There is a need to increase the quantity and quality of the treatment of testing in the curriculum because 100% of instruction is spent on the process of developing software, and very little to how to test software. Furthermore, instructors and teaching assistants are overburdened with work while teaching courses and have little time to devote to additional assessment activities. On large courses, providing feedback on several programming assignments requires automatic assistance. As in the Computer Science Department at King Saud University they have 150 students enrolled in (CSC112) an introductory java programming course which requires a lot of work from the instructors and teaching assistants to assess each student’s work with the same standards. The obvious benefits of using automatic assessment tool to assess the students programs are objectivity, consistency and speed of assessment. This project aims to design and Implement an automated black-box (functional) testing tool for student’s programs in an introductory Java programming course and investigate the impact of using automated testing tool in both students and educators.