如何遍历JTree中的文件？

Question

我想找到一个文件，使用JTree结构提供它的属性。这是我的代码：`

public File compare_With_TreeFolder(File redFile, File redFolder) throws IOException, Exception {
    String[] folderContents = redFolder.list();
    System.out.println(folderContents.length);
    File file_Folder;
    for (String str : folderContents) {
        file_Folder = new File(str);
        System.out.println(file_Folder.getName() + " and " + file_Folder.getName().startsWith("."));
        if (!file_Folder.getName().startsWith(".")) {
            if (file_Folder.isDirectory()) {
                compare_With_TreeFolder(redFile, file_Folder);
            }else{
                return file_Folder;
            }

        }
    }
    return null;
}

任何想法。