Java tutorial
import java.util.Scanner; import java.util.regex.Pattern; public class Main { public static void main(String[] args) { String s = "java2s.com 1 + 1 = 2.0"; Scanner scanner = new Scanner(s); // find a pattern of 2 letters before com, with horizon of 5 System.out.println(scanner.findWithinHorizon(Pattern.compile("..com"), 5)); // find a pattern of 2 letters before com, with horizon of 10 System.out.println(scanner.findWithinHorizon(Pattern.compile("..com"), 10)); // print the rest of the string System.out.println(scanner.nextLine()); scanner.close(); } }