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Talk given at OPKOKO 23.1 in Berlin about why we should not use null in our software systems. And what to do instead.

Explained Checked Exception and Unchecked Exception through code.

Explained Throws keyword in Exception Handling.

Explaining try-with-resource.

How can we create our own custom exception.

Techno.

In this video, I'll answer some FAQs on sharing and visibility in Salesforce that every Salesforce interviewee should know.