tiny java wifi device

I want to create a purpose built device capable of

1. running a java vm
2. connecting to a wireless network via dhcp
3. playing a simple sound

I'm looking for advice regarding who could

• what kind of devices are available pre-built
• who could manufacture a 开发者_如何转开发single device
• who could manufacture devices in small scale

any ideas appreciated!

I don't know for sure about WiFi, the Sun Spot may do exactly what you want.