小编Gau*_*war的帖子

我是JavaScript的新手,我正在尝试编写一个代码,用于计算从用户登录到当前时间所经过的时间.

这是我的代码: -

function markPresent() {
    window.markDate = new Date();
    $(document).ready(function() {
        $("div.absent").toggleClass("present");
    });
    updateClock();
}

function updateClock() {    
    var markMinutes = markDate.getMinutes();
    var markSeconds = markDate.getSeconds();

    var currDate = new Date();
    var currMinutes = currDate.getMinutes();
    var currSeconds = currDate.getSeconds();
    var minutes = currMinutes - markMinutes;
    if(minutes < 0) { minutes += 60; }
    var seconds = currSeconds - markSeconds;
    if(seconds < 0) { seconds += 60; }

    if(minutes < 10) { minutes = "0" + minutes; }
    if(seconds < …

我正在编写一个Java程序,它从.xlsx文件中读取并以.csv格式提供输出.这是我的代码:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.text.SimpleDateFormat; 
import java.util.Date;
import java.util.Iterator;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;   
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Row;

public class xlsxToCsv {

    public static void main(String[] args) {

        long startTime = System.currentTimeMillis();

        File inputFile = new File("C:\\inputFile.xlsx");
        File outputFile = new File("C:\\outputFile.csv");

        xlsx(inputFile, outputFile);

        long stopTime = System.currentTimeMillis();
        long elapsedTime = stopTime - startTime;

        System.out.println(elapsedTime);

   }

   private static void xlsx(File inputFile, File outputFile) {

        //for storing data …