Java Data Type - 如何格式化日期为"201506"

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class Main {

  public static void main(String[] args) {

    System.out.println(toUUUUMM(LocalDate.now()));
  }

  public static String toUUUUMM(LocalDate localDate) {
    return localDate.format(DateTimeFormatter.ofPattern("uuuuMM"));
  }
}