if (file.exists()) {File[] files = file.listFiles(); if (null == files || files.length == 0) {System.out.println("資料夾是空的!"); return;} else { for (File file2 : files) { if (file2.isDirectory()) {System.out.println("資料夾:" + file2.getAbsolutePath());traverseFolder2(file2.getAbsolutePath());} else {System.out.println("檔案:" + file2.getAbsolutePath());}}}} else {System.out.println("檔案不存在!");}擴充套件資料public void traverseFolder1(String path) { int fileNum = 0, folderNum = 0;File file = new File(path); if (file.exists()) {LinkedList