فئة التاريخ في Java (مع أمثلة)
يمثل تاريخ الفصل لحظة زمنية محددة بدقة بالمللي ثانية. تطبق فئة التاريخ لحزمة java.util واجهة قابلة للاستنساخ وقابلة للمقارنة. يوفر مُنشئات وأساليب للتعامل مع التاريخ والوقت باستخدام Java. البنائين
// Java program to demonstrate constuctors of Date import java.util.* ; public class Main { public static void main ( String [] args ) { Date d1 = new Date (); System . out . println ( 'Current date is ' + d1 ); Date d2 = new Date ( 2323223232L ); System . out . println ( 'Date represented is ' + d2 ); } }
Output: Current date is Tue Jul 12 18:35:37 IST 2016 Date represented is Wed Jan 28 02:50:23 IST 1970طرق مهمة
// Program to demonstrate methods of Date class import java.util.* ; public class Main { public static void main ( String [] args ) { // Creating date Date d1 = new Date ( 2000 11 21 ); Date d2 = new Date (); // Current date Date d3 = new Date ( 2010 1 3 ); boolean a = d3 . after ( d1 ); System . out . println ( 'Date d3 comes after ' + 'date d2: ' + a ); boolean b = d3 . before ( d2 ); System . out . println ( 'Date d3 comes before ' + 'date d2: ' + b ); int c = d1 . compareTo ( d2 ); System . out . println ( c ); System . out . println ( 'Miliseconds from Jan 1 ' + '1970 to date d1 is ' + d1 . getTime ()); System . out . println ( 'Before setting ' + d2 ); d2 . setTime ( 204587433443L ); System . out . println ( 'After setting ' + d2 ); } }
Output: Date d3 comes after date d2: true Date d3 comes before date d2: false 1 Miliseconds from Jan 1 1970 to date d1 is 60935500800000 Before setting Tue Jul 12 13:13:16 UTC 2016 After setting Fri Jun 25 21:50:33 UTC 1976