Representing time field in java class

Hi All,

how do i represent this time field in my java class

I would like the format when outputted to be
recording time 4:38.284
completed time 2:27:39.484
rosy2015Asked:
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Jeffrey Dake Senior Director of TechnologyCommented:
when outputting your date object you can use a date formater to output that time in whatever format you want.

For the output you want you can use a http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html

Hope this is what you are looking for
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rosy2015Author Commented:
further help needed, here's my class and my main class, i would like to format both fields before outputting, new to java, how do i do this?


import java.util.Calendar;

public class Recording {
   private long  recordingTime = Calendar.getInstance().getTimeInMillis();
   private long  completedTime = Calendar.getInstance().getTimeInMillis();
         
    public Recording( long tRecordingTime, long tCompletedTime)
    {
        this.recordingTime =tRecordingTime;
        this.completedTime = tCompletedTime;
    }

    public long getRecordingTime()
   {
        return recordingTime;
       
   }
 
   public void setRecordingTime(long value)
   {
       recordingTime = value;
       
   }
   
    public long getCompletedTime()
   {
        return completedTime;    
   }
 
   public void setCompletedTime(long value)
   {
       completedTime = value;
       
   }
   
    @Override
     public String toString()
            //print information
    {
        return "("+ "\t" + recordingTime +  "\t" + completedTime +  "\t " 
                +"\n";
    }
}


//main class


import java.util.ArrayList;
import java.util.List;

public class Album {
    public static void main(String[] args) {
        // TODO code application logic here
        // TODO code application logic here
      List<Recording> record = new ArrayList<>();
       Recording record1 = new Recording(137481,672745103);
       record.add(record1);
       Recording record2 = new Recording(937176,68652108);
       record.add(record2);
       Recording record3 = new Recording(198459,69738107);
       record.add(record3);
       Recording record4 = new Recording(238264,69722104);
       record.add(record4);
     
       System.out.println(record.toString());
       
    }
   
}
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Jeffrey Dake Senior Director of TechnologyCommented:
So since you are using milliseconds to keep track of the time, you can convert that back to a date object.  You can then format that date object.

Date recordingDate = new Date(recordingTime);
Date completedTimeDate = new Date(completedTime);
DateFormat formatter = new SimpleDateFormat("HH:mm:ss:SSS");
String dateFormatted = formatter.format(recordingDate);
String completedFormatDate = formater.format(completedTimeDate);

You can then use those Strings to print out the results in you toString() method.
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rosy2015Author Commented:
Hi tried this in the class and it did not work

public void setRecordingTime(long value)
   {
       Date recordingDate = new Date(recordingTime);
        Date completedTimeDate = new Date(completedTime);
        DateFormat formatter = new SimpleDateFormat("HH:mm:ss:SSS");
        String dateFormatted = formatter.format(recordingDate);
        String completedFormatDate = formatter.format(completedTimeDate);

       recordingTime = value;
       
   }
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Jeffrey Dake Senior Director of TechnologyCommented:
Sorry, I meant that you could change your toString method to the following:

   @Override
   public String toString()
          //print information
  {
      Date recordingDate = new Date(recordingTime);
      Date completedTimeDate = new Date(completedTime);
      DateFormat formatter = new SimpleDateFormat("HH:mm:ss:SSS");
      String dateFormatted = formatter.format(recordingDate);
      String completedFormatDate = formatter.format(completedTimeDate);
     
      return "("+ "\t" + dateFormatted +  "\t" + completedFormatDate +  "\t "
              +"\n";
  }

Now the dates will be formatted in your toString() method, which is what is being called when you call.
System.out.println(record.toString()); on each on of your Recording  objects.
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rosy2015Author Commented:
Thanks Jeffery! Please look out for my other questions, i'm self teaching myself Java :-)
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rosy2015Author Commented:
Ace answer and quick feedback, you rock!!
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