What type of dog is this?

I'm looking to get a dog! however i dont know what type to get, i need a dog that wont jump ( i dont have a high wall) One that likes exercise about twice a week. A dog that is ok being alone a few hours ( 5) a day, one that doesnt slobber everywhere, likes other dogs and people, and is a good learner. I would like a larger dog! I was thinking a boxer, maybe a rotty? Can someone help me out? Thanks