How to build and run the pub sub tutorial in rosjava?

asked 2012-07-13 02:34:16 -0600

ChrisEule
26 ●4 ●6 ●7

updated 2012-07-13 02:35:03 -0600

Hello guys,

i have a problem to run the pubsub tutorial project in rosjava. I build rosjava_core successfully and followed this tutorial http://docs.rosjava.googlecode.com/hg/rosjava_core/html/getting_started.html but the step "Executing nodes" doesn't work for me unfortunatelly. The build process (../gradlew installApp) runs without any errors (only a warning "bootstrap class path not set in conjunction with -source 1.6") but there is no path "/rosjava_tutorial_pubsub/bin/rosjava_tutorial_pubsub" in directory build. Even the executable nodes (Talker and Listener) cannot be found anywhere in the project. Maybe the tutorial isn't up to date here?

thanks

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answered 2012-07-21 15:20:58 -0600

liangfok

328 ●16 ●19 ●27

I also ran into the same problem and think there is an error in the tutorial. To execute the example, I had to change:

./build/rosjava_tutorial_pubsub/bin/rosjava_tutorial_pubsub org.ros.rosjava_tutorial_pubsub.Talker & ./build/rosjava_tutorial_pubsub/bin/rosjava_tutorial_pubsub org.ros.rosjava_tutorial_pubsub.Listener

to:

./build/install/rosjava_tutorial_pubsub/bin/rosjava_tutorial_pubsub org.ros.sjava_tutorial_pubsub.Talker & ./build/install/rosjava_tutorial_pubsub/bin/rosjava_tutorial_pubsub org.ros.sjava_tutorial_pubsub.Listener

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What ROS version is used for this tutorial?

uzair ( 2013-11-23 09:39:36 -0600 )edit

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answered 2012-07-13 02:53:44 -0600

KruseT

7848 ●40 ●87 ●146

updated 2012-07-13 02:54:45 -0600

I just ran the tutorials, and they worked fine for me. I summarized what I found on a tutorial wiki page. http://ros.org/wiki/rosjava_core/Tutorials

For me the executable is located in build/install.

Maybe you can paste the contents of your build.gradle as well as the results of

$ find src
$ find build

here so that it is easier to understand what happened. For now I would suspect that you did not create the folder structure src/main/java as required by gradle.