import java.io.*;

public class DirList
{
	public static void main(String[] args)
	{	File f = new File(args[0]);
		if(f.isDirectory())
		{	String[] files = f.list();
			for(String each: files)
				System.out.println(each);
		}
		File f1 = new File(f,"/sub");
		f1.mkdir();
	}
}

import java.io.*;

public class ConsoleDemo
{
	public static void main(String[] args)
	{   		 
		Console c = System.console();
		if(c == null)
			return;
		String s = c.readLine("Enter a String: ");
		char[] p = c.readPassword("Enter a Password: ");
		String pw = String.valueOf(p);
		System.out.println("Entered Details: "+s+", "+pw);
	}
}