Clicking noise coming from the engine and a dead battery

That clicking noise is your starter, your battery is dead or severly drained and when you try to start you car, your starter selnoid is trying to turn over, but doesn't have enough juice to get it going, so it's making that clicking noise. If you have a old, dead battery, it is time to replace it, if it's new and only been drained for exmaple leaving headlight on etc... then you can try to jump your camry with a jumper cable through another vehicle. Let it the car run for about 30 min or so to have it charge. You can also take it to autozone, advance auto part and have them charge for free or test it.