java文件夹遍历

import java.io.File;
import java.util.ArrayList;

public class FileUtil {
    private static ArrayList filelist = new ArrayList();

    public static void main(String[] args) {
        long a = System.currentTimeMillis();
        refreshFileList("c:\\java");
        System.out.println(System.currentTimeMillis() - a);
    }

        //遍历文件夹
    public static void refreshFileList(String strPath) {
        File dir = new File(strPath);
        File[] files = dir.listFiles();
        if (files == null) {
            return;
        }
        for (int i = 0; i < files.length; i++) {
            if (files[i].isDirectory()) {
                refreshFileList(files[i].getAbsolutePath());
            } else {
                String strFileName = files[i].getAbsolutePath().toLowerCase();
                System.out.println("---" + strFileName);
                filelist.add(files[i].getAbsolutePath());
            }
        }
    }
    
        /**
     * 获取上传文件夹 -- added by dingzh@2010.04.14
     * @return
     * @throws Exception
     */
    public String getUploadFolder() throws Exception {
        String uploadPath = SystemConfig.getParameter("baseex.uploadfiles.path");
        try {
            java.io.File myFilePath = new java.io.File(uploadPath);
            if(!myFilePath.exists())
                myFilePath.mkdir();
        }
        catch(Exception e) {
            throw e;
        }
        return uploadPath;
    }

}