Jet production cross section and jet properties in pp collisions at sqrt{s} = 7TeV with the ATLAS detector

Jet cross sections have been measured with the ATLAS detector for the first time in proton-proton collisions at center-of-mass energy of $7~ eraelectronvolt$. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and angle $chi$. The experimental results are compared to expectations based on next-to-leading order QCD.