Java Date日期和String字符串互转

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

public class Main {
    public static void main(String[] args) throws ParseException {
        // 日期转字符串
        Date date = new Date();
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        String dateStr = simpleDateFormat.format(date);
        System.out.println(dateStr);

        // 字符串转日期
        String dateStr1 = "2021/10/11 10:00:00";
        SimpleDateFormat simpleDateFormat1 = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        Date date1 = simpleDateFormat1.parse(dateStr1);
        System.out.println(date1);
    }

}