Matcher.matches method : Matcher « Regular Expressions « Java Tutorial

1. Java Tutorial
2. Regular Expressions
3. Matcher

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MainClass {
  public static void main(String args[]) {
    Pattern p = Pattern.compile("J2SE");

    String candidateString_1 = "j2se";
    String candidateString_2 = "J2SE ";
    String candidateString_3 = "J2SE";

    Matcher matcher_1 = p.matcher(candidateString_1);
    Matcher matcher_2 = p.matcher(candidateString_2);
    Matcher matcher_3 = p.matcher(candidateString_3);

    String msg = ":" + candidateString_1 + ": matches?: ";
    System.out.println(msg + matcher_1.matches());

    msg = ":" + candidateString_2 + ": matches?: ";
    System.out.println(msg + matcher_2.matches());

    msg = ":" + candidateString_3 + ": matches?: ";
    System.out.println(msg + matcher_3.matches());
  }
}
/*

*/

:j2se: matches?: false
:J2SE : matches?: false
:J2SE: matches?: true