diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/edit/IndividualTypeRetryController.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/edit/IndividualTypeRetryController.java
index 65f3b09e6..b6af307e9 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/edit/IndividualTypeRetryController.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/edit/IndividualTypeRetryController.java
@@ -66,10 +66,7 @@ public class IndividualTypeRetryController extends BaseEditController {
 			    continue;
 			}
 			prohibitedURIset.add(vc.getURI());
-			for (Iterator<String> djURIIt = vcDao.getDisjointWithClassURIs(vc.getURI()).iterator(); djURIIt.hasNext(); ) {
-				String djURI = djURIIt.next();
-	            prohibitedURIset.add(djURI);
-			}
+			prohibitedURIset.addAll(vcDao.getDisjointWithClassURIs(vc.getURI()));
 		}
 		
 		List<VClass> eligibleVClasses = new ArrayList<VClass>();
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
index 126ac767d..8a9450480 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaAdminActions.java
@@ -133,9 +133,7 @@ public class JenaAdminActions extends BaseEditController {
     				typeSet.add((Resource) stmt.getObject());
     			}
     		}
-    		for (Resource classRes : ontModel.listClasses().toList()) {
-    			typeSet.add(classRes);
-    		}
+			typeSet.addAll(ontModel.listClasses().toList());
     		for (Resource ontClass : typeSet) {
     			if (!ontClass.isAnon()) { // Only query for named classes
     				System.out.println("Describing "+ontClass.getURI());
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/json/GetAllVClasses.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/json/GetAllVClasses.java
index 0814eeef9..64a9ef869 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/json/GetAllVClasses.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/controller/json/GetAllVClasses.java
@@ -37,9 +37,7 @@ public class GetAllVClasses extends JsonObjectProducer {
         VClassGroupsForRequest vcgc = VClassGroupCache.getVClassGroups(vreq);
         List<VClassGroup> groups = vcgc.getGroups();
         for(VClassGroup vcg: groups) {
-             for( VClass vc : vcg){
-                 vclasses.add(vc);
-             }
+            vclasses.addAll(vcg);
             
         }
        
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/EditConfigurationUtils.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/EditConfigurationUtils.java
index cc85e5fdc..dec801149 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/EditConfigurationUtils.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/VTwo/EditConfigurationUtils.java
@@ -296,9 +296,7 @@ public class EditConfigurationUtils {
 	   /** Make a copy of list of Strings. */
     public static List<String> copy(List<String> list) {
         List<String> copyList = new ArrayList<String>();
-        for(String l: list) {
-            copyList.add(l);
-        }
+        copyList.addAll(list);
         return copyList;
    }        
     
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/DefaultObjectPropertyFormGenerator.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/DefaultObjectPropertyFormGenerator.java
index 1436d1934..e44621d9c 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/DefaultObjectPropertyFormGenerator.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/DefaultObjectPropertyFormGenerator.java
@@ -145,9 +145,7 @@ public class DefaultObjectPropertyFormGenerator implements EditConfigurationGene
 	   		    if (!rangeVClass.isUnion()) {
 	   		        types.add(rangeVClass);    
 	   		    } else {
-	   		        for (VClass unionComponent : rangeVClass.getUnionComponents()) {
-	   		            types.add(unionComponent);
-	   		        }
+					types.addAll(rangeVClass.getUnionComponents());
 	   		    }
 	   		    return types;
    		    } else {
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/ManagePageGenerator.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/ManagePageGenerator.java
index a60bde138..a9b04a267 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/ManagePageGenerator.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/configuration/generators/ManagePageGenerator.java
@@ -679,9 +679,7 @@ private String getExistingIsSelfContainedTemplateQuery() {
         VClassGroupsForRequest vcgc = VClassGroupCache.getVClassGroups(vreq);
         List<VClassGroup> groups = vcgc.getGroups();
         for(VClassGroup vcg: groups) {
-             for( VClass vc : vcg){
-                 vclasses.add(vc);
-             }
+			vclasses.addAll(vcg);
             
         }
        
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/controller/ProcessRdfFormController.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/controller/ProcessRdfFormController.java
index 0b21f0586..4eaedf7fa 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/controller/ProcessRdfFormController.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/edit/n3editing/controller/ProcessRdfFormController.java
@@ -207,9 +207,7 @@ public class ProcessRdfFormController extends FreemarkerHttpServlet{
 		
 	    public static List<String> makeListCopy(List<String> list) {
 	    	List<String> copyOfN3 = new ArrayList<String>();
-            for( String str : list){
-                copyOfN3.add(str);
-            }
+			copyOfN3.addAll(list);
             return copyOfN3;
 	    }
 	     
diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/reasoner/ABoxRecomputer.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/reasoner/ABoxRecomputer.java
index 9fd4cca96..4dbbc7bbb 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/reasoner/ABoxRecomputer.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/reasoner/ABoxRecomputer.java
@@ -239,9 +239,7 @@ public class ABoxRecomputer {
                 }
             }
             if(rebuildModel.size() - prevRebuildSize > 0) {
-                for (String sameAsInd : sameAsInds) {
-                    individualQueue.add(sameAsInd);
-                }
+                individualQueue.addAll(sameAsInds);
             }
         }
         return additionalInferences;
diff --git a/api/src/main/java/edu/ucsf/vitro/opensocial/OpenSocialManager.java b/api/src/main/java/edu/ucsf/vitro/opensocial/OpenSocialManager.java
index 93b9d8fdc..a00d17399 100644
--- a/api/src/main/java/edu/ucsf/vitro/opensocial/OpenSocialManager.java
+++ b/api/src/main/java/edu/ucsf/vitro/opensocial/OpenSocialManager.java
@@ -240,9 +240,7 @@ public class OpenSocialManager {
 				}
 			}
 		}
-		for (PreparedGadget gadget : removedGadgets) {
-			gadgets.remove(gadget);
-		}
+		gadgets.removeAll(removedGadgets);
 	}
 
 	public void removeGadget(String name) {