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

Change-Id: I0a1aea4bdb5d305c50273e6ff749fe71bd2a295a
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);