How to create a temporary file in Java

Problem Description

How to create a temporary file?

Solution

This example shows how to create a temporary file using createTempFile() method of File class.

import java.io.*;

public class Main {
   public static void main(String[] args) throws Exception {
      File temp = File.createTempFile ("pattern", ".suffix");
      temp.deleteOnExit(); 
      BufferedWriter out = new BufferedWriter (new FileWriter(temp));
      out.write("aString");
      System.out.println("temporary file created:");
      out.close();
   }
}

Result

The above code sample will produce the following result.

temporary file created:

The following is another sample example of create a temporary file in java

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

public class CreateTempFileExample { 
   public static void main(String[] args) { 
      try { 
         File f1 = File.createTempFile("temp-file-name", ".tmp");
    	   System.out.println("Temp file : " + f1.getAbsolutePath());
      } catch(IOException e) { 
         e.printStackTrace();
      } 
   }
}

The above code sample will produce the following result.

Temp file : C:\Users\TUTORI~1\AppData\Local\Temp\temp-file-name3671918809488333932.tmp