[Java] Added missing license headers

apache / arrow-cookbook

Apache Arrow Cookbook

https://arrow.apache.org/

Apache License 2.0

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Closed paliwalashish closed 2 years ago

paliwalashish commented 2 years ago

Added missing License headers to files in java cookbook

paliwalashish commented 2 years ago

@lidavidm Sorry for bothering you again. Kindly review when time permits :) One more is in pipeline