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Create File in Java

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In this section, you will see how to create file in java.

Create a File 

     

Introduction

Whenever the data is need to be stored, a file is used to store the data. File is a collection of stored information that are arranged in string, rows, columns and lines etc.
In this section, we will see how to create a file. This example takes the file name and text data for storing to the file.

For creating a new file File.createNewFile( ) method is used. This method returns a boolean value true if the file is created otherwise return false. If the mentioned file for the specified directory is already exist then the createNewFile() method returns the false otherwise the method creates the mentioned file and return true. 

Lets see an example that checks the existence of  a specified file.

import java.io.*;

public class CreateFile1{
  public static void main(String[] args) throws IOException{
  File f;
  f=new File("myfile.txt");
  if(!f.exists()){
  f.createNewFile();
  System.out.println("New file \"myfile.txt\" has been created 
  to the current directory"
);
  }
  }
}

First, this program checks, the specified file "myfile.txt" is exist or not. if it does not exist then a new file is created with same name to the current location. 

Output of the Program

C:\nisha>javac CreateFile1.java

C:\nisha>java CreateFile1
New file "myfile.txt" has been created to the current directory

C:\nisha>

If you try to run this program again then after checking the existence of the file, it will not be created and you will see a message as shown in the output.

C:\nisha>javac CreateFile1.java

C:\nisha>java CreateFile1
The specified file is already exist

C:\nisha>

Download this Program

 

 

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Posted on: April 16, 2007

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Comments:14
tonio
March 1, 2012
pokemon tower defense BW

love java
Mary Lois Dela Cruz
March 2, 2012
STVE CLASS

i love my all subject teachers and my classmate
Anup
March 19, 2012
can remove is exist checck

In above code, condition if(!f.exists()) is not required, since createNewFile() API creates new file only if file with name specified does not exist
Nikita
June 29, 2012
Thank you!

Wow helped a lot :D thanks
ananthi
September 20, 2012
java

file & streams in java
mansur
September 25, 2012
createNew FIle

it doesn't work.. It says, it needs exception
neeravi
October 6, 2012
ques

the above program doesn't return the statement as you mentioned above when it compile and run the second time
neeravi
October 6, 2012
code

if we want to get the above 2nd result, we have to write a code like this, import java.io.*; public class CreateFile1{ public static void main(String[] args) throws IOException{ File f; f=new File("myfile.txt"); if(!f.exists()){ f.createNewFile(); System.out.println("New file \"myfile.txt\" has been created to the current directory"); } else System.out.println("\n the file is already exists"); } }
antonis
October 14, 2012
minecraft

good
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