Java字符串到日期转换

import java.text.SimpleDateFormat;
import java.util.Date;

public class DateFormatDemo {
    public static void main(String[] args) {
        String dateStr = "2022-01-01";
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date date = sdf.parse(dateStr);
            System.out.println(date);
            String newDateStr = sdf.format(date);
            System.out.println(newDateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
    }
}