Java文件删除和System.gc（） [英] Java file delete and System.gc()

问题描述

在我的应用程序中，我正在写一个文件来存储一些执行信息，一旦执行完成，我想删除临时文件。问题是甚至在文件关闭或清理后，我无法删除文件。我试过

pre $ Thread.sleep（1000）;
file.delete（）;


并且没有删除文件。然后我创建了一个while循环while循环

  while（！file.delete（））
 Thread.sleep（1000）; 
  

并且一直循环。然后我添加了

  System.gc（）; 
 file.delete（）; 
  

它起作用了!!!

我已经证实，我已经优雅地关闭或刷新文件。我想知道为什么我的代码与 System.gc（）？

解决方案

这似乎表明你没有调用 close（）。

原因：在java开始的时候，使用 Object.finalize（）方法来清理垃圾回收，而对于I / O，它做了一个 close（）。

直到文件被使用（不关闭），文件不能在Windows上被删除。 p>

In my app I'm writing a file to store some execution info and once the execution is done I want to delete the temp file. The issue is even after file close or flush by streams I cannot delete the file. I tried

Thread.sleep(1000);
file.delete();

and that didn't delete the file either. I then created a while loop

while(!file.delete())
   Thread.sleep(1000);

and it was looping forever. I then added

System.gc();
file.delete();

and it worked!!!

I have verified that I have gracefully closed or flushed the file. I want to know why my code worked with System.gc()?

解决方案

That seems to indicate that you did not call close().

Reason: in the begin time of java, the Object.finalize() method was used to clean up on garbage collection, and for I/O it did a close().

Until the file is in use (not closed), the file cannot be deleted on Windows.

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