Java日期——获取24小时制格式的小时数值

package com.example.demo.controller;

import java.util.Calendar;
import java.util.Date;

public class Demo {

    public static int getHour(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.HOUR_OF_DAY);
    }

    public static void main(String[] args) {
        int i = getHour(new Date());
        System.out.println("i = " + i);

    }

}