Java-Directory-Creator2.txt:

Other cited examples:  https://jenkov.com/tutorials/java-io/file.html
Use of File.Separators: https://www.w3docs.com/snippets/java/when-should-i-use-file-separator-and-when-file-pathseparator.html
Use of the assert keyword: https://www.w3docs.com/snippets/java/what-does-the-java-assert-keyword-do-and-when-should-it-be-used.html


The mkdir() method is a part of File class. The mkdir() function is used to create a new directory denoted by the abstract pathname. The function returns true if directory is created else returns false.

Function Signature:

public boolean mkdir()
Syntax:

file.mkdir()
Exception: This method throws SecurityException if the method does not allow directory to be created

Below programs will illustrate the use of mkdirs() function:

Example 1: Try to create a new directory named program in “f:” drive.
// Java program to demonstrate 
// the use of File.mkdirs() method 
  
import java.io.*; 
  
public class GFG { 
  
    public static void main(String args[]) 
    { 
        // create an abstract pathname (File object) 
        File f = new File("F:\\program"); 
  
        // check if the directory can be created 
        // using the abstract path name 
        if (f.mkdir()) { 
  
            // display that the directory is created 
            // as the function returned true 
            System.out.println("Directory is created"); 
        } 
        else { 
            // display that the directory cannot be created 
            // as the function returned false 
            System.out.println("Directory cannot be created"); 
        } 
    } 
} 
Output: Directory is created

Example 2: Try to create a new directory named program1 in “f:\program” directory, 
but program directory is not created .we will test whether the function mkdir() can create 
the parent directories of the abstract path name if the directories are not present.
// Java program to demonstrate 
// the use of File.mkdir() method 
  
import java.io.*; 
  
public class GFG { 
  
    public static void main(String args[]) 
    { 
  
        // create an abstract pathname (File object) 
        File f = new File("F:\\program\\program1"); 
  
        // check if the directory can be created 
        // using the abstract path name 
        if (f.mkdir()) { 
  
            // display that the directory is created 
            // as the function returned true 
            System.out.println("Directory is created"); 
        } 
        else { 
            // display that the directory cannot be created 
            // as the function returned false 
            System.out.println("Directory cannot be created"); 
        } 
    } 
} 
Output: Directory cannot be created
========================================================
File mkdirs() method in Java with examples
The mkdirs() method is a part of File class. The mkdirs() function is used to create a new directory denoted by the abstract pathname and also all the non existent parent directories of the abstract pathname. If the mkdirs() function fails to create some directory it might have created some of its parent directories. The function returns true if directory is created else returns false.

Function Signature: public boolean mkdirs()
Syntax:

file.mkdirs()
Parameters: This method does not accept a parameter.
Return Value: The function returns boolean data type. The function returns true if directory is created else returns false.
Exception: This method throws SecurityException if the method does not allow directory to be created
Below programs will illustrate the use of mkdirs() function:
Example 1: Try to create a new directory named program in “f:” drive.

// Java program to demonstrate 
// the use of File.mkdirs() method 
import java.io.*; 
  
public class GFG { 
  
    public static void main(String args[]) 
    { 
  
        // create an abstract pathname (File object) 
        File f = new File("F:\\program"); 
  
        // check if the directory can be created 
        // using the abstract path name 
        if (f.mkdirs()) { 
  
            // display that the directory is created 
            // as the function returned true 
            System.out.println("Directory is created"); 
        } 
        else { 
  
            // display that the directory cannot be created 
            // as the function returned false 
            System.out.println("Directory cannot be created"); 
        } 
    } 
} 
Output: Directory is created
Example 2: Try to create a new directory named program1 in “f:\program” directory, 
but program directory is not created. 
We test the function mkdirs() to create the parent directories 
of the abstract pathname if the directories are not present.

// Java program to demonstrate 
// the use of File.mkdirs() method 

import java.io.*; 
  
public class GFG { 
  
    public static void main(String args[]) 
    { 
        // create an abstract pathname (File object) 
        File f = new File("F:\\program\\program1"); 
  
        // check if the directory can be created 
        // using the abstract path name 
        if (f.mkdirs()) { 
  
            // display that the directory is created 
            // as the function returned true 
            System.out.println("Directory is created"); 
        } 
        else { 
            // display that the directory cannot be created 
            // as the function returned false 
            System.out.println("Directory cannot be created"); 
        } 
    } 
} 
Output: Directory is created
The programs might not work in an inline IDE.