Aiming at the pain points of Java course teaching process, the teaching model of the course is reformed and innovated. The course deeply integrates PBL and OBE to build a teaching model of multiple integration based on Golden Class. O2O teaching platform is used to divide traditional classes into online and offline mixed teaching. According to the standard of "Golden Class", the innovation reform is carried out from the diversification of curriculum resources, teaching methods, assessment mechanism, curricu‐ lum ideology and politics. The curriculum naturally integrates with the curriculum ideology and politics with local characteristics in teaching, which not only pays attention to students' knowledge generation, but also pays more attention to students' practical ability. It has established a diversified examination mechanism, to strengthen the interaction between teachers and students, and cultivate stu‐ dents' computational thinking and innovation ability.