Help me!

I need to compare two values: finish time and start time which gotten from text fields in my program.  I tried to use codes:
1).  if (txtfinishTime.getText() <= txtstartTime.getText())
            return true
      elase
           return false;

 
2).  SimpleDateFormat formatter = new SimpleDateFormat("hh:mm:ss");
  long ET = formatter.parse(txtfinishTime.getText()).getTime();
  long ST = formatter.parse(txtstartTime.getText()).getTime();
 if(ET <= ST)
     return true;
 else
   return false;

Both 1) and 2) are wrong. For 2). If I enter any time from 12:00:00 to 12:59:59 in the text field txtfinishTime, 9:00:00 in the text field txtstartTime, it returns true. But if I enter any time not from 12:00:00 to 12:59:59 and later than the txtstartTime 9:00:00, such as 9:30:00, it returns false.
Can anybody help me solve this problem? Thanks!!!!
leeannAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Christoffer SwanströmPartnerCommented:
Your second approach should work with the following modification. Change the line:

SimpleDateFormat formatter = new SimpleDateFormat("hh:mm:ss");

to:

SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");

The difference is that hh uses am/pm notation (hours from 1 to 12) and HH uses 24-hour notation (0 to 23). hh should also work, but for some reason it does not. You can verify this by printing out the values assigned to ET and ST: when the finish time is between 12:00:00 and 12:59:59 ET is negative, which just doesn't make sense (Date.getTime() returns the number of milliseconds elapsed since January 1st, 1970)

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Java

From novice to tech pro — start learning today.