display.java

C语言实现的SIMPLE语言词法分析器

/*
 * 创建日期 2005-10-23
 * 
 * 作者 柳锋
 */
package complier.java;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;

import javax.swing.JTextArea;

public class Display  
{
    private JTextArea jta;
    private String filename;
    
    public Display(JTextArea jta,String filename)
    {
        this.jta=jta;
        this.filename=filename;
        display();
    }
    
    private void display()
    {
        try
        {
            File file=new File("D:\\java\\work\\complier\\complier\\c",filename);
            FileReader fr=new FileReader(file);
      	 	BufferedReader br=new BufferedReader(fr);
      	 	String temp,content="";
      	 	int i=1;
      	 	while((temp=br.readLine())!=null)
      	 	{
      	 	    content+=(""+i+" "+temp+"\n");
      	 	    i++;
      	 	}
      	 	fr.close();
      	 	br.close();

      	 	jta.setText(content);
      	 	jta.setSelectionStart(0);
            jta.setSelectionEnd(0);
            
        }catch(Exception e)
        {
            e.printStackTrace();
        }
    }
    public static void main(String[] args)
    {
        new Display(new JTextArea(),new String("input.txt"));
    }

}