java ²é¿´Îļþ¼ÐÏÂÃæËùÓÐÎļþÒÔ¼°Îļþ¼Ð

import java.io.File;
import java.util.Date;
import java.util.Iterator;
import java.util.Vector;
import java.text.SimpleDateFormat;
public class FileViewer {
  File myDir;
  File[] contents;
  Vector vectorList;
  Iterator currentFileView;
  File currentFile;
  String path;
  public FileViewer() {
    path = new String("");
    vectorList = new Vector();
  }
  public FileViewer(String path) {
    this.path = path;
    vectorList = new Vector();
  }
  /**
   * ÉèÖÃä¯ÀÀµÄ·¾¶
   */
  public void setPath(String path) {
    this.path = path;
  }
  /***
   * ·µ»Øµ±Ç°Ä¿Â¼Â·¾¶
   */
  public String getDirectory() {
    return myDir.getPath();
  }
  /**
   * Ë¢ÐÂÁбí
   */
  public void refreshList() {
    if (this.path.equals("")) {
      path = "c:\\";
    }
    myDir = new File(path);
    vectorList.clear();
    contents = myDir.listFiles();
    //ÖØÐÂ×°Èë·¾¶ÏÂÎļþ
    for (int i = 0; i < contents.length; i++) {
      vectorList.add(contents[i]);
    }
    currentFileView = vectorList.iterator();
  }
  /**
   * Òƶ¯µ±Ç°Îļþ¼¯ºÏµÄÖ¸ÕëÖ¸µ½ÏÂÒ»¸öÌõÄ¿
   * @return ³É¹¦·µ»Øtrue,·ñÔòfalse
   */
  public boolean nextFile() {
    while (currentFileView.hasNext()) {
      currentFile = (File) currentFileView.next();
      return true;
    }
    return false;
  }
  /**
   * ·µ»Øµ±Ç°Ö¸ÏòµÄÎļþ¶ÔÏóµÄÎļþÃû³Æ
   */
  public String