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tueda/Java-Colab.ipynb

Last active September 29, 2024 21:29
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Java-Colab.ipynb
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@jmmanipadam
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followed theinstructions, the code i pasted is running but no output seen. Why?

@tueda
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tueda commented Nov 14, 2022

@jmmanipadam You need to open the notebook file in Colab (copy&paste code doesn't work), because you need to switch the Jupyter Kernel type to "java" (impossible from the Colab UI, saved in the .ipynb file). That is why I made this template notebook.

@benrobideau
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Does this still currently work? I've been running into the issue of a never-ending "Connecting...". I've been troubleshooting for about a day with no luck.

@tueda
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tueda commented Dec 13, 2022 •
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Oh, now the Java Kernel actually seems to stop at "Connecting"...

SpencerPark/IJava#138
googlecolab/colabtools#3267

@tueda
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tueda commented Dec 21, 2022

See the answer in https://stackoverflow.com/a/74821762 and try his notebook https://colab.research.google.com/gist/SpencerPark/447de114fcd3e6a272dc140809462e30.

@tueda
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tueda commented Feb 21, 2024

For reference, nowadays the easiest way to run Java on Colab would be:

  1. Copy and paste 4 lines in https://github.com/jupyter-java#installing-in-online-jupyter-notebooks, and run them.
  2. Change runtime type to java (IJava/j!).

Then the above examples work well (including %maven ...).

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