index 000000000..e1373e59a
--- /dev/null
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Truck extends Machine {
+   @Override
+   public void doWork() {
+
+   }
+
+   @Override
+   public void stopWork() {
+
+   }
+}