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POJava: Getting time interval
 

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    <p>I am on a project to capture the interval time in hh:mm. I have 2 buttons named btnTimeOut &amp; btnTimeIn both capturing the system time when clicked. The requirement is to get the interval between the btnTimeOut &amp; btnTime in hh:mm, etc. 12:30 - 10:00 = 02:30 (hh:mm).</p> <p>Currently I used the following codes for the interval but it returns as minutes, etc. 12:30 - 10:00 = 150 minutes.</p> <pre><code> String timeOut = lblTimeOut.getText(); String timeIn = lblTimeIn2.getText(); SimpleDateFormat format = new SimpleDateFormat("hh:mm"); Date d1 = null; Date d2 = null; try { d1 = format.parse(timeOut); d2 = format.parse(timeIn); } catch (Exception e){ e.printStackTrace(); } long diff = d2.getTime() - d1.getTime(); long diffMinutes = diff / (60 * 1000); long diffHours = diff / (60 * 60 * 1000); lblSurface.setText(String.valueOf(diffMinutes)); </code></pre> <p>How to get the duration in the form <code>hh:mm</code>?</p> <p>I used Joda time and return with Invalid format: "12:19" is malformed at ":19". As for my other buttons which trigger the display time.</p> <pre><code>DateFormat timeFormat = new SimpleDateFormat("hh:mm"); Date date = new Date(); String time = timeFormat.format(date); lblTimeIn2.setText(time); Timer timer = new Timer(1000, timerListener); // to make sure it doesn't wait one second at the start timer.setInitialDelay(0); timer.start(); } </code></pre> <p>I've no idea what is wrong, do I need to use joda time for displaying time for my other label too?</p>
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