Norman Maurer 6bfeb42563 Only call JNI methods if really needed
Motivation:

Calling JNI methods is pretty expensive, so we should only do if needed.

Modifications:

Lazy call methods if needed.

Result:

Better performance.
2014-12-30 19:44:07 +09:00
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2014-12-04 18:00:02 +09:00