After you have developed and debugged a program in the IDE, export it to the target system platform and test it there. If you want to debug the code on the target system, you can use an external debugger to analyze the program.
VisualAge for Java,
Enterprise Edition, comes with three external debuggers to help you debug your Java
programs on specific platforms.
In order for an external debugger to work with the code, you must export source code and bytecode, and you must select the Include debug attributes in .class files option in the Export SmartGuide.