Java

This class inherits from JUnit's TestCase class and implements the setUp() method. The setUp method should call super.setUp(), but doesn't.

The super method is annotated with @OverridingMethodsMustInvokeSuper, but the overriding method isn't calling the super method.

A call has been made to an unsupported method.

close() is being invoked on a value that is always null. If this statement is executed, a null pointer exception will occur. Another serious issue is the fact that the resource that is meant to be closed is not closed.

This loop doesn't seem to have a way to terminate (other than by perhaps throwing an exception).

It is better to explicitly break out of the loop instead of relying on a possibly unclear exit condition.