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Java Application Parking Simulator Interface Term Paper

They refer to different aspects of program development: 1) While working with real variables (float type), after calculations unwanted errors appeared, which caused incorrect work of the application:

for example: Amount=Amount+ (float)0.5 caused incorrect result of the following time:

amount=4.

This mistake was corrected in the following way:

Amount=(float)((Math.rint ((double)Amount*100+(double)0,5*100))/100);

So the numbers were transformed to integers and they were used in math operations like integers, then they were transformed back to real. This was one of the most widely spread errors in the program which was corrected successfully.

2) for date defining data was taken from computer's current profile, but current profile could be set incorrectly. That's why the profile was changed on the profile of UK:

formatter = new SimpleDateFormat ("hh:mm," Locale.Default);

formatter = new SimpleDateFormat ("hh:mm," Locale.UK);

3) When data was recorded into text file, it was recorded as one line whch was very inappropriate for analysis and for viewing

This error was fixed by.newLine () method;

4) During file recording in "OK" button code on form of parking payments the file was rerecorded without saving previous operations (every operation...

1998

Sources used in this document:
Calvert, Charlie Calvert's Learn JBuilder Wordware Publishing 2002

Landy, Michael and others Borland JBuilder Developer's Guide Sams 2002

Zukowski, John Borland's Jbuilder: No Experience Required (No Experience Required Series) Symbex Inc. 1998
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