Debuggin J2ME application

Question

Hellos everybody...
I'm working with Eclipse 3 and the plugin for J2ME EclipseME 0.55
I'm wana to know how can i debug a j2me application.
thank.....

Answer 1

In a few words, if emulator support UEI standart, then it has following options:
-Xdebug Enable runtime debugging. -Xrunjdwp must also be specified.
-Xrunjdwp:<name>=<value> Starts the JDWP debug session with various sub-options. <name> is one of the sub-option names. Appropriate values for <value> is determined by the sub-option name. -Xdebug must also be specified.
The <name> may be:
transport The transport mechanism used to communicate with the debugger. Only the mechanism for dt_socket value is currently implemented.
address The transport address for the debugger connection. This can be either 'host:port' or 'port' formats. If the 'port' format used, the host is assumed to be localhost.
server Start the debug agent as a server. The debugger must connect to the port specified.
suspend Whether or not the VM should suspend immediately after establishing a connection with the debugger. Values must be either 'y' or 'n'. The default is 'y'.
You can read this help in emulators, that supports UEI.
So using any IDE, that supports socket remote debuging, it is possible to debug midlets.
I using Ant + IDEA and sometimes Ant + Eclipse without plugins. In Eclipse you must deselect checkbox about "suspend VM" in debug options.
Here my Ant task for debugging:
     <target name="runNokia_S40_debug_Alone">
          <exec executable="C:\Nokia\Devices\Nokia_S40_DP20_SDK_1_0\bin\emulator.exe">
               <arg value="-Xdebug"/>
               <arg value="-Djava.compiler=NONE"/>
               <arg value="-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=2342"/>
               <arg value="-Xdescriptor:${project.dir}/${project.name}.jad"/>
          </exec>
     </target>At fisrt I run the Ant task, then I run remote debug in IDE.