(It is very suitable for JAVA development practical courses from introductory learning to actual combat. The overall content of the course has been redesigned. After completing the course, students can have a clear understanding of the overall process of JAVA development. In the process of course explanation, many engineering cases and experience project summaries were incorporated, which improved the teaching quality of the course. At the same time, the course also comes with all course materials, including course handouts, course notes, code used in the course. It is very suitable for beginners and JAVA lovers to learn and learn.)