[jira] [Created] (FLINK-17277) Apply IntelliJ recommendations to training exercises

[Shang Yuanchun (Jira)]

Nico Kruber created FLINK-17277:
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             Summary: Apply IntelliJ recommendations to training exercises
                 Key: FLINK-17277
                 URL: https://issues.apache.org/jira/browse/FLINK-17277
             Project: Flink
          Issue Type: Improvement
          Components: Training Excercises
            Reporter: Nico Kruber
            Assignee: Nico Kruber
             Fix For: 1.10.1, 1.11.0


IntelliJ has a few recommendations on the original code of the training exercises. These should be addressed to serve as good reference code.



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