🚀 go-pugleaf

import java.io.*;

public class TestBufferedStreams {
  public static void main(String[] args) {
    try {
      FileReader     input     = new FileReader(args[0]);
      BufferedReader bufInput  = new BufferedReader(input);
      FileWriter     output    = new FileWriter(args[1]);
      BufferedWriter bufOutput = new BufferedWriter(output);
      String line,wline;
      StringBuffer buf;
      int count=0;
      
      buf=new StringBuffer();

      // read the first line
      line = bufInput.readLine();

      while ( line != null ) {
    // write the line out to the output file
    count++;
    if(count!=5)
       buf.append(line+"\t");
    else {
       count=0;
       buf.append(line+"\n");
       //System.out.println(buf);
         
       line=buf.toString();//?--����Ҫ������

       bufOutput.write(line, 0, line.length());
       buf=new StringBuffer();//-----������Ҫ������
        }
    

    // read the next line
    line = bufInput.readLine();
      }

      bufInput.close();
      bufOutput.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}
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