created classes, overridden abstract methods, and created an array of…

… class dataÑÐ

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

@@ -0,0 +1,14 @@
+package core.basesyntax;
+
+public class Bulldozer extends Machine{
+
+ @Override
+ public void doWork() {
+ System.out.println("the bulldozer started it`s work");
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("the bulldozer stopped it`s work");
+ }
+}

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

@@ -0,0 +1,15 @@
+package core.basesyntax;
+
+public class Excavator extends Machine {
+
+ @Override
+ public void doWork() {
+ System.out.println("the excavator started it`s work");
+
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("the excavator stopped it`s work");
+ }
+}

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

@@ -1,5 +1,15 @@
 package core.basesyntax;
-
 public class MainApp {
+ public static void main(String[] args) {
+ Machine truck = new Truck();
+ Machine bulldozer = new Bulldozer();
+ Machine excavator = new Excavator();
+ Machine[] machine = {truck, bulldozer, excavator};
 
+ for (Machine m : machine) {
+ m.doWork();
+ m.stopWork();
+ System.out.println();
+ }
+ }
 }

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

@@ -0,0 +1,14 @@
+package core.basesyntax;
+
+public class Truck extends Machine{
+
+ @Override
+ public void doWork() {
+ System.out.println("the truck started it`s work");
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("the truck stopped it`s work");
+ }
+}