MJava的词法规则

词法规则

1. 语言的关键字（19个）：
   class, public, static, void, main, String, extends, return, int, boolean, if, else, while, System.out.println , length, true, false, this, new
   注：关键字是保留字，并且区分大小写。

2. 语言的专用符号16个：

   "[","]","(",")","{","}",",",