Can a 2002 2.4 toyota camry use petrol with ethnaol in it

It can, but nobody will recommend it, except maybe the manufacturer.
Cars aren't designed to run on ethanol, and when they do, alot of the parts can become worn and tired, quicker than usual. For the few cents you save when filling your tank up with fuel, you'll lose it all, and some when you have to cough up for some hefty repairs.

Nearly all modern cars (after 2000) are certainly designed to run on fuel with a nominated maximum proportion of ethanol, almost always a 10% maximum.
Some manufacturers of higher performance cars issue warnings against it (eg Ferrari and Porsche) but such cars usually require premium unleaded anyway. Also, marine engines and utility engines such as mowers usually cannot use E10.
Toyota specifically states for your car that E10 (no more than 10% however) is suitable. It is quite true though that fuel economy will suffer on E10, somewhat nullifying the cheaper cost. You might also notice a small decrease in performance.
Use of E10 has certainly required manufacturers to change the composition of some parts exposed to fuel, and as late as 1996-1997, Toyota was recommending to drivers of some models (Tarago) that they not use E10.
http://www.fuel-testers.com/manufacturer_fuel_recommendations_ethanol_e10.html