本文介绍了根据Java中的天数获取日期的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着跟版网的小编来一起学习吧！
问题描述
Simple Question, but Google surprisingly had little on this. I have the number of days from Jan 1st of the year. How can I convert that to a date in Java?
解决方案
Use Calendar for date arithmetic
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, 2013);
c.set(Calendar.MONTH, Calendar.JANUARY);
c.set(Calendar.DATE, 1);
c.set(Calendar.HOUR, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);
c.add(Calendar.DATE, numberOfDays);
Date date = c.getTime();
Note that the result may be different for different locales because of DST (summer time). The above example uses default locale.
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