Java apache IOUtils: how to delete a file after read it into a byte array?

Question

So I am trying to read a file into a byte array using apache common library, and then delete the file itself. But I cannot do it. can someone let me know why?

  File   aFile = new File("path_To_A_PDF_File");
  byte[] fileBytes = IOUtils.toByteArray(new FileInputStream(aFile));
  boolean result = aFile.delete();

  System.out.println("is file " + aFile.getAbsolutePath() + " deleted? " + result);

How to I delete that file? Thanks

Answer 1

您必须关闭通过以下方式打开的流：new FileInputStream（aFile）

Answer 2

The File class contains a method to help with this. Call deleteOnExit() and let the JVM clean it up for you later.

aFile.deleteOnExit();

Per the linked Javadoc,

Requests that the file or directory denoted by this abstract pathname be deleted when the virtual machine terminates.

Answer 3

I think you still have the FileInputSteam open on aFile. Try IOUtils.closeQuietly() on it (you'll need to make it a local variable instead of anonymous as you have it now).