Java Data Type - 如何将日期从“02/06/2015”转换为“2015-02-06”

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

public class Main {

  public static void main(String[] args) {
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("M/d/y");
    LocalDate maxCloseDate = LocalDate.parse("02/06/2015", formatter);
    System.out.println(maxCloseDate);
  }
}