60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
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package com.mesasoft.cn.sketch.util;
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import java.util.Calendar;
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import java.util.Date;
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/**
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* @author yjy
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* @version 1.0
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* @date 2021/2/25 11:26 上午
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*/
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public class TimeUtils {
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public static final Long HOUR_TO_MILLISECONDS = 3600000L;
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public static final Long DAY_TO_MILLSEDONDS = 86400000L;
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public static final Integer SECOND_TO_MILLSEDONDS = 1000;
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/**
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* 获得当前时间小时的起始（0分钟）时间
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*/
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public static Date getStartOfHour() {
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return getStartOfHour(0);
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}
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public static Date getStartOfHour(Integer offset) {
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Calendar ca = Calendar.getInstance();
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ca.add(Calendar.HOUR, offset);
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ca.set(Calendar.MINUTE, 0);
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ca.set(Calendar.SECOND, 0);
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ca.set(Calendar.MILLISECOND, 0);
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return ca.getTime();
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}
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/**
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* 获得当前日期的起始（0时）时间
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*/
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public static Date getStartOfDay() {
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return getStartOfDay(0);
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}
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public static Date getStartOfDay(Integer bias) {
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Calendar ca = Calendar.getInstance();
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ca.add(Calendar.DATE, bias);
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ca.set(Calendar.HOUR, -12);
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ca.set(Calendar.MINUTE, 0);
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ca.set(Calendar.SECOND, 0);
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ca.set(Calendar.MILLISECOND, 0);
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return ca.getTime();
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}
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public static Date getStartOfMonth() {
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Calendar ca = Calendar.getInstance();
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ca.set(Calendar.DATE, 1);
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ca.set(Calendar.HOUR, -12);
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ca.set(Calendar.MINUTE, 0);
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ca.set(Calendar.SECOND, 0);
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ca.set(Calendar.MILLISECOND, 0);
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return ca.getTime();
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}
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}
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