  A measurement of inclusive jet and dijet production cross sections is
presented. Data from large hadron collider (LHC) proton-proton collisions at
$\sqrt{s}=$ 7 TeV, corresponding to $4.67 fb^{-1}$ of integrated luminosity,
have been collected with the compact muon solenoid (CMS) detector. Jets are
reconstructed with the anti-$k_T$ clustering algorithm with size parameter
$R=0.7$, extending to rapidity $|y|=2.5$, transverse momentum $p_{T}=$ 2 TeV,
and dijet invariant mass $M_{JJ}=$ 5 TeV. The measured cross sections are
corrected for detector effects and compared to perturbative QCD predictions at
next-to-leading order (NLO), corrected for non perturbative (NP) factors, using
various sets of parton distribution functions. Determination Of Jet Energy
Correction from $\sqrt{s}=$ 7 TeV CMS data is presented. The individual
components are determined. The jet energy scale uncertainty factors are also
shown.
