Anyone please explain the following program.

Question

https://code.sololearn.com/cgWj9YBQ17z7/?ref=app

Answer 1

What is your question about it?
The inheritance? The input?

Answer 2

The extends keyword is used, it is inheritance.

Answer 3

This is a new question ^^
Pls post a new question and describe what you want to do exactly, thx! (You will receive more answers that way.)

Answer 4

Thanks.

Answer 5

Thanks for your help.

Answer 6

Is it inheritance?

Answer 7

How to use buffered reader in inheritance?