Social control theory. In criminology, social control theory proposes that exploiting the process of socialization and social learning builds self-control and reduces the inclination to indulge in behavior recognized as antisocial.
A simple call to the close() method will do the job. If you close the Connection object first, it will close the PreparedStatement object as well. However, you should always explicitly close the PreparedStatement object to ensure proper cleanup. For a better understanding, let us study Prepare-Example Code.
1 The __next__() method is called whenever someone calls next() on an iterator of an instance of a class. That will make more sense in a minute.  When the __next__() method raises a StopIteration exception, this signals to the caller that the iteration is exhausted.