java 扫描指定目录，获取目录下所有文件

public  static  void  main( String[] args ){//读取目录String filePath = "C:\\Users\\meng\\Desktop\\dddd\\";String outFilePath = "C:\\Users\\meng\\Desktop\\cccc\\";File file=new File(filePath);File[] tempList = file.listFiles();System.out.println("该目录下对象个数："+tempList.length);for (int i = 0; i < tempList.length; i++) {if (tempList[i].isFile()) {File tempFile = tempList[i];String fileName = tempFile.getName();int index = fileName.lastIndexOf('.');String ext = fileName.substring(index+1, fileName.length());String nameExceptExt = fileName.substring(0, index);dicom2Jpg( outFilePath, nameExceptExt, "jpg", tempFile  );}}
}