In Java, which of the following statements is/are True ?

S1 : The ‘final’ keyword applied to a class definition prevents the class from being extended through derivation.

S2 : A class can only inherit one class but can implement multiple interfaces.

S3 : Java permits a class to replace the implementation of a method that it has inherited. It is called method overloading.

1. AS1 and S2 only
2. BS1 and S3 only
3. CS2 and S3 only
4. DAll of S1, S2 and S3

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: A. S1 and S2 only

Explanation

A final class can't be extended (S1), and Java has single class inheritance with multiple interfaces (S2). Replacing an inherited method is overriding, not overloading, so S3 is false.