Does anyone know of any sprite collections?

I am making a 2D Java game. I want the game to look nice, so I need good sprites, but I want to focus on the coding of the game, not the graphics design. This project has a time constraint so having premade sprites would be very helpful. Does anyone know of any 开发者_如何转开发good sprite collections?

Try Open Game Art.

Quoted:

OpenGameArt.org is a community that brings like-minded coders and artists together for the purpose of creating Open Source video games, by providing a human-edited, searchable database of freely-licensed art resources.