Match a digit : Validation « Regular Expressions « Java Tutorial

public class MainClass {
  public static void main(String args[]) {
    String candidate = "Java 6";
    String pattern = "Java \\d";

8.10.1.Primitive address validation
8.10.2.Date format consists of one or two digits followed by a hyphen, followed by one or two digits, followed by a hypen, followed by four digits
8.10.3.Finding duplication of words
8.10.4.Name validation
8.10.5.Phone number validation
8.10.6.Zip code validation
8.10.7.String manipulation using English synonyms
8.10.8.Match a digit