Use Collection#forEach() instead of Stream#forEach() for simplicity

Change-Id: I0a1aea4bdb5d305c50273e6ff749fe71bd2a295a
diff --git a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllActiveAlarms.java b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllActiveAlarms.java
index 1687bca..7fa9d06 100644
--- a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllActiveAlarms.java
+++ b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllActiveAlarms.java
@@ -37,7 +37,7 @@
     }
 
     void printAlarms(Set<Alarm> alarms) {
-        alarms.stream().forEach((alarm) -> {
+        alarms.forEach((alarm) -> {
             print(ToStringBuilder.reflectionToString(alarm, ToStringStyle.SHORT_PREFIX_STYLE));
         });
     }
diff --git a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarms.java b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarms.java
index 90a00c7..a44dc1e 100644
--- a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarms.java
+++ b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarms.java
@@ -36,7 +36,7 @@
     }
 
     void printAlarms(Set<Alarm> alarms) {
-        alarms.stream().forEach((alarm) -> {
+        alarms.forEach((alarm) -> {
             print(ToStringBuilder.reflectionToString(alarm, ToStringStyle.SHORT_PREFIX_STYLE));
         });
     }
diff --git a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarmsCounts.java b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarmsCounts.java
index 578cee9..9f689e4 100644
--- a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarmsCounts.java
+++ b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetAllAlarmsCounts.java
@@ -36,7 +36,7 @@
     }
 
     void printCounts(Map<Alarm.SeverityLevel, Long> alarmCounts) {
-        alarmCounts.entrySet().stream().forEach((countEntry) -> {
+        alarmCounts.entrySet().forEach((countEntry) -> {
             print(String.format("%s, %d",
                     countEntry.getKey(), countEntry.getValue()));
 
diff --git a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetDeviceAlarmsCounts.java b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetDeviceAlarmsCounts.java
index 0d62c39..f446ef7 100644
--- a/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetDeviceAlarmsCounts.java
+++ b/apps/faultmanagement/fmcli/src/main/java/org/onosproject/faultmanagement/alarms/cli/GetDeviceAlarmsCounts.java
@@ -42,9 +42,9 @@
     }
 
     void printCounts(Map<Alarm.SeverityLevel, Long> alarmCounts) {
-        alarmCounts.entrySet().stream().forEach((countEntry) -> {
+        alarmCounts.entrySet().forEach((countEntry) -> {
             print(String.format("%s, %d",
-                                countEntry.getKey(), countEntry.getValue()));
+                    countEntry.getKey(), countEntry.getValue()));
 
         });
     }
diff --git a/apps/faultmanagement/fmgui/src/main/java/org/onosproject/faultmanagement/alarms/gui/AlarmTableMessageHandler.java b/apps/faultmanagement/fmgui/src/main/java/org/onosproject/faultmanagement/alarms/gui/AlarmTableMessageHandler.java
index 3d957a4..46c3a9d 100644
--- a/apps/faultmanagement/fmgui/src/main/java/org/onosproject/faultmanagement/alarms/gui/AlarmTableMessageHandler.java
+++ b/apps/faultmanagement/fmgui/src/main/java/org/onosproject/faultmanagement/alarms/gui/AlarmTableMessageHandler.java
@@ -113,7 +113,7 @@
                     AlarmServiceUtil.lookUpAlarms() :
                     AlarmServiceUtil.lookUpAlarms(DeviceId.deviceId(devId));
 
-            alarms.stream().forEach((alarm) -> {
+            alarms.forEach((alarm) -> {
                 populateRow(tm.addRow(), alarm);
             });
 
diff --git a/apps/influxdbmetrics/src/main/java/org/onosproject/influxdbmetrics/DefaultInfluxDbMetricsReporter.java b/apps/influxdbmetrics/src/main/java/org/onosproject/influxdbmetrics/DefaultInfluxDbMetricsReporter.java
index a0dca3b..2945eed 100644
--- a/apps/influxdbmetrics/src/main/java/org/onosproject/influxdbmetrics/DefaultInfluxDbMetricsReporter.java
+++ b/apps/influxdbmetrics/src/main/java/org/onosproject/influxdbmetrics/DefaultInfluxDbMetricsReporter.java
@@ -195,7 +195,7 @@
         MetricRegistry moddedRegistry = new MetricRegistry();
         ControllerNode node = clusterService.getLocalNode();
         String prefix = node.id().id() + ".";
-        metricRegistry.getNames().stream().forEach(name ->
+        metricRegistry.getNames().forEach(name ->
                 moddedRegistry.register(prefix + name, metricRegistry.getMetrics().get(name)));
 
