Re: How can I use Operand (+ , - ) with Time

From:

sahm <sahm007@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 15 Jan 2012 07:55:36 -0800 (PST)

Message-ID:

<4887cdd4-6a2e-49ac-9621-b594634fbf97@3g2000pbg.googlegroups.com>

On Jan 15, 6:19 pm, Jeff Higgins <j...@invalid.invalid> wrote:

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.

}

}

Thank you every one

I fix the problem with simple function

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
Time getTotalOverTime(Time StrtTime, Time EndTime)
    {
        Time TotalHours = null;
        String ST, ET, TH;
        int stH, stM, stS, etH, etM, etS, ttH, ttM, ttS;

        ST = String.valueOf(StrtTime);
        ET = String.valueOf(EndTime);

        stH = Integer.parseInt(ST.substring(0, 2));
        stM = Integer.parseInt(ST.substring(3, 5));
        stS = Integer.parseInt(ST.substring(6, 8));

        etH = Integer.parseInt(ET.substring(0, 2));
        etM = Integer.parseInt(ET.substring(3, 5));
        etS = Integer.parseInt(ET.substring(6, 8));

        ttS = etS - stS;
        if(ttS < 0)
        {
            ttS =+ 60;
            etM =- 1;
        }

        ttM = etM - stM;
        if(ttM < 0)
        {
            ttM =+ 60;
            etH =- 1;
        }

        ttH = etH - stH;

        TH = String.valueOf(ttH) +":"+ String.valueOf(ttM) +":"+
String.valueOf(ttS);

        TotalHours = Time.valueOf(TH);

        return TotalHours;
    }
////////////////////////////////////////

Best
Salim