java program to copy files from/to mobile device

Is there a java api that can be used to write a program on a desktop computer, a program to connect to a Windows Mobile 6 device and copy a file开发者_高级运维 from/to the device?

my question, why does the desktop device must waiting to connect the mobile device. It's not easier when you write a JavaME run on the mobile device. So when this found the desktop device, ask to send the file over bluetooth.