Create a temporary file - A Java Code Example

Do you need help with your Java programming?

Click here for instant help with your Java code.

Sometimes it come in handy to create a temporary file.
Here we create a temporary file with the prefix "temp_" as shown by the first parameter.
The second parameter is an optional suffix, if it\'s null as in the example, .tmp will be
used by default.
Optionally a third parameter can be defined pointing out the directory in which the file will
be created. If not specified (as below), the default temporary directory will be used.

import java.io.File;
import java.io.IOException;

public class FileUtil {

  public void createTemporaryFile(String filename) {

    try {

      //Create the temp file
      File f = File.createTempFile("temp_", null);

      //Check where the default temp dir is located
      System.out.println(f.getAbsolutePath());

      //Delete the file when the program exists
      f.deleteOnExit();

      //Place any processing of the file here
      // ...

    }
    catch (IOException ex) {
      ex.printStackTrace();
    }
  }

  public static void main(String[] args) {
    FileUtil fileutil = new FileUtil();
    fileutil.createTemporaryFile("myfile.txt");
  }
}

Do you know your Java?
Take a Ten-Question-Java-Quiz!

Search for code examples on this site

Need help with your Java code? It's secure and confidential.

This is how it works:

Send a detailed description of what you need help with, the more details the better. Also provide a deadline for when it has to be finished. More time means better chance of putting your request into the schedule.

If the request is serious you will shortly receive an email with the price, to which you have to respond if you accept.

Once you have accepted, the work will begin on developing your code by an experienced Java developer. When the code is finished a link to a secure payment will be sent to you.

The source code is then sent to you once the payment is completed.

IMPORTANT! The request needs to be very detailed, else it may be ignored.

Write your detailed request here:

E-mail address: