OOP-Basic

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

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

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

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

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

@@ -0,0 +1,18 @@
+package core.basesyntax;
+
+public abstract class Machine {
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public abstract void doWork();
+
+    public abstract void stopWork();
+
+}

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

@@ -1,5 +1,24 @@
 package core.basesyntax;
 
 public class MainApp {
+    public static void main(String[] args) {
+        Machine truck = new Truck();
+        truck.setName("truck");
 
+        Machine bulldozer = new Bulldozer();
+        bulldozer.setName("bulldozer");
+
+        Machine excavator = new Excavator();
+        excavator.setName("excavator");
+
+        Machine [] machines = new Machine[] {truck, bulldozer, excavator};
+        for (Machine machine : machines) {
+            printInfo(machine);
+        }
+    }
+
+    public static void printInfo(Machine machine) {
+        machine.doWork();
+        machine.stopWork();
+    }
 }

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

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