Study tips 1Z0-804

What is the cause of the error message?

Which two valid alternatives to line 3 would decouple this application from a specific implementation of CustomerDAO?

What is the result?

Which code fragment demonstrates the proper way to handle JDBC resources?

Which two codes correctly represent a standard language locale code?

What is the result?

Which method would you supply to a class implementing the Callable interface?

Why is this method not producing output on the console?

A method with which signature should be added to the Item class?

What is the result?