Geeksforgeeks - Java App Development - Winter T... Link

“No,” Kabir said, grinning. “That’s the goodbye event from the server. Arjun Sir must have triggered it.”

Riya stared at her terminal. The chat app she was building – TaskFlow – was supposed to sync tasks between a hostel mess committee and the students. Instead, it was syncing nothing but errors. Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "userRole" is null She’d seen that red text so many times she could dream it. GeeksForGeeks - Java App Development - Winter T...

At 11:47 PM on the final night, Riya committed their last change: a simple Observer pattern to notify all users when a task status changed. She wrote the commit message: “Winter doesn't last forever. Neither do bugs.” “No,” Kabir said, grinning