filewriter.java

java中向txt中写入信息

import java.io.*;
public class filewriter {
    public void writef(String path2)
    {
       /* try{
           File rfile=new File(path2);
           BufferedReader br=new BufferedReader(new InputStreamReader(new FileInputStream(rfile)));
           String str;
           StringBuffer sb=new StringBuffer();
           while((str=br.readLine())!=null)
           {
               sb.append(str);
           }
            System.out.println(str);
            br.close();
        }catch(IOException e)
        {
            System.out.println(e.toString());
        }*/
        String s = null;
   StringBuffer sb = new StringBuffer();
   File f = new File(path2);
  
    try {
     BufferedReader br = new BufferedReader(new FileReader(f));
     while ((s = br.readLine()) != null){
      sb.append(s);
     }
     System.out.println(sb);
    } catch (Exception e) {
     e.printStackTrace();
    }
 
}
    public static void main(String[] args) {
        // TODO code application logic here
        filewriter fw=new filewriter();
        fw.writef("D:\\project(yao)\\9_310.txt");
        
    }

}