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Long story short (in Java):
String input= "0888880747;
long convert = Long.parseLong(input);
The value of convert is now: 888880747
How can I parse the String to a long but retain the leading zero?
You cannot because a long does not have a leading zero. A long is supposed to store integers (the mathematical concept, not
int), i.e.A string of characters like
05is not an integer,5is. What you can do is format a long that holds5with a leading zero when you print it, see e.g. java.util.Formatter.Are you sure you even want to have a long/an integer? What do you want to do with it?