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POCalculating days between two dates with Java
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copied!<p>I want a Java program that calculates days between two dates.</p> <ol> <li>Type the first date (German notation; with whitespaces: "dd mm yyyy")</li> <li>Type the second date.</li> <li>The program should calculates the number of days between the two dates.</li> </ol> <p>How can I include leap years and summertime?</p> <p>My code:</p> <pre><code>import java.util.Calendar; import java.util.Date; import java.util.Scanner; public class NewDateDifference { public static void main(String[] args) { System.out.print("Insert first date: "); Scanner s = new Scanner(System.in); String[] eingabe1 = new String[3]; while (s.hasNext()) { int i = 0; insert1[i] = s.next(); if (!s.hasNext()) { s.close(); break; } i++; } System.out.print("Insert second date: "); Scanner t = new Scanner(System.in); String[] insert2 = new String[3]; while (t.hasNext()) { int i = 0; insert2[i] = t.next(); if (!t.hasNext()) { t.close(); break; } i++; } Calendar cal = Calendar.getInstance(); cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(insert1[0])); cal.set(Calendar.MONTH, Integer.parseInt(insert1[1])); cal.set(Calendar.YEAR, Integer.parseInt(insert1[2])); Date firstDate = cal.getTime(); cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(insert2[0])); cal.set(Calendar.MONTH, Integer.parseInt(insert2[1])); cal.set(Calendar.YEAR, Integer.parseInt(insert2[2])); Date secondDate = cal.getTime(); long diff = secondDate.getTime() - firstDate.getTime(); System.out.println ("Days: " + diff / 1000 / 60 / 60 / 24); } } </code></pre>

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