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.
When Java calls a method, it makes a copy of its actual parameters' values and sends the copies to the method where they become the values of the formal parameters. Then when the method returns, those copies are discarded and the actual parameters have remained unchanged.