The Application Of Design Pattern In The HTML Compiler

In the software engineer field Design Pattern is the hotspot during the recent years. The publication of GOF`s Design Pattern bring the interest about the Design Pattern. Design Pattern help people to exceed the single conception design, to grasp the important structure and to estimate strategy about the renovation with the successful solution. Software pattern is the rule formed by three parts, which express the relationship among some kind environment, the pressure system under that and the software configuration to release the pressure. Pattern is aimed the repeated problems. If the problem is single, the solution can not be abstracted as a pattern. Design pattern come from the successful solution experience. Design pattern grasp the soul in the successful solution, which did not include the technical detail. The agile use of Design Pattern can solve the problem with software reuse and the software maintenance.Oriented-Object technology had been made use of in the software field, but which still had some shortage in the system building process. This article analyzed the Coad means and found a new way to build the system, which via the use of Design Pattern on different level and combination of pattern and software requirement to incessant detail the software design.This article researched the software reuse and software maintenance. Software structure became more and more complicated. During the process of system building and even after the building, the rigidity of the system structure made the maintenance more difficulty. Software reuse is another hotspot in software field. During the process of unit building, the relationship among units is too much. When we want to reuse a unit, we should prepare lots of pre-condition for the unit reuse. This article hope that the use of Design Pattern to build an agile structure for software system.This article simply introduced Unified Model Language to offer an expression method for Design of pattern. All the Design Patterns in this article are expressed by the Unified Model Language.In the appliance field, the author of this article analysis the specialty, and make use of the specialty to create the condition for the use of Design Pattern. In the program the author apply observer pattern, composite pattern, factory pattern and singleton pattern.