public static String encrypt(String filename)
	{
		String superString="";
		Scanner fin=new Scanner(System.in);

		try
    	{
    		fin=new Scanner(new FileReader(filename));
    	}
    	catch(Exception e){e.printStackTrace();}

    	while(fin.hasNextLine())
    	{
    		String line=fin.nextLine();

    		for(int i=0; i<line.length(); i++)
    		{
    			superString+=""+Integer.toHexString((int) line.charAt(i));
    		}
    	}

		return superString;
	}