java获取指定文件夹下的所有文件

public static void readfile(String filepath) throws FileNotFoundException, IOException {
                try {

                        File file = new File(filepath);
                        if (!file.isDirectory()) {
                                System.out.println("文件");
                                System.out.println("path=" + file.getPath());
                                System.out.println("absolutepath=" + file.getAbsolutePath());
                                System.out.println("name=" + file.getName());

                        } else if (file.isDirectory()) {
                                System.out.println("文件夹");
                                String[] filelist = file.list();
                                for (int i = 0; i < filelist.length; i++) {
                                        File readfile = new File(filepath + "\\" + filelist[i]);
                                        if (!readfile.isDirectory()) {
                                                System.out.println("path=" + readfile.getPath());
                                                System.out.println("absolutepath="
                                                                + readfile.getAbsolutePath());
                                                System.out.println("name=" + readfile.getName());

                                        } else if (readfile.isDirectory()) {
                                                readfile(filepath + "\\" + filelist[i]);
                                        }
                                }

                        }

                } catch (FileNotFoundException e) {
                        System.out.println("readfile()   Exception:" + e.getMessage());
                }
        }