         return moddedRegistry;
diff --git a/apps/openstacknetworking/routing/src/main/java/org/onosproject/openstacknetworking/routing/OpenstackRoutingManager.java b/apps/openstacknetworking/routing/src/main/java/org/onosproject/openstacknetworking/routing/OpenstackRoutingManager.java
index 970a331..b6aeab9 100644
--- a/apps/openstacknetworking/routing/src/main/java/org/onosproject/openstacknetworking/routing/OpenstackRoutingManager.java
+++ b/apps/openstacknetworking/routing/src/main/java/org/onosproject/openstacknetworking/routing/OpenstackRoutingManager.java
@@ -215,7 +215,7 @@
                         .filter(h -> routableNetIds.contains(h.annotations().value(NETWORK_ID)))
                         .collect(Collectors.toSet());
 
-        hosts.stream().forEach(h -> populateRoutingRules(h, routableNets));
+        hosts.forEach(h -> populateRoutingRules(h, routableNets));
     }
 
     private void unsetRoutes(OpenstackRouter osRouter, OpenstackNetwork osNet) {
@@ -226,7 +226,7 @@
                         h.annotations().value(NETWORK_ID), osNet.id()))
                 .forEach(h -> removeRoutingRules(h, routableNets));
 
-        routableNets.stream().forEach(n -> {
+        routableNets.forEach(n -> {
             Tools.stream(hostService.getHosts())
                     .filter(h -> Objects.equals(
                             h.annotations().value(NETWORK_ID),
@@ -269,7 +269,7 @@
                 .matchTunnelId(Long.valueOf(osNet.segmentId()))
                 .matchEthDst(Constants.DEFAULT_GATEWAY_MAC);
 
-        nodeService.completeNodes().stream().forEach(node -> {
+        nodeService.completeNodes().forEach(node -> {
             ForwardingObjective.Flag flag = node.type().equals(GATEWAY) ?
                     ForwardingObjective.Flag.VERSATILE :
                     ForwardingObjective.Flag.SPECIFIC;
@@ -359,8 +359,7 @@
                 .fromApp(appId)
                 .add();
 
-        gatewayService.getGatewayDeviceIds().stream()
-                .forEach(deviceId -> flowObjectiveService.forward(deviceId, fo));
+        gatewayService.getGatewayDeviceIds().forEach(deviceId -> flowObjectiveService.forward(deviceId, fo));
     }
 
     private void populateCnodeToGateway(long vni) {
diff --git a/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSecurityGroupManager.java b/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSecurityGroupManager.java
index e06b7fa..9b15f00 100644
--- a/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSecurityGroupManager.java
+++ b/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSecurityGroupManager.java
@@ -121,7 +121,7 @@
                 .filter(entry -> getTenantId(entry.getKey()).equals(tenantId))
                 .forEach(entry -> {
                     Host local = entry.getKey();
-                    entry.getValue().stream().forEach(sgRule -> {
+                    entry.getValue().forEach(sgRule -> {
                         setSecurityGroupRule(local.location().deviceId(),
                                 sgRule.rule(),
                                 getIp(local),
@@ -250,10 +250,10 @@
         }
 
         Set<SecurityGroupRule> rules = Sets.newHashSet();
-        osPort.securityGroups().stream().forEach(sgId -> {
+        osPort.securityGroups().forEach(sgId -> {
             OpenstackSecurityGroup osSecGroup = openstackService.securityGroup(sgId);
             if (osSecGroup != null) {
-                osSecGroup.rules().stream().forEach(rule -> rules.addAll(getSgRules(rule)));
+                osSecGroup.rules().forEach(rule -> rules.addAll(getSgRules(rule)));
             } else {
                 // TODO handle the case that the security group removed
                 log.warn("Failed to get security group {}", sgId);
diff --git a/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSwitchingArpHandler.java b/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSwitchingArpHandler.java
index c35371f..d70524c 100644
--- a/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSwitchingArpHandler.java
+++ b/apps/openstacknetworking/switching/src/main/java/org/onosproject/openstacknetworking/switching/OpenstackSwitchingArpHandler.java
@@ -194,8 +194,7 @@
             log.warn("Failed to get OpenStack network for {}", host);
             return;
         }
-        osNet.subnets().stream()
-                .forEach(subnet -> gateways.add(Ip4Address.valueOf(subnet.gatewayIp())));
+        osNet.subnets().forEach(subnet -> gateways.add(Ip4Address.valueOf(subnet.gatewayIp())));
     }
 
