package regexp; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MatchingModeLesson { public static void main(String[] args) { // Pattern p = Pattern.compile("a", Pattern.CASE_INSENSITIVE); Pattern p = Pattern.compile("A#this is commet", Pattern.COMMENTS); // Pattern p = Pattern.compile("a", Pattern.MULTILINE); Matcher m = p.matcher("A"); while(m.find()) { System.out.print(m.start() + " " + m.group() + " "); } System.out.println(""); System.out.println("A".matches("(?i)a")); "A".matches("(?s)a");//single line "A".matches("(?m)a");//multiline System.out.println("A".matches("(?x)A#this is comment"));//commetnts System.out.println("A".matches("(?ix)a#this is comment")); System.out.println("AA".matches("(?i)a(?-i)a")); System.out.println("AAA".matches("(?i)a(?-i:A)a")); } }