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