【java程序员必备上班时长计算器】

java代码，根据程序员每天打卡时间，获取上班总时长，上班天数，平均上班时长，超出要求时间，为了方便大家把握时间节奏，合理规划下班时间；

package com.company.src.main.time;

import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;


public class OfficeTime {
    public static void main(String[] args) {
        //要求上班时长（两次打卡时间间隔）
        int requireNum=11;
        List list= new ArrayList<>();
        //第一周
        list.add(getHours(new Time("09:45","20:45")));
        list.add(getHours(new Time("09:44","20:34")));
        list.add(getHours(new Time("09:48","22:34")));
        list.add(getHours(new Time("09:46","20:03")));
        //第二周
        list.add(getHours(new Time("09:46","20:17")));
        list.add(getHours(new Time("09:43","23:59")));
        list.add(getHours(new Time("09:46","20:38")));
        list.add(getHours(new Time("09:43","20:00")));
        list.add(getHours(new Time("09:49","19:13")));

        BigDecimal sum=BigDecimal.ZERO;
        for (BigDecimal bigDecimal : list) {
            sum=sum.add(bigDecimal);
        }
        System.out.println("----------------------汇总数据----------------------");
        System.out.println("上班时长最大值："+Collections.max(list));
        System.out.println("上班时长最小值："+Collections.min(list));
        System.out.println("总上班时长:"+sum);
        System.out.println("上班天数:"+list.size());
        System.out.println("平均每日上班时长:"+sum.divide(new BigDecimal(list.size()),2, BigDecimal.ROUND_HALF_UP));
        System.out.println("超过界限小时数:"+sum.subtract(new BigDecimal(list.size()).multiply(new BigDecimal(requireNum))));
    }

    
    public static BigDecimal getHours(Time time){
        String beginTime=time.getBeginTime();
        Date beginDate = getDate(beginTime);
        String endTime=time.getEndTime();
        Date endDate = getDate(endTime);
        long difference = endDate.getTime() - beginDate.getTime();
        long diffHours = difference / (60 * 60 * 1000) % 24;
        long diffMinutes = (difference-diffHours*(60 * 60 * 1000)) / (60 * 1000) % 60;
        BigDecimal hours= new BigDecimal(diffHours);
        BigDecimal minutes= new BigDecimal(diffMinutes);
        BigDecimal divide = minutes.divide(BigDecimal.valueOf(60), 2, BigDecimal.ROUND_HALF_UP);
        BigDecimal result=hours.add(divide);
        System.out.println("上班小时数为："+diffHours+"；上班时间分钟数是"+diffMinutes+"；当天的上班时长为："+result);
        return result;
    }

    
    public static Date getDate(String beginTime){
        String startTime=beginTime+":00";
        SimpleDateFormat dateFormat =new SimpleDateFormat("HH:mm:ss");
        Date parse = null;
        try {
            parse = dateFormat.parse(startTime);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return parse;
    }
}

package com.company.src.main.time;


public class Time {
    
    private String beginTime;
    
    private String endTime;

    public String getBeginTime() {
        return beginTime;
    }

    public void setBeginTime(String beginTime) {
        this.beginTime = beginTime;
    }

    public String getEndTime() {
        return endTime;
    }

    public void setEndTime(String endTime) {
        this.endTime = endTime;
    }

    public Time(String beginTime, String endTime) {
        this.beginTime = beginTime;
        this.endTime = endTime;
    }
}