用JAVA开发的词法分析器，编译原理课程设计，主要实现以下功能：1.巩固对词法分析的基本功能和原理的认识。

2.能够应用自动机的知识进行词法分析。

3.理解并处理词法分析中的异常和错误。

-JAVA development lexical analyzer, compiler theory curriculum design, the main achievement of the following features: 1. Consolidate the basic understanding of the functions and principles of lexical analysis. Able to apply knowledge of automata for lexical analysis. 3. Understanding and treatment of anomalies and errors in the lexical analysis.