Multiple flags must be combined using the or operator (|).
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
public static void main(String[] argv) throws Exception {
CharSequence inputStr = "Abc\ndef";
String patternStr = "abc$";
// Compile with multiline and case-insensitive enabled
Pattern pattern = Pattern.compile(patternStr, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(inputStr);
boolean matchFound = matcher.find();
}
}