This week's book giveaway is in the Design forum.
We're giving away four copies of Mastering Non-Functional Requirements and have Sameer Paradkar on-line!
See this thread for details.
Win a copy of Mastering Non-Functional Requirements this week in the Design forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

reusing classes meant for J2SE  RSS feed

Chong Zi Xin
Posts: 2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
hello all,

I am new to J2ME and have a few questions to ask..

i have created some other classes meant for a J2SE application initially.
but now, i am thinking of writing a midlet for it as well.
so i would like to know if it is correct to say that i just need to write a midlet to replace my initial driver class of the J2SE version, not having to rewrite the codes for the other classes.

i tried zipping up all the necessary class files and putting it into the lib directory my project file in the WTK.

the following errors was what i got when attempting to build:-
on WTK2.2
ERROR: floating-point constants should not appear
Error preverifying class DefleaingService
Build failed

on WTK2.1
Error preverifying class Date
java/lang/NoClassDefFoundError: java/lang/Cloneable
Build failed

Date and DefleaingService are two of the classes in the zip file.
Certain floating point constants are defined in the classes. i understand that J2ME does not support float or double, is there anyway to overcome this limitation so that i could reuse my classes?
and also could anyone enlighten me as of why the two different versions of the WTK gave me different errors when building.

Please help..

Thanks alot in advance.
Mark Spritzler
Posts: 17309
IntelliJ IDE Mac Spring
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Remember that the J2ME APIs are a subset of J2SE and don't have all the classes. In MIDP 1.0 there was no floating point variables. There was MathFP a third party tool.

So some of those classes aren't available and would cause these errors. Like you said. The reason why you get different errors in different versions of WTK is because one is probably using MIDP 1.0 CLDC 1.0 and the other uses MIDP 2.0, CLDC 1.1

  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!