{}
// Online Java Compiler
// Use this editor to write, compile and run your Java code online
class Main {
public static void main(String[] args) {
String text = "aß ۱۲۳۴۵۶۷۸۹";
System.out.println(text.matches("a\\b.*"));
System.out.println(text.matches("a\\b.*\\d"));
System.out.println(text.matches("a(?-U)\\b(?U).*\\d"));
System.out.println(System.getProperty("java.version"));
}
}