Displays all directories and file names in the specified path

//Usage of File class and isDirectory and list method

import java.io.*;
class DirList
{
public static void main(String args[])
{
String dirname="F:/DO IT/Home Practice";
File f1=new File(dirname);
if(f1.isDirectory())
{
System.out.println("Directory of" + dirname);
String s[]=f1.list();
for(int i=0;i<s.length;i++)
{
File f=new File(dirname + "/" + s[i]);
if(f.isDirectory())
{
System.out.println(s[i]  + "is a directory");
}
else
{
System.out.println(s[i] + "is a file");
}
}
}
else
{
System.out.println(dirname + "is not a directory");
}
}
}

output:
Directory ofF:/DO IT/Home Practice
Collectionsis a directory
Dateis a directory
FileIOis a directory
Filesis a directory
Packageis a directory
String Handlingis a directory
StringRev.classis a file
StringRev.javais a file