Just for the archives: Sun's J2ME Wireless Toolkit version 1.0.4 (the self-extracting j2me_wireless_toolkit-1_0_4_02-linux-i386.bin ) works ok on OpenBSD -current when using the jdk-1.4.2 port (with the jdk1.3.1-linux it has GUI problems and jdk-1.5.0 can't build).
You have however to make a link WTK104/wtklib/Linux -> OpenBSD or you'll get a java.lang.ExceptionInInitializerError. After that you can run WTK104/bin/ktoolbar to build and emulate midlets