Using Wildcards and Quantifiers

The following example that uses the + quantifier to match any arbitrarily long sequence of Ws.


// Use a quantifier. 
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String args[]) {
    Pattern pat = Pattern.compile("A+");
    Matcher mat = pat.matcher("A AA AAA");
    while (mat.find()){
      System.out.println("Match: " + mat.group());
    }      
  }
}

The next program uses a wildcard to create a pattern that will match any sequence that begins with e and ends with d.


// Use wildcard and quantifier. 
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String args[]) {
    Pattern pat = Pattern.compile("e.+d");
    Matcher mat = pat.matcher("extend electronics ebook-iPad ");
    while (mat.find())
      System.out.println("Match: " + mat.group());
  }
}


//Match: extend electronics ebook-iPad