I want to sprint in Minecraft by pressing the "w" key once. Is this possible? If so, how
By default, sprinting is on CTRL. I always press CTRL. I no longer use double W at all.
Can you switch it all at once?
Should go, you have to stop going forward so that W is free. But theoretically it should work.
Why not just go through the key bindings when you have questions like this?
You could get the "Togglesprint" mod, where you can adjust it. I don't use a toggle sprint myself because I hate that. I always press the "R" key when I want to sprint.