why jdb can't display the line number?

Hi,

I use jdb to debug HelloWorld.java run on cldc_hi. Where cldc_hi is build ENABLE_JAVA_DEBUGGER=true

I compile HelloWorld.java with -g

And use the same java version when compile and launch

In jdb I input

stop in HelloWorld.main

run

step ...

jdb shows丗

Step completed: Thread1[1] thread="Thread1", java.lang.Class.initialize(), line=-1, bci=180

what cause line gives -1 ?

Thanks very much for any suggestions

gan

[498 byte] By [ganxja] at [2007-10-1 19:10:58]