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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: How can I use Operand (+ , - )  with Time
Date: Sun, 15 Jan 2012 10:19:59 -0500
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On 01/15/2012 08:32 AM, Jeff Higgins wrote:
> On 01/15/2012 02:44 AM, sahm wrote:
>> Hi every One
>>
>> I'm Try to do program to calculate the Over Time, I'm working with 24
>> hour not A.M.& P.M. and this is my Time format (HH:MM:SS) (00:00:00).
>> But how can I use operand (+, -) with Time
>
> See Stefan for the answer.
> An alternative follows.
>
>> This is my Code
>>
>> /////////////////////////////////////////////////////////////////////
>> import java.sql.Time;
>> import java.util.Date;
>>
>>
>> public class OverTimeDetailsDataClass {
>>
>> String Emp_ID;
>> String OverTime_Doc_NO;
>> String OverTime_Date;
>> Time OverTime_Start_Time;
>> Time OverTime_End_Time;
>> Time OverTimeTotalHours;
>>
>> OverTime_Start_Time =
>> Time.valueOf(OverTimeFromjTextField.getText());
>> OverTime_End_Time = Time.valueOf(OverTimeTOjTextField.getText());
>> OverTimeTotalHours = OverTime_End_Time - OverTime_Start_Time;
>> }
>
> import java.sql.Time;
> import java.util.Calendar;
> import java.util.Locale;
> import java.util.TimeZone;
>
> import javax.swing.JTextField;
>
>
> public class OT {
>
> public static void main(String[] args) {
>
> JTextField OverTimeFromjTextField = null;
> JTextField OverTimeTOjTextField = null;

   // The abstract class java.text.DateFormat
   // and it's concrete java.text.SimpleDateFormat
   // are good for getting/setting formatted input/output

>
> Time OverTime_Start_Time;
> Time OverTime_End_Time;

   // Unless you are using the JDBC API
   // you should avoid using the java.sql classes:
   // java.sql.Date, java.sql.Time, java.sql.Timestamp

   // in favor of java.util.Date, java.util.Calendar,
   // java.util.GregorianCalendar, java.util.Locale,
   // java.util.TimeZone, java.util.SimpleTimeZone

>
> // Be aware: read the documentation for java.util.Calendar
> TimeZone timeZone = TimeZone.getDefault();
> Locale locale = Locale.getDefault();
>
> Calendar startTime = Calendar.getInstance(timeZone,locale);
> Calendar endTime = Calendar.getInstance(timeZone,locale);
>
> OverTime_Start_Time =
> Time.valueOf(OverTimeFromjTextField.getText());
> OverTime_End_Time = Time.valueOf(OverTimeTOjTextField.getText());
>
> startTime.setTime(OverTime_Start_Time);
> endTime.setTime(OverTime_End_Time);
>
> // use the java.util.Calendar.add(int field, int amount) method
> // as described in the documentation.
>
> }
>
> }
>
>