diff --git a/core/net/src/test/java/org/onosproject/net/intent/impl/compiler/MockResourceService.java b/core/net/src/test/java/org/onosproject/net/intent/impl/compiler/MockResourceService.java
index c808d91ec1..18ba79edd1 100644
--- a/core/net/src/test/java/org/onosproject/net/intent/impl/compiler/MockResourceService.java
+++ b/core/net/src/test/java/org/onosproject/net/intent/impl/compiler/MockResourceService.java
@@ -40,6 +40,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 class MockResourceService implements ResourceService {
@@ -49,7 +50,7 @@ class MockResourceService implements ResourceService {
     @Override
     public List<ResourceAllocation> allocate(ResourceConsumer consumer, List<Resource> resources) {
         assignment.putAll(
-                resources.stream().collect(Collectors.toMap(x -> x, x -> consumer))
+                resources.stream().collect(Collectors.toMap(Function.identity(), x -> consumer))
         );
 
         return resources.stream()
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/meter/impl/MeterManager.java b/incubator/net/src/main/java/org/onosproject/incubator/net/meter/impl/MeterManager.java
index ea4af1a6e4..7f469af586 100644
--- a/incubator/net/src/main/java/org/onosproject/incubator/net/meter/impl/MeterManager.java
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/meter/impl/MeterManager.java
@@ -50,6 +50,7 @@ import org.slf4j.Logger;
 
 import java.util.Collection;
 import java.util.Map;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import static org.slf4j.LoggerFactory.getLogger;
@@ -209,7 +210,7 @@ public class MeterManager extends AbstractListenerProviderRegistry<MeterEvent, M
             //FIXME: FOLLOWING CODE CANNOT BE TESTED UNTIL SOMETHING THAT
             //FIXME: IMPLEMENTS METERS EXISTS
             Map<Pair<DeviceId, MeterId>, Meter> storedMeterMap = store.getAllMeters().stream()
-                    .collect(Collectors.toMap(m -> Pair.of(m.deviceId(), m.id()), m -> m));
+                    .collect(Collectors.toMap(m -> Pair.of(m.deviceId(), m.id()), Function.identity()));
 
             meterEntries.stream()
                     .filter(m -> storedMeterMap.remove(Pair.of(m.deviceId(), m.id())) != null)