Java.io.File.createNewFile() Method

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Description

The java.io.File.createNewFile() method atomically creates a new file named by this abstract path name. FileLock facility should be used instead of this method for file-locking as the resulting protocol cannot be made to work reliably.

Declaration

Following is the declaration for java.io.File.createNewFile() method:

public boolean createNewFile()

Parameters

  • NA

Return Value

This method returns true, if the named file does not exist and was successfully created. The method returns false if the file exists.

Exception

  • IOException -- If an I/O error occurs

  • SecurityException -- If SecurityManager.checkWrite(java.lang.String) method denies write access to the file

Example

The following example shows the usage of java.io.File.createNewFile() method.

package com.tutorialspoint;

import java.io.File;

public class FileDemo {
   public static void main(String[] args) {
      
      File f = null;
      boolean bool = false;
      
      try{
         // create new file
         f = new File("test.txt");
         
         // tries to create new file in the system
         bool = f.createNewFile();
         
         // prints
         System.out.println("File created: "+bool);
         
         // deletes file from the system
         f.delete();
         
         // delete() is invoked
         System.out.println("delete() method is invoked");
         
         // tries to create new file in the system
         bool = f.createNewFile();
         
         // print
         System.out.println("File created: "+bool);
            
      }catch(Exception e){
         e.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result:

File created: false
delete() method is invoked
File created: true



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