如何让Java显示从日期开始的日期？ [英] How to get Java to show the day of month from a date?

问题描述

我正在尝试提取今天的日期。我有这个

I am trying to extract the day of month of today's date. I have this

DateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy");
Date date = new Date();
JOptionPane.showMessageDialog(null, date.getDay());

但是当出现消息对话框时，它会显示数字 5
，今天是 8 。如何设置它以显示该月的哪一天？

but when the message dialog appears it show the number 5 and today it's the 8th. How can I set it to show what day of the month it is?

推荐答案

date.getDay（ ）返回星期几。星期日是0，同样星期六是6。

date.getDay() returns the day of the week. sunday is 0 and similarly saturday is 6.

请参阅 java docs

根据下面给出的评论

Calendar cal = Calendar.getInstance();
    int dayOfMonth = cal.get(Calendar.DAY_OF_MONTH);

    String dayOfMonthStr = String.valueOf(dayOfMonth);
    System.out.println(dayOfMonthStr);

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