Improve runtime performance

components/apimgt-extensions/org.wso2.carbon.apimgt.webapp.publisher/src/main/java/org/wso2/carbon/apimgt/webapp/publisher/APIPublisherUtil.java

@@ -44,7 +44,7 @@ public class APIPublisherUtil {
     private static List<HTTPMethod> httpMethods;
 
     static {
-        httpMethods = new ArrayList<HTTPMethod>();
+        httpMethods = new ArrayList<HTTPMethod>(5);
         httpMethods.add(HTTPMethod.GET);
         httpMethods.add(HTTPMethod.POST);
         httpMethods.add(HTTPMethod.DELETE);

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/app/mgt/ApplicationManagerProviderServiceImpl.java

@@ -268,7 +268,7 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
                 log.debug("num of apps installed:" + installedAppList.size());
             }
             List<Application> appsToAdd = new ArrayList<>();
-            List<Integer> appIdsToRemove = new ArrayList<>();
+            List<Integer> appIdsToRemove = new ArrayList<>(installedAppList.size());
 
             for (Application installedApp : installedAppList) {
                 if (!applications.contains(installedApp)) {