在java中删除临时文件 [英] delete temporary file in java

问题描述

在Java中创建临时文件，但我无法删除它。这是我写的代码：

  temp = File.createTempFile（temp，.txt）; 
 temp.deleteOnExit（）; 
 fileoutput = new FileWriter（temp）; 
 buffout = new BufferedWriter（fileoutput）; 
  

解决方案

添加下面的代码与文件）：

  buffout.close（）; 
 fileoutput.close（）; 
 temp.delete（）; 
  

只要文件上的某个数据流打开，它就会被锁定（至少在windows- JVM的实现）。所以它不能被删除。

最好的做法是检查所有打开的流在使用后是否再次关闭，因为这是一个糟糕的内存泄漏情况。您的应用程序甚至会吃掉所有可用的文件句柄，这可能导致系统不可用。

I'm creating temporary file in java but i'm unable to delete it. This is the code I have written:

temp = File.createTempFile("temp", ".txt");
temp.deleteOnExit();
fileoutput = new FileWriter(temp);
buffout = new BufferedWriter(fileoutput);

解决方案

Add the following code (after you have done your operations with the file):

buffout.close();
fileoutput.close();
temp.delete();

As long as some stream on the file is open, it is locked (at least on the windows-implementation of the JVM). So it cannot be deleted.

It is good practice always to check if all opened streams get closed again after usage, because this is a bad memory-leak-situation. Your application can even eat up all available file-handles, that can lead to an unusable system.

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