The paper describes the design of a web based intelligent tutoring system for teaching Java objects to students to overcome the difficulties they face. The basic idea of this system is a systematic introduction into the concept of Java objects. The system presents the topic of Java objects and administers automatically generated problems for the students to solve. The system is dynamically adapted at run time to the student’s individual progress. The system provides explicit support for adaptive presentation constructs. An initial evaluation study was done to investigate the effect of using the intelligent tutoring system on the performance of students enrolled in computer science III in the Faculty of Engineering and Information technology at Al-Azhar University, Gaza. The results showed a positive impact on the evaluators.