ch.java

编译原理的课程设计,词法分析器,基于java jdk1.4做的,有源码和bat文件可直接运行

import java.io.*;
import java.util.*;
public class ch{
	public static void main(String args[])
	{
	 String s="//aaaaa;+sf asf-fasdfasdf*/safddsaf%|sfddasdf&asfdasf!";
	 System.out.println(s.substring(0,1));
	 StringTokenizer fenxi=new StringTokenizer(s," +-*/|&");
	 while(fenxi.hasMoreTokens())
	 {
	 	String s1=fenxi.nextToken();
	 	System.out.println(s1);
	 }
	 char c='=';
	 if(c=='=')
	 System.out.println(c);
	Cframe cf=new Cframe("aa");
	         			
	}
}