为什么我在使用扫描仪时会收到NoSuchElementException

Question

当我运行我的代码时，我收到NoSuchElementException错误。我希望输入是一个文件路径，将传递给File类，然后传递给BufferReader。

输出：

Enter directory: 
java.util.NoSuchElementException
in java.util.Scanner.throwFor(Scanner.java:907)
in java.util.Scanner.next(Scanner.java:1416)
in test.atest(test.java:33)
in (OUWorkspace:1)

我的代码：

public void atest(){
    Scanner sc = new Scanner(System.in);
    System.out.println("Enter directory: ");
    String path = sc.next();
    String pathname = OUFileChooser.getFilename(path);
    File aFile = new File(pathname);
    BufferedReader br = null;

    try
    {
        String currentLine;
        br = new BufferedReader(new FileReader(aFile));
        currentLine = br.readLine();
        while (currentLine != null)
        {

            System.out.println(currentLine);
            currentLine = br.readLine();
        }
    }
    catch (Exception anException)
    {
        System.out.println("Error: " + anException);
    }
    finally
    {
        try
        {
            br.close();
        }
        catch (Exception anException)
        {
            System.out.println("Error: " + anException);
        }
    }
}

第33行是：String path = sc.next（）;