How do I find out if first character of a string is a number?

Question

In Java is there a way to find out if first character of a string is a number?

One way is

string.startsWith(\"1\")

and do the abov

Answer 1

regular expression starts with number->'^[0-9]' 
Pattern pattern = Pattern.compile('^[0-9]');
 Matcher matcher = pattern.matcher(String);

if(matcher.find()){

System.out.println("true");
}