Ubuntu - check Java version

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java -version


# Example output:
#
#     openjdk version "17.0.9" 2023-10-17
#     OpenJDK Runtime Environment (build 17.0.9+9-Ubuntu-123.10)
#     OpenJDK 64-Bit Server VM (build 17.0.9+9-Ubuntu-123.10, mixed mode, sharing)