// strings/ReFlags.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
import java.util.regex.*;

public class ReFlags {
  public static void main(String[] args) {
    Pattern p =  Pattern.compile("^java",
      Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
    Matcher m = p.matcher(
      "java has regex\nJava has regex\n" +
      "JAVA has pretty good regular expressions\n" +
      "Regular expressions are in Java");
    while(m.find())
      System.out.println(m.group());
  }
}
/* Output:
java
Java
JAVA
*/