I need help with this: I need to know The necessary classes, methods, and data structures that are needed to complete a functional Java chat program project. SQL is being used if that helps to answer this. PLEASE BE SPECIFIC and provide details. It helps for my understanding.

Originally this is a java project and Iam creating a chat app and this is the portion that is difficult to understand and I need assistance.

This is what was came up with if this helps. Thanks

oo T-Mobile LTE 3:45 PM od Clanes used in chat Room pead Thead thread met ods in Chat Romom Trir New Chan