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");
}
}
}
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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> |
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