相关疑难解决方法(0)

请考虑以下示例Java类(下面的pom.xml):

package test.filedelete;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;

import org.apache.commons.io.IOUtils;

public class Main
{
    public static void main(String[] args) throws IOException
    {
        byte[] bytes = "testtesttesttesttesttesttesttesttesttest".getBytes();
        InputStream is = new ByteArrayInputStream(bytes);

        Path tempFileToBeDeleted = Files.createTempFile("test", "");
        OutputStream os = Files.newOutputStream(tempFileToBeDeleted);
        IOUtils.copy(is, os);

        deleteAndCheck(tempFileToBeDeleted);

        // breakpoint 1
        System.out.println("\nClosing stream\n");

        os.close();

        deleteAndCheck(tempFileToBeDeleted);
    }

    private static void deleteAndCheck(Path file) throws IOException
    {
        System.out.println("Deleting file: " + file);
        try
        {
            Files.delete(file);
        }
        catch (NoSuchFileException e) …

我有以下代码,我需要捕获AccessDeniedException异常

import java.io.PrintWriter;
import java.io.IOException;
import java.nio.file.AccessDeniedException;

class MyFileClass {
  public void write()
    throws IOException
  {
    PrintWriter out = new PrintWriter("sample.txt");

    out.printf("%8.2f\n", 3.4);

    out.close();

  }
}

public class MyClass {
  public static void main(String[] args)
    throws Exception
  {
    try {
      MyFileClass mf = new MyFileClass();
      mf.write();
    } catch (AccessDeniedException e) {
      print("Access denided");
    }
    catch (FileNotFoundException e) {
      print("File not found");
    }
  }
}

如果sample.txt是只读的,我输出为" 找不到文件 "而不是" 访问已拒绝 ".我想了解这是什么原因？另外,上面的结构是否AccessDeniedException正确捕捉？

我正在做一个java.nio.file.Files.move(path, path.resolveSibling("newfilename"))重命名Windows 7上的目录.

但我得到以下异常:

java.nio.file.AccessDeniedException: oldfilename -> newfilename
    at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83)
    at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
    at sun.nio.fs.WindowsFileCopy.move(WindowsFileCopy.java:387)
    at sun.nio.fs.WindowsFileSystemProvider.move(WindowsFileSystemProvider.java:287)
    at java.nio.file.Files.move(Files.java:1345)

是什么造成的？我正在使用Java 7.
在调用之前目标路径不存在Files.move().

UPDATE

来自javadoc:

When moving a directory requires that its entries be moved then this method fails
(by throwing an IOException).

我的目录是非空的并且包含常规文件,所以也许这就是它不能在这里使用的原因？我在理解"要求移动其条目"的措辞方面遇到了问题.这是什么情况？