tree d30f0d4e0878fa84219c528c16be657b4221da9a
parent 4da1270fb9814f230e064e995bb379db6a4d25d4
author Zhu Libo <libo.zhu@intel.com> 1516211024 +0800
committer liboNet <libo.zhu@intel.com> 1516383645 +0800

Sonar blocker issue - NullPointerExeption

use the try-with-resource statement method to fix issues:
https://sonar.onap.org/issues/search#issues=AV3BnuCb5bp_wwmIVClC
and https://sonar.onap.org/issues/search#issues=AV7t547AlaLbmlVXT_jY

Change-Id: I912be949793066bef6e3036fb474247d4d269e4f
Issue-ID: SO-165
Signed-off-by: Zhu Libo <libo.zhu@intel.com>