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I was told to submit this here by Olivier Thomann <Olivier_Thomann@oti.com> after posting this problem to the newsgroups. I am having trouble debugging one of my projects. It's setup exactly like the other ones I have, but this is the only one that I cannot debug. When I try to hit code where i've enabled a breakpoint, i get the error msg "Attempting to install a breakpoint in the type package.name.goes.here that has no line number attributes. THe breakpoint cannot be installed. Class files must be generated with the line number attributes. Reason: Absent Line Number Information I double checked the compiler settings and the Compile with line numbers option is set to true, so I'm not entirely sure whats going on. General Steps: Create new Java project, point it at my source, use all default settings and then add the j2ee.jar in the library panel. i've compiled using the Rebuild All option as well as using ant. i cleaned out all the class files each time just to be sure. i have the tomcat plugin v2.1 from www.sysdeo.com, which i use to start up tomcat and debug my projects. i click the start tomcat button and the server starts up fine, but as soon as i hit the code that im trying to debug, i get the error msg. if you'd like to see a sample src and class file, please email me and i'll pass it to you.
Created attachment 4650 [details] sample src file if you would like the entire source, please let me know
Created attachment 4651 [details] sample class file
Could you please submit the .class file again? But this time, set the MIME type to application/octet-stream. Right now it is saved as application/java and this corrupts the attachment. I will try to see if I can fix it, but it would be better if you could simply submit it again. Thanks.
Created attachment 4653 [details] repackaging of the inital files here are example src and class files from my project.
It appears that the .class file generated doesn't contain any debug attributes. In this case I need all the dependant classes in order to be able to compile the source file. Are you sure that you didn't change the compiler settings for this project? Check the properties of this project. 1) Select the project 2) Right click>Properties>Java Compiler Do you have "Use workspace settings" selected? If not, you have "Use project settings" selected and check the "Compliance and ClassFiles">Classfile generation options.
Add CC'.
olivier, in preparation of sending you a zip of my project, i went through my project files and cleaned out all unnecessary files, including some old directories that contained remnant class files in an unused directory (WEB-INF/tmp) I am certain that there are/were no more references to this dir in my project or in my ant build.xml. I also went into the compiler preferences and UNCHECKED the compile with line numbers toggle and clicked APPLY, and then i CHECKED the compile with line numbers toggle and clicked APPLY. I did a REBUILD ALL and ran the application once more to make sure everything still worked before sending to you. Lo and behold, the debugging started working again. I cleaned out my build folder again and tried compiling with ant, and debugging worked in this scenario too. so, im not sure what the problem was - whether it was the old class files sitting around in the workspace or whether i just needed to toggle the switch a few times. if you think this could be more than a fluke, i'd be happy to continue providing you with as much information as i can. please let me know and thanks for the support.
Close as WORKSFORME. Please reopen if this happens again or if you have better indication on the nature of the problem.
