如何在java中创建文件（而不是文件夹）？

也许有点尴尬，但几个小时后我仍然无法用 Java 创建文件......

File file = new File(dirName + "/" + fileName);
try
{
    // --> ** this statement gives an exception 'the system cannot find the path'
    file.createNewFile();
    // --> ** this creates a folder also named a directory with the name fileName
    file.mkdirs();
    System.out.println("file != null");
    return file;
}
catch (Exception e)
{
    System.out.println(e.getMessage());
    return null;
}

我在这里缺少什么？

首先尝试创建父目录：

File file = new File(dirName + File.separator + fileName);
try {
    file.getParentFile().mkdirs();
    file.createNewFile();
    System.out.println("file != null");
    return file;
}
catch (Exception e)
{
    System.out.println(e.getMessage());
    return null;
}