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This is my code:
statement.clearBatch();
statement.cancel();
statement.close();
Is it necessary to clearBatch and cancel?
clearBatch()clears the current batch so you can add a new one.cancel()cancels the currently executing statement even in another thread.close()closes the statement and releases any associated resources such asResultSets.They all do different things. You call them when you want those things done. I don’t see that any of them implies any other.