J2ee Kernel-mode Applications

The paper mainly makes research of Core J2EE patterns. It discusses the reusable solution way of designing and developing on J2EE platform. Each of patterns has own scope of application. So as to these patterns, this paper makes analysis about their advantages, scope of application, solution and flow chart. At the same time, complicated relations exist between these Core J2EE patterns; these relations are also an important part of design skill. Giving the discussing about it, the paper makes research about how to choose the suitable design pattern and how to combine these patterns more efficiently, in which way can help to make the system architecture more stable and security. It's an important factor of patterns and also is what this paper mainly makes research in.In this paper, design pattern and J2EE technology is firstly introduced and then it discusses the relationship of J2EE and design pattern. Then it makes research in several core J2EE patterns and analyses their solution. And then discusses about the combination of J2EE patterns and makes research of the improvements of the architecture taking advantage of these patterns. It helps developers to grasp the design patterns more deeply by studying their relationship and can combine them together to improve the system architecture. An example based on J2EE architecture is described at the end of the paper. The paper makes out how to make efficient selection of these design patterns and how to combine patterns synthetically more efficiently by demonstration of this example.