Geeksforgeeks - Java App Development - Winter T... Apr 2026

He nodded once. “This works. Why?”

They looked at each other, then around the lab. Other teams were still wrestling with ConcurrentModificationException s, broken calendar pickers, and SQLite connection leaks. GeeksForGeeks - Java App Development - Winter T...

But Riya had just noticed something. The userRole variable wasn’t null because of bad input. It was null because the file reader was skipping the first line of their .csv user database – the header row. She fixed the BufferedReader logic, added a trim, and ran it. He nodded once

Later, certificate in hand, Riya stood outside in the snow. Kabir held up his phone. “Look.” Their app, still running on his laptop back in the lab, had just pushed a notification: “Winter Training – Complete. Great work, Team.” It was null because the file reader was

Two hours later, a soft ding echoed from Kabir’s laptop. A pop-up appeared on both their screens: “New task: Inventory check – 5 kg potatoes remaining.”