org.apache.flink.streaming.examples.iteration org.apache.flink.streaming.examples.iteration.util org.apache.flink.streaming.examples.join org.apache.flink.streaming.examples.join.util org.apache.flink.streaming.examples.ml org.apache.flink.streaming.examples.ml.util org.apache.flink.streaming.examples.socket org.apache.flink.streaming.examples.twitter org.apache.flink.streaming.examples.twitter.util org.apache.flink.streaming.examples.windowing org.apache.flink.streaming.examples.windowing.util org.apache.flink.streaming.examples.wordcount