Program quality represents the most significant part of software quality control that assures all characteristics of software products to satisfy the user?s explicit and implicit needs. Though software processes have to be improved to enhance software quality, In this paper we address the problems of software products at the source code level, and deal with those problems by using a coding standard. We describe a quality assurance method using coding standards in program design and implementation, and report our program quality improvement practices and observations using a Java programming coding standard.