Here's what I've written (so far):

Baeldung on Java

  • All
  • Java String (1)

Check if the First Letter of a String Is a Number

This tutorial explains different ways to check if the first character of a string is a number in Java. It covers using charAt(), Character.isDigit(), Pattern class, and matches() method. It also demonstrates how to use Guava’s CharMatcher utility class to accomplish the same objective.

Read More →