niharikakmaveric/banking-transaction-processor ? reverse-engineered prompt

Build me a simple Java app for processing banking transactions.

I want it to take in a stream or file of transaction records, handle common cases like deposits, withdrawals, and transfers, and keep track of balances correctly. It should validate bad input, ignore or flag invalid transactions, and give a clear summary of what happened at the end, like totals and any errors.

Please make it feel like a real small banking utility, with clean code, basic tests, and a straightforward way to run it from the command line or main method. If you need to check current Java best practices or libraries, look up the latest docs online first.

Keep it simple and practical, but make sure the logic is solid and easy to follow.