Java Determine Directory

Determine if file or directory exists

import java.io.*;

public class DetermineIfFileExists

 {                                    

public static void main(String[] args)

{

File file = new File("C://FileIO/ExistsDemo.txt");

boolean blnExists = file.exists();

System.out.println("Does file " + file.getPath() + " exist ?: " + blnExists);

   }

}

  

Get Absolute path of the file

import java.io.*;

public class GetAbsoluteFilePath

{

public static void main(String[] args)

{

String filePath = File.separator + "JavaExamples" + File.separator + "IO"; File file = new File(filePath);

System.out.println("Abstract file path is :" + file.getPath());

System.out.println("Absolute file path is : " + file.getAbsolutePath());

   }

}

Get File size in bytes

import java.io.*;  

public class GetFileSizeInByetes

{

public static void main(String[] args)

{

File file = new File("C://FileIO/demo.txt");

long fileSize = file.length();

System.out.println("File size in bytes is: " + fileSize);

System.out.println("File size in KB is : " + (double)fileSize/1024);

System.out.println("File size in MB is :" + (double)fileSize/(1024*1024));

   }

}

Get Last modification time of a file or directory

import java.io.*;

import java.util.Date;

public class GetLastModificationTimeOfAFile

{

public static void main(String[] args)

{

File file = new File("C://FileIO//demo.txt");

long lastModified = file.lastModified();

System.out.println("File was last modifed at : " + new Date(lastModified));

   }

}

Get name of parent directory

import java.io.*;

public class GetParentDirectory

{

public static void main(String[] args)

{

File file = new File("C://FileIO/demo.txt");

String strParentDirectory = file.getParent();

System.out.println("Parent directory is : " + strParentDirectory);

   }

}

Get name of specified file or directory

import java.io.*;

public class GetNameOfFileOrDirectory

{

public static void main(String[] args)

{

File file = new File("C://FileIO//FileDemo.txt");

String strFileName = file.getName();

System.out.println("File name is : " + strFileName);

   }

}