java - How to sort solrdocumentlist object -

in fact, me need solution random sorting in case. tried sort collections

solrdocumentlist randsolrdocs = collections.shuffle(solrdoclist) 

but received error type mismatch: cannot convert void solrdocumentlist.

please, that.

collections.shuffle(solrdoclist) shuffles list pass parameter. method has no return value.

so after call, solrdoclist randomized.