     @Override
diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java
index c07e1ab..f1fcbbc 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/manager/impl/VtnManager.java
@@ -530,7 +530,7 @@
         Iterable<Host> allHosts = hostService.getHosts();
         String tunnelName = "vxlan-" + DEFAULT_IP;
         if (allHosts != null) {
-            Sets.newHashSet(allHosts).stream().forEach(host -> {
+            Sets.newHashSet(allHosts).forEach(host -> {
                 MacAddress hostMac = host.mac();
                 String ifaceId = host.annotations().value(IFACEID);
                 if (ifaceId == null) {
@@ -549,7 +549,7 @@
                         .getControllerIpOfSwitch(remoteDevice);
                 if (remoteControllerIp == null) {
                     log.error("Can't find remote controller of device: {}",
-                              remoteDeviceId.toString());
+                            remoteDeviceId.toString());
                     return;
                 }
                 IpAddress remoteIpAddress = IpAddress
@@ -557,10 +557,10 @@
                 ports.stream()
                         .filter(p -> p.name().equalsIgnoreCase(tunnelName))
                         .forEach(p -> {
-                    l2ForwardService
-                            .programTunnelOut(device.id(), segmentationId, p,
-                                              hostMac, type, remoteIpAddress);
-                });
+                            l2ForwardService
+                                    .programTunnelOut(device.id(), segmentationId, p,
+                                            hostMac, type, remoteIpAddress);
+                        });
             });
         }
     }
@@ -899,7 +899,7 @@
             programRouterInterface(routerInf, operation);
             if (interfacesSet.size() == 1) {
                 routerInfFlagOfTenantRouter.remove(tenantRouter);
-                interfacesSet.stream().forEach(r -> {
+                interfacesSet.forEach(r -> {
                     programRouterInterface(r, operation);
                 });
             }
@@ -961,7 +961,7 @@
                     TenantRouter tenantRouter = TenantRouter
                             .tenantRouter(r.tenantId(), r.routerId());
                     routerInfFlagOfTenantRouter.put(tenantRouter, true);
-                    interfacesSet.stream().forEach(f -> {
+                    interfacesSet.forEach(f -> {
                         programRouterInterface(f, operation);
                     });
                     break;
@@ -977,7 +977,7 @@
         SegmentationId l3vni = vtnRscService.getL3vni(tenantRouter);
         // Get all the host of the subnet
         Map<HostId, Host> hosts = hostsOfSubnet.get(routerInf.subnetId());
-        hosts.values().stream().forEach(h -> {
+        hosts.values().forEach(h -> {
             applyEastWestL3Flows(h, l3vni, operation);
         });
     }
@@ -1292,7 +1292,7 @@
                 .stream().filter(r -> r.tenantId().equals(tenantId))
                 .filter(r -> r.subnetId().equals(subnetId))
                 .collect(Collectors.toSet());
-        hostInterfaces.stream().forEach(routerInf -> {
+        hostInterfaces.forEach(routerInf -> {
             Set<RouterInterface> interfacesSet = Sets.newHashSet(interfaces)
                     .stream().filter(r -> r.tenantId().equals(tenantId))
                     .filter(r -> r.routerId().equals(routerInf.routerId()))
diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/ClassifierServiceImpl.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/ClassifierServiceImpl.java
index 17471f6..c5697b5 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/ClassifierServiceImpl.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/ClassifierServiceImpl.java
@@ -105,7 +105,7 @@
             log.info("No tunnel port in device");
             return;
         }
-        Sets.newHashSet(localTunnelPorts).stream().forEach(tp -> {
+        Sets.newHashSet(localTunnelPorts).forEach(tp -> {
             TrafficSelector selector = DefaultTrafficSelector.builder()
                     .matchInPort(tp).add(Criteria.matchTunnelId(Long
                             .parseLong(segmentationId.toString())))
diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/L2ForwardServiceImpl.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/L2ForwardServiceImpl.java
index a91b29e..7c9c30d 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/L2ForwardServiceImpl.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/table/impl/L2ForwardServiceImpl.java
@@ -83,7 +83,7 @@
             log.info("No other host port and tunnel in the device");
             return;
         }
-        Sets.newHashSet(localVmPorts).stream().forEach(lp -> {
+        Sets.newHashSet(localVmPorts).forEach(lp -> {
