From Forum Nokia Wiki

BREW is an application development platform created by Qualcomm for mobile phones mainly CDMA phones.

Software for the BREW-enabled handsets can be developed in C or C++ . This means that porting of applications from BREW to Java ME requires good knowledge on both of the platform

Helpful links

http://forum.nokia.com/main/resources/porting/brew.html

http://forum.nokia.com/info/sw.nokia.com/id/44e159ef-7202-4870-abf9-c16d02f47e90/Porting_BREW_Games_To_Java_MIDP_v1_0_en.pdf.html

http://developer.sonyericsson.com/site/global/newsandevents/campaigns/java_3d/game_gallery/6976243c-a7f2-43c9-99bb-02ae987c4014.jsp