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Tip of the Day
Language: Java
Expertise: Beginner
Aug 11, 2000

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Building the Right Environment to Support AI, Machine Learning and Deep Learning


File Deletion

Question:
I'm opening a file for reading, and after reading its contents I write it all to other file. Now I want to delete the original file. How do I this?

Answer:
When you use FileInputStream and FileOutputStream a lot to do file I/O, it's easy to forget about the java.io.File class. The File class allows you to reference files and do things like rename and delete them. Deleting a file is as simple as creating a File instance and invoking its delete method. For example:

File file = new File("deleteme.txt");

if(file.delete()) {
  // The file was deleted
} else {
  // The file was not deleted
}
The delete method returns true if the file was successfully deleted and false if it was not. A file might not be deleted if it doesn't exist or you have insufficient permission to delete it. In runtime environments running a security manager, such as a Web browser's applet sandbox, a SecurityException may be thrown if file deletion is an operation denied to your application.
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