如何获取当前日期并在Java中添加五个工作日[复制]

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这个问题在这里已有答案：

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I want two dates. 1) Current date in MM/dd/yy format 2) Modified date which will be the adition of five business days(Mon-Fri) to current date and it should be in MMM dd, yyyy format.

我想要两个约会。 1）MM / dd / yy格式的当前日期2）修改日期，即五个工作日（周一至周五）至当前日期的加法，应为MMM dd，yyyy格式。

So if my current is 9th june than currentDate should be 06/09/14 and modifiedDate should be Jun 13, 2014.

因此，如果我的当前时间是6月9日，那么currentDate应该是06/09/14，并且modifiedDate应该是2014年6月13日。

How to do this?

这个怎么做？

3 个解决方案

#1

This will add working days (Mon-Fri) and will present dates in the required format.

这将增加工作日（周一至周五），并以所需格式显示日期。

    Date date=new Date();
    Calendar calendar = Calendar.getInstance();
    date=calendar.getTime(); 
    SimpleDateFormat s;
    s=new SimpleDateFormat("MM/dd/yy");

    System.out.println(s.format(date));

    int days = 5;
    for(int i=0;i<days;)
    {
        calendar.add(Calendar.DAY_OF_MONTH, 1);
        //here even sat and sun are added
        //but at the end it goes to the correct week day.
        //because i is only increased if it is week day
        if(calendar.get(Calendar.DAY_OF_WEEK)<=5)
        {
            i++;
        }

    }
    date=calendar.getTime(); 
    s=new SimpleDateFormat("MMM dd, yyyy");
    System.out.println(s.format(date));

Ref : https://*.com/a/15339851/3603806 and https://*.com/a/11356123/3603806

参考：https：//*.com/a/15339851/3603806和https://*.com/a/11356123/3603806

#2

The notion of working days is not implemented in Java, it's too subject to interpretation (for example, many international companies have their own holidays). Code below uses isWorkingDay(), which only returns false for weekends - add your holidays there.

工作日的概念不是用Java实现的，它太容易解释（例如，许多国际公司都有自己的假期）。下面的代码使用isWorkingDay（），它只在周末返回false - 在那里添加你的假期。

public class Test {

    public static void main(String[] args) {
        Calendar cal = new GregorianCalendar();
        // cal now contains current date
        System.out.println(cal.getTime());

        // add the working days
        int workingDaysToAdd = 5;
        for (int i=0; i<workingDaysToAdd; i++)
            do {
                cal.add(Calendar.DAY_OF_MONTH, 1);
            } while ( ! isWorkingDay(cal));
        System.out.println(cal.getTime());
    }

    private static boolean isWorkingDay(Calendar cal) {
        int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayOfWeek == Calendar.SUNDAY || dayOfWeek == Calendar.SATURDAY)
            return false;
        // tests for other holidays here
        // ...
        return true;
    }

}

#3

Here is the code sample to add dates. You may modify in order to you can only add business days.

这是添加日期的代码示例。您可以修改，以便您只能添加工作日。

    SimpleDateFormat sdf1 = new SimpleDateFormat("MM/dd/yy");
    SimpleDateFormat sdf2 = new SimpleDateFormat("MMM dd, yyyy");
    Calendar calendar = Calendar.getInstance();
    calendar.setTime(new Date());

    System.out.println(sdf1.format(calendar.getTime()));
    calendar.add(Calendar.DATE,6);
    System.out.println(sdf2.format(calendar.getTime()));

#1