Remove leading zeros from a string

Question

Hi,
I have a string with some numeric value.
e.g.
String a = 54890001
I want to make it 10 digits long by padding zeros at the begining
Now a = 0054890001 ( this is for display purpose ) I know how to do it.
Now How can strip these leading zeros from this number to get back the actual number. The user sees this 10 digit number and he can change it to something like 0067490001. Now I want to strip these leading zeros.
and i shd get 67490001.
In other words, how to strip leading zeros from a string ?
Thanks for help
Vinod

Answer 1

I would try two things: First, just try a straightforward parsing of your String using the Integer.parseInt() method. This is only my first suggestion because the number could be interpreted as octals; only testing will really tell. Second, try a method like this:
public static String removeLeadingZeros(String str) {
    if (str == null) {
        return null;
    char[] chars = str.toCharArray();
    int index = 0;
    for (; index < str.length; index++) {
        if (chars[index] != '0') {
            break;
    return (index == 0) ? str : str.substring(index);
}Shaun