This is how you implement java.lang.StringBuffer in Java: https://github.com/XerTheSquirrel/SquirrelJME/blob/trunk/runt/apis/cldc-compact/java/lang/StringBuffer.java !
@ari Well SquirrelJME is just a hobby project. Also Java ME is far smaller than Java SE, I tried Java SE but I was driven to insanity. But I think a smaller tinier Java is pretty interesting, so I decided to do that instead. Also there will be J2ME compatibility also.
As for StringBuffer it is just a thread safe StringBuilder, so it is easy to implement.
@ari I have not really made progress on the project as I have been going in many circles, but this time I have gotten much more organized so you can see progress here: https://github.com/XerTheSquirrel/SquirrelJME/projects/2 .