ShortName

    public static void main(String[] args) {

        String name = "Avul Pakir Jainulabdeen Abdul kalam";
        String[] splitedName = name.split("\\s");
        String shortName = "";

        int len = (splitedName.length - 1);

        for (int i = 0; i < len; i++)
            shortName = shortName.concat(splitedName[i].charAt(0) + ". ");

        shortName = shortName.concat(splitedName[len]);
        System.out.println(shortName.toUpperCase());
    }