Extracting the terms of a String using regex in java

Extracting the terms of a String using regex in java

Sorry for the bad title, but really could not find some other words for
it. But, I am working in java and i have the following pattern matching to
do.
The pattern is (\\w)*(\\s+)(\\w)*(\\,)(\\s*)(\\w)*(\\,)?(\\s*)(\\w)*
The String to be matched is of the type "add r0, r1, r2". Now, how can I
extract the all the individual strings from the above string, ie.
add,r0,r1 and r2? To make it clearer, if the input string were "mov r1,
r4", I would like to extract mov, r1 and r4. How to go about this?