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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

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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.

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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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