Unshow variable in Debug Java Eclipse when add jar file

Question

I use jxl-2.6.9.jar to read excel in java by eclipse. But when I debug:

1)it shows "source not found". And when i use any *.jar file it still show "source not found" and doesn't show any variables. It debug too long to see variables.

2)It just show a lot of line of "Launcher, Event Dispath ...", doesn't show line by line on code as normal dubug when don't use jar file.

3)I search on google some ways as: "Edit source lookup path" but it doesn't work.

4)Console: No thing.

5) Project run good but not debug.

Answer 1

While debugging try STEP OVER(F6) instead of STEP INTO(F5) maybe the 'source not found ' errors which you are getting were in relation to external libraries which you do not need to debug. Thanks! and if the solution doesn't work,please attach a screenshot of your problem it will be more easy to understand the exact problem.

Answer 2

if you don't have a problem switching to jxl-2.6.12 you can download the jar and the sources here at maven central

when eclipse tells you "source not found" point it to the source file.

i would strongly recommend using maven in the future, even for small projects. with maven you can automatically download source and documentation for your external libraries.