4.0.0 org.example java_demo 1.0-SNAPSHOT 1.11.1 org.apache.flink flink-streaming-java_2.12 ${flink.version} org.apache.flink flink-java ${flink.version} org.apache.flink flink-clients_2.12 ${flink.version} org.apache.flink flink-core ${flink.version}