feat: Add TV and SmartTV classes to demonstrate method overriding and polymorphism

WHAT the code does:
Defines TV with methods:
- switchON(): prints "TV is Switched ON".
- chnageChannel(): prints "TV channel is change".
Defines SmartTV extending TV with:
- Overridden switchON(): prints "smart TV is Switched On".
- Overridden chnageChannel(): prints "Smart Tv Browsing".
- New method browse(): prints "Smart Tv Browsing".
Defines Overriding with main():
- Creates a SmartTV object, calls overridden and new methods.
- Demonstrates polymorphism with a TV reference pointing to a SmartTV object.
- Creates a base TV object and calls its methods.

WHY this matters:
Demonstrates **method overriding**:
- Subclass methods replace superclass behavior at runtime.
Illustrates **polymorphism**:
- TV reference pointing to SmartTV executes SmartTV’s methods.
Shows subclass-specific functionality via browse() that is unavailable to superclass references.
Reinforces correct use of the @OverRide annotation.

HOW it works:
SmartTV t1 = new SmartTV():
- Calls switchON(), chnageChannel() → SmartTV versions.
- Calls browse() → only available in SmartTV.
TV t2 = new SmartTV():
- Calls chnageChannel(), switchON() → SmartTV’s overridden versions due to dynamic method dispatch.
TV t = new TV():
- Calls switchON(), chnageChannel() → TV’s original versions.

Tips and gotchas:
Typo in method name: chnageChannel should be changeChannel for clarity and convention.
browse() is only accessible through SmartTV references, not through TV references.
SmartTV st3 = new TV(); is invalid → subclass reference cannot point to superclass object.
@ Override annotation ensures correct method signature overriding; keep consistent capitalization.

Use-cases:
Educational example of method overriding and polymorphism in OOP.
Shows how subclass behavior extends and customizes superclass functionality.
Foundation for real-world hierarchies where base classes define interfaces and subclasses specialize.

Short key: class-tv smarttv overriding polymorphism.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

Section12Inheritance/src/Overriding.java

@@ -1,26 +1,29 @@
-//Need Practice the same thing again.
-//Solve Again Revise This.
-//https://abdulbari.newzenler.com/courses/java-se/contents/5fcf6ad0df944
+/**
+ * 📘 Java SE Course – Abdul Bari
+ * <p>
+ * 📝 Need Practice – Solve Again & Revise This
+ * <p>
+ * Course Content: <a href="https://abdulbari.newzenler.com/courses/java-se/contents/5fcf6ad0df944">
+ * https://abdulbari.newzenler.com/courses/java-se/contents/5fcf6ad0df944</a>
+ */
 
-class TV
-{
-    //Added annotaion.
+class TV {
+    //Added annotation.
     public void switchON(){System.out.println("TV is Switched ON");}
     public void chnageChannel(){System.out.println("TV channel is change");}
 }
-class SmartTV extends TV
-{
+
+class SmartTV extends TV {
     @Override
     public void switchON(){System.out.println("smart TV is Switched On");}
     @Override
     public void chnageChannel(){System.out.println("Smart Tv Browsing");}
 
     public void browse(){System.out.println("Smart Tv Browsing");}
 }
-public class Overriding
-{
-    public static void main(String[] args)
-    {
+
+public class Overriding {
+    public static void main(String[] args) {
        SmartTV t1=new SmartTV();
        t1.switchON();
        t1.chnageChannel();
@@ -36,4 +39,4 @@ public static void main(String[] args)
        t.switchON();
        t.chnageChannel();
     }
-}
+}