Archived:Nokia 6230 MIDP Concept SDK Beta 0.2 does not support CLDC 1.1 (Known Issue)
Nokia 6230 MIDP Concept SDK Beta 0.2 uses "old" CLDC 1.0, instead of CLDC 1.1, which is in the Nokia 6230 phone.
Nokia 6230 is the first phone supporting CLDC 1.1, which has, for example, floating point support (classes Float and Double). However, this new configuration is not included in the Nokia 6230 MIDP Concept SDK Beta 0.2.
CLDC 1.1 classes will be included in the coming SDKs.