Creating a temporary file

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Creating a temporary file

In this section, you will learn how to create the temporary file in java.

In this section, you will learn how to create the temporary file in java.

Java Temporary File - Temporary File Creation in Java

     

In this program we are going to make a temporary file, which will be deleted automatically by the garbage collector when the program ends.

In this program we are using following methods:

createTempFile(String prefix, String suffix): This is a static method of file class. This creates an empty file and we have used two parameters to generate name.

write(): It will write in String.

close(): When we don't need to write further, we should close the program with() that will close the string.

deleteOnExit(): It will delete the existing file when you close the java program or your JVM.

Code of this program is given below:

import java.io.*;

public class CreateTemporaryFile{
  CreateTemporaryFile(){
  }
  public static void CreateTempFile(){
  try{
  // Create a temporary file object
  File tempFile = File.createTempFile("prefix", "suffix");
  System.out.println("\nTemporary file file has 

been created : " + tempFile + "\n");
  // Write to temporary file
  BufferedWriter out = new BufferedWriter(new 

FileWriter(tempFile));
  out.write("You are writing on temporary file 

which will delete on exit : " + tempFile);
  out.close();
 // Delete temp file when program exits
  tempFile.deleteOnExit();
  } 
  catch (IOException e){
  System.out.println("Exception is" + e);
  }
  }
  public static void main(String[] args){
  CreateTempFile();
  }

}

The output of this program is given below:

C:\ CreateTemporaryFile>java CreateTemporaryFile

Temporary file file has been created : C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\prefix3
2276suffix


C:\tapan>

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