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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>

Download this example

                         

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