Most commonly used Utility Methods in Java

How to truncate decimal value to two digits

     double d = 3.34568;
     DecimalFormat f = new DecimalFormat("##.00");
    Output is : 3.34


    public static void main(String args[]){
        // Initialize and assign String[] array
        String[] arr = new String[]{"A","B"};
        // Convert String[] array to List<String>
        List<String> arrList = new ArrayList<String>(Arrays.asList(arr));
        System.out.println(arrList);
        // Convert List<String> to String[] array
        arr = arrList.toArray(new String[arrList.size()]);
        System.out.println(arr);
    }