/**

 *

 * @author outofmemory.cn

 */

public class FileUtil {

    // create a FileFilter and override its accept-method

    FileFilter filefilter = new FileFilter() {

        public boolean accept(File file) {

            // if the file extension is .txt return true, else false

            if (file.getName().endsWith(".png")) {

                return true;

            }

            return false;

        }

    };

    public void myListFiles(String dir) {

        File directory = new File(dir);

        if (!directory.isDirectory()) {

            System.out.println("No directory provided");

            return;

        }

        File[] files = directory.listFiles(filefilter);

        System.out.println(123);

        for (File f : files) {

            System.out.println(f.getName());

        }

    }

    public static void main(String[] args) {

        FileUtil fileutil = new FileUtil();

        fileutil.myListFiles("E:\\Clusters");

    }

}