2 to 4 batch : 28 - JUNE - 2018

import java.io.File;
import java.util.Date;
import java.util.Scanner;

public class TheFileClass01
{
public static void main(String[] args)
{
// create object of scanner class to get input from keyboard
Scanner sc = new Scanner(System.in);

System.out.print("Input a path: ");
String path = sc.nextLine();

// create object of file class to denote this path
File f = new File(path);

// check if path is correct
if (f.exists())
{
System.out.println("path is correct");

// check if path is of file
if (f.isFile())
{
System.out.println("it is a file");

// get size of file
long filesize = f.length();

System.out.println("size of file is " + filesize + " bytes");

// get last modification time of file
long time = f.lastModified();

// convert milliseconds into actual date and time
Date date = new Date(time);
System.out.println("file modified at " + date);
}

// check if path is of a directory
if (f.isDirectory())
{
System.out.println("it is a directory");
}
} // end of outer if block

// this else will be executed if path is not correct
else
{
System.out.println("path is not correct");
}

}
}

# # # # # # # # # # # # # # # # # # # #

import java.io.File;
import java.util.Date;
import java.util.Scanner;

public class TheFileClass02
{
public static void main(String[] args)
{
// create object of scanner class to get input from keyboard
Scanner sc = new Scanner(System.in);

System.out.print("Input a path: ");
String path = sc.nextLine();

// create object of file class to denote this path
File f = new File(path);

// lets create a directory inside this path
if(f.mkdir())
{
System.out.println("directory created");
}
else
{
System.out.println("directory already exists");
}

}
}

# # # # # # # # # # # # # # # # # # # #

import java.io.File;
import java.util.Date;
import java.util.Scanner;

public class TheFileClass03
{
public static void main(String[] args)
{
// create object of scanner class to get input from keyboard
Scanner sc = new Scanner(System.in);

System.out.print("Input a path: ");
String path = sc.nextLine();

// create object of file class to denote this path
File f = new File(path);

// delete a resource inside this path (in order to delete
// a directory it must be empty)
if(f.delete())
{
System.out.println("resource deleted");
}
// else will be executed if resource is not deleted
else
{
System.out.println("resource cant be deleted");
}

}
}

# # # # # # # # # # # # # # # # # # # #

import java.io.File;

import java.util.Date;

import java.util.Scanner;

public class TheFileClass04 

{

public static void main(String[] args) 

{

// create object of scanner class to get input from keyboard

Scanner sc = new Scanner(System.in);

System.out.print("Input a path that need to be renamed: ");

String oldPath = sc.nextLine();

System.out.print("Input a new name: ");

String newPath = sc.nextLine();

// create object of file class to denote old path

File file1 = new File(oldPath);

// create object of file class to denote new path

File file2 = new File(oldPath);

// lets rename oldPath name into new one

if(file1.renameTo(file2))

{

System.out.println("renaming done");

}

// else will be executed if renaming not done

else

{

System.out.println("error in renaming");

}

}

}

# # # # # # # # # # # # # # # # # # # #

import java.io.File;

import java.util.Scanner;

public class TheFileClass05 

{

public static void main(String[] args) 

{

// create object of scanner class to get input from keyboard

Scanner sc = new Scanner(System.in);

System.out.print("Input a path: ");

String path = sc.nextLine();

// create object of file class to denote this path

File f = new File(path);

// lets get the name of resource (file or directory)

String name = f.getName();

System.out.println("name of resource is "+name);

// lets get the name of parent directory of resource

String parent = f.getParent();

System.out.println("parent is "+parent);

}

}

# # # # # # # # # # # # # # # # # # # #

import java.io.File;

import java.util.Date;

import java.util.Scanner;

public class TheFileClass06 

{

public static void main(String[] args) 

{

// create object of scanner class to get input from keyboard

Scanner sc = new Scanner(System.in);

System.out.print("Input a path: ");

String path = sc.nextLine();

// create object of file class to denote this path

File f = new File(path);

// lets get a list of all the resources (files and sub-directories) 

// inside this path

File[] fa = f.listFiles();

// fetch data from this array

for (int i = 0; i < fa.length; i++) 

{

// lets get the name of resource

String name = fa[i].getName();

System.out.print(name);

// check if resource is a file

if(fa[i].isFile())

{

System.out.print(", file");

}

// check if resource is a directory

if(fa[i].isDirectory())

{

System.out.print(", directory");

}

// check if resource is a hidden resource

if(fa[i].isHidden())

{

System.out.print(" << its a hidden resource");

}

// print a blank line

System.out.println();

} // end of loop

}

}