Changes between Version 4 and Version 5 of jazz/21-09-22

Timestamp:

Oct 7, 2021, 4:32:46 PM (4 years ago)

Author:

jazz

Comment:

--

jazz/21-09-22

@@ -19 +19 @@
 
 - [[Image(OOP_Concepts.png)]]
+
+{{{
+#!java
+public class HelloWorld{
+
+     public static void main(String []args){
+        System.out.println("Hello World");
+        
+        Animal a = new Cat();
+        Animal b = new Kitten();
+        
+        a.who_am_i();
+        b.who_am_i();
+     }
+}
+
+abstract class Animal {
+    abstract void who_am_i();
+}
+
+class Cat extends Animal {
+    void who_am_i() {
+        System.out.println("I'm a Cat");
+    }
+}
+
+class Kitten extends Cat {
+    void who_am_i() {
+        System.out.println("I'm a Kitten");
+    }
+}
+}}}