You can use JavaConversions
for that:
import scala.collection.JavaConversions;
//...
for (YourEntryClass entry : JavaConversions.asJavaIterable(yourListBuffer)) {
(I've switched to placeholder types and vars, since otherwise the example would be less readable)
See this answer to an "inverse" question for general info, and this question+answer for an explanation of the design approach taken in the Scala library.