Create 02B. Boat's inheritors

Week 5: Class hierarchies/02B. Boat's inheritors

@@ -0,0 +1,58 @@
+The programme defines the class Boat.
+
+Write three classes that inherit the class Boat:
+Sailboat
+Rowingboat
+Canoe
+There is no need to define any properties for the classes, an empty block is sufficient.
+
+
+
+import java.util.Random;
+
+public class Test{
+    public static void main(String[] args){
+        final Random r = new Random();
+        
+        
+        System.out.println("Creating objects...");
+                Sailboat sb = new Sailboat();
+        Rowingboat rb = new Rowingboat();
+        Canoe c = new Canoe();
+        
+        System.out.println("Objects created!");
+        System.out.println("Testing inheritance...");
+        
+        System.out.println("Sailboat inherits Boat: " + 
+                (sb instanceof Boat ? "Ok" : "No"));
+        
+        System.out.println("Rowing boat inherits Boat: " + 
+                (rb instanceof Boat ? "Ok" : "No"));
+        
+        System.out.println("Canoe inherits Boat: " + 
+                (c instanceof Boat ? "Ok" : "No"));
+    }
+}
+
+class Boat {}
+
+
+class Sailboat extends Boat {}
+class Rowingboat extends Boat {}
+class Canoe extends Boat {}
+
+
+
+
+
+
+Creating objects...
+Objects created!
+Testing inheritance...
+Sailboat inherits Boat: Ok
+Rowing boat inherits Boat: Ok
+Canoe inherits Boat: Ok
+
+
+
+