Java㧠日付ã®å·®ã€€å·®åˆ†æ—¥æ•°ã‚’å–å¾—ã™ã‚‹éš›ã«é–“é•ãˆãŸã“㨠- ã²ã‚ˆã£ã“PGã®ãƒ–ãƒã‚°æ—¥ä»˜é–¢é€£ã®ãƒ¦ãƒ¼ãƒ†ã‚£ãƒªãƒ†ã‚£ã‚¯ãƒ©ã‚¹ã¨ã—㦠DateUtilsクラスを作ã£ã¦ã„る時ã«æ›¸ã„ãŸãƒ¡ãƒ¢ã§ã™ã€‚ ã¾ãšåˆã‚ã«ã‚½ãƒ¼ã‚¹ã‚’貼りã¾ã™ã€‚ import java.util.Calendar; import java.util.Date; public class Test { public static void main(String args[]){ Calendar cal1 = Calendar.getInstance(); cal1.set(2014, 0, 1); Date dateFrom = cal1.getTime(); Calendar cal2 = Calendar.getInstance(); cal2.set(2014, 0, 2); Date dateTo = cal2.getTime(); int result = diffDays(dateFrom, dateTo);
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