java java将小时添加到系统日期和yyyyMMddHHmmss格式

java add hours to system date and in yyyyMMddHHmmss format

提问by TechFind

I am getting input as some date/time in hours(integer) eg: 2 hrs I want to add this input hours to system date in yyyyMMddHHmmss format. How can i do this?

我正在输入以小时为单位的某个日期/时间（整数），例如：2 小时我想将此输入小时添加到 yyyyMMddHHmmss 格式的系统日期中。我怎样才能做到这一点？

回答by Mark Peters

You could do something like this (assuming you meant formatinstead of parse):

你可以做这样的事情（假设你的意思是format而不是parse）：

int hoursToAdd = 2; //or from input
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.HOUR, hoursToAdd);
System.out.println(new SimpleDateFormat("yyyyMMddHHmmss").format(calendar.getTime()));

回答by dogbane

Using the joda-timelibrary:

使用joda-time库：

System.out.println(DateTimeFormat.forPattern("yyyyMMddHHmmss")
                                 .print(new DateTime().plusHours(2)));