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import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.sql.Timestamp;
import java.util.Arrays;
public class SmallToBig {
 private String newFileName;// ÐÂÎļþÃû×Ö
 private String filterName;// ¹ýÂ˹æÔòÃû×Ö
 private String oldFileName;// ÀÏÎļþÃû×Ö
 public SmallToBig(String oldFileName, String newFileName, String filterName) {
  this.newFileName = newFileName;
  this.filterName = filterName;
  this.oldFileName = oldFileName;
 }
 public void unite() {
  Timestamp startTime = null; // »ñµÃϵͳµÄ¿ªÊ¼Ê±¼ä
  Timestamp endTime = null; // »ñµÃϵͳµÄ½áÊøʱ¼ä
  startTime = new Timestamp(System.currentTimeMillis());
  String[] fileNameTemp;
  File inFile = new File("F:\\workspace\\glpt\\database\\temporaryfiles"); //ÁÙʱÎļþËùÔÚµÄĿ¼
  File outFile = new File(newFileName); // È¡µÃÊä³öÎļþµÄÃû×Ö
  RandomAccessFile outt = null;
  byte[] bytes = new byte[2048];
  try {
   outt = new RandomAccessFile("F:\\workspace\\glpt\\database\\data\\"
     + outFile, "rw");
   // È¡µÃ·ûºÏÌõ¼þµÄÎļþÃû
   fileNameTemp = inFile.list(new FilenameFilter() {
    public boolean accept(File dir, String name) {
     System.out.println("dir = " + dir);
     System.out.println("name = " + name);
     String rr = new File(name).toString();
     return rr.endsWith(filterName);
    }
   });
   Arrays.sort(fileNameTemp);// ¶ÔÎļþÃûÅÅÐò
   // ´ò¿ªËùÓеÄÎļþÔÙдÈëµ½Ò»¸öÎļþÀï
   for (int i = 0; i < fileNameTemp.length; i++) {
    for (int j = 0; j < fileNameTemp.length; j++) {
     if (fileNameTemp[j].equals(oldFileName + i + filterName)) {
      Sys