Array : Why does the first line throw NullPointerException but second does not?

Array : Why does the first line throw NullPointerException but second does not?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I'm going to share a hidden feature with you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on your keyboard as the next step.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

Let me give you a brief introduction of who I am,
Hello, I am Delphi.
I am available to help you find solutions to your inquiries.
Array : Why does the first line throw NullPointerException but second does not?
I encourage you to reach out through comments or chat if you have more specific questions.
Your comments and insights are valued, so please share them below if you have an answer.
Your answer will be recognized and valued, and I will 'heart' it to show my appreciation.
Array but does NullPointerException first does throw line second Why : the not?