Java获取当天的起始和结束时间_java 获取当天开始时间和结束时间-优快云博客

本文提供两种使用Java代码获取当前日期起始和结束时间的方法。通过Calendar类设置具体的时间元素来实现，适用于需要精确时间范围的场景。

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Java获取当天的起始和结束时间

import lombok.extern.slf4j.Slf4j;

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

@Slf4j
public class TestDemo {


        public static void main(String[] args) throws Exception {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            System.out.println(sdf.format(getStartTime()));
            System.out.println(sdf.format(getEndTime()));
        }

        private static Date getStartTime() {
            Calendar todayStart = Calendar.getInstance();
            todayStart.set(Calendar.HOUR, 0);
            todayStart.set(Calendar.MINUTE, 0);
            todayStart.set(Calendar.SECOND, 0);
            todayStart.set(Calendar.MILLISECOND, 0);
            return todayStart.getTime();
        }

        private static Date getEndTime() {
            Calendar todayEnd = Calendar.getInstance();
            todayEnd.set(Calendar.HOUR, 23);
            todayEnd.set(Calendar.MINUTE, 59);
            todayEnd.set(Calendar.SECOND, 59);
            todayEnd.set(Calendar.MILLISECOND, 999);
            return todayEnd.getTime();
        }


}

运行结果：
在这里插入图片描述
还有一种：

import lombok.extern.slf4j.Slf4j;

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

@Slf4j
public class TestDemo {


        public static void main(String[] args) throws Exception {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            System.out.println(sdf.format(getStartTime()));
            System.out.println(sdf.format(getEndTime()));
        }

        private static Date getStartTime() {
            Calendar todayStart = Calendar.getInstance();
            todayStart.set(Calendar.SECOND, 0);
            todayStart.set(Calendar.MINUTE, 0);
            todayStart.set(Calendar.HOUR_OF_DAY, 0);
            todayStart.set(Calendar.MILLISECOND, 0);
            return todayStart.getTime();
        }

        private static Date getEndTime() {
            Calendar todayEnd = Calendar.getInstance();
            todayEnd.set(Calendar.SECOND, 59);
            todayEnd.set(Calendar.MINUTE, 59);
            todayEnd.set(Calendar.HOUR_OF_DAY, 23);
            todayEnd.set(Calendar.MILLISECOND, 999);
            return todayEnd.getTime();
        }


}