             TrafficSelector selector = DefaultTrafficSelector.builder()
                     .matchInPort(lp).matchEthDst(MacAddress.BROADCAST)
                     .add(Criteria.matchTunnelId(Long
@@ -124,7 +124,7 @@
             log.info("No other host port or tunnel ports in the device");
             return;
         }
-        Sets.newHashSet(localTunnelPorts).stream().forEach(tp -> {
+        Sets.newHashSet(localTunnelPorts).forEach(tp -> {
             TrafficSelector selector = DefaultTrafficSelector.builder()
                     .matchInPort(tp)
                     .add(Criteria.matchTunnelId(Long
diff --git a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnData.java b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnData.java
index b8715d2..2ee889a 100644
--- a/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnData.java
+++ b/apps/vtn/vtnmgr/src/main/java/org/onosproject/vtn/util/VtnData.java
@@ -128,7 +128,7 @@
                                       FixedIp fixedIP) {
         if (vPortStore != null) {
             List<VirtualPort> vPorts = new ArrayList<>();
-            vPortStore.values().stream().forEach(p -> {
+            vPortStore.values().forEach(p -> {
                 Iterator<FixedIp> fixedIps = p.fixedIps().iterator();
                 while (fixedIps.hasNext()) {
                     if (fixedIps.next().equals(fixedIP)) {
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/impl/VirtualPortManager.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/impl/VirtualPortManager.java
index b0c5df8..c394e85 100644
--- a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/impl/VirtualPortManager.java
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/virtualport/impl/VirtualPortManager.java
@@ -150,7 +150,7 @@
     public VirtualPort getPort(FixedIp fixedIP) {
         checkNotNull(fixedIP, FIXEDIP_NOT_NULL);
         List<VirtualPort> vPorts = new ArrayList<>();
-        vPortStore.values().stream().forEach(p -> {
+        vPortStore.values().forEach(p -> {
             Iterator<FixedIp> fixedIps = p.fixedIps().iterator();
             while (fixedIps.hasNext()) {
                 if (fixedIps.next().equals(fixedIP)) {
diff --git a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/gui/SfcViewMessageHandler.java b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/gui/SfcViewMessageHandler.java
index a17ef6c..4d2f064 100644
--- a/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/gui/SfcViewMessageHandler.java
+++ b/apps/vtn/vtnweb/src/main/java/org/onosproject/vtnweb/gui/SfcViewMessageHandler.java
@@ -129,7 +129,7 @@
             StringBuffer srcipbuf = new StringBuffer();
             StringBuffer dstipbuf = new StringBuffer();
             if (flowClassifierList != null) {
-                flowClassifierList.stream().forEach(fcid -> {
+                flowClassifierList.forEach(fcid -> {
                     FlowClassifier fc = fcs.getFlowClassifier(fcid);
                     String srcip = fc.srcIpPrefix().toString();
                     String dstip = fc.dstIpPrefix().toString();
@@ -157,11 +157,11 @@
             VirtualPortService vps = get(VirtualPortService.class);
             List<VirtualPort> vpList = new ArrayList<VirtualPort>();
             if (portPairGroupList != null) {
-                portPairGroupList.stream().forEach(ppgid -> {
+                portPairGroupList.forEach(ppgid -> {
                     PortPairGroup ppg = ppgs.getPortPairGroup(ppgid);
                     List<PortPairId> portPairList = ppg.portPairs();
                     if (portPairList != null) {
-                        portPairList.stream().forEach(ppid -> {
+                        portPairList.forEach(ppid -> {
                             PortPair pp = pps.getPortPair(ppid);
                             VirtualPort vp = vps.getPort(VirtualPortId.portId(pp.ingress()));
                             vpList.add(vp);
diff --git a/apps/xosclient/src/main/java/org/onosproject/xosclient/impl/DefaultVtnPortApi.java b/apps/xosclient/src/main/java/org/onosproject/xosclient/impl/DefaultVtnPortApi.java
index 8054dfe..1061b27 100644
--- a/apps/xosclient/src/main/java/org/onosproject/xosclient/impl/DefaultVtnPortApi.java
+++ b/apps/xosclient/src/main/java/org/onosproject/xosclient/impl/DefaultVtnPortApi.java
@@ -115,9 +115,9 @@
         }
 
         Map<IpAddress, MacAddress> addressPairs = Maps.newHashMap();
-        osPort.getAllowedAddressPairs().stream().forEach(
+        osPort.getAllowedAddressPairs().forEach(
                 pair -> addressPairs.put(IpAddress.valueOf(pair.getIpAddress()),
-                                         MacAddress.valueOf(pair.getMacAddress())));
+                        MacAddress.valueOf(pair.getMacAddress())));
 
         return VtnPort.builder()
                 .id(VtnPortId.of(osPort.getId()))