java - 没有找到适合 File(file) 的构造函数

Question

我一直到那里错误:

    error: no suitable constructor found for File(File)
            File file = new File(testFile);
                        ^
constructor File.File(String,int) is not applicable
  (actual and formal argument lists differ in length)
constructor File.File(String,File) is not applicable
  (actual and formal argument lists differ in length)
constructor File.File(String) is not applicable
  (argument mismatch; File cannot be converted to String)
constructor File.File(String,String) is not applicable
  (actual and formal argument lists differ in length)
constructor File.File(File,String) is not applicable
  (actual and formal argument lists differ in length)
constructor File.File(URI) is not applicable
  (argument mismatch; File cannot be converted to URI)

我不明白错误告诉我什么，有人可以解释一下吗？ 这是我的代码:

    public ShortenWord( File testFile ) {
    try {
        File file = new File(testFile);
        Scanner in = new Scanner(file);

        List originalWords = new List();
        List abbWords = new List();

        while (in.hasNextLine())
        {
            String line = in.nextLine();
            String[] parts = line.split(",");
            String originalWord = parts[0];
            String abbWord = parts[1];
        }
    }
catch (FileNotFoundException e)
    {
        System.out.println(e);
    }
}

如能提供有关如何修复此错误的任何帮助，我们将不胜感激。因为我不知道 :)

Answer 1

文件构造函数期望文件路径名作为单个参数的字符串。您不应该在 File 构造函数中传递另一个文件对象。

File file = new File("somefilename.txt");