Use StringBuilder instead of StringBuffer (#10154)

6 files changed, 6 insertions, 6 deletions

diff --git a/client/src/main/java/com/vaadin/client/ui/Action.java b/client/src/main/java/com/vaadin/client/ui/Action.java
index ed81eefb1c..d0a05ca6e7 100644
--- a/client/src/main/java/com/vaadin/client/ui/Action.java
+++ b/client/src/main/java/com/vaadin/client/ui/Action.java
@@ -40,7 +40,7 @@ public abstract class Action implements Command {
     public abstract void execute();
 
     public String getHTML() {
-        final StringBuffer sb = new StringBuffer();
+        final StringBuilder sb = new StringBuilder();
         sb.append("<div>");
         // Could store the icon in a field instead, but it doesn't really matter
         // right now because Actions are recreated every time they are needed
diff --git a/client/src/main/java/com/vaadin/client/ui/VComboBox.java b/client/src/main/java/com/vaadin/client/ui/VComboBox.java
index f38d76e11d..37b94ef8d6 100644
--- a/client/src/main/java/com/vaadin/client/ui/VComboBox.java
+++ b/client/src/main/java/com/vaadin/client/ui/VComboBox.java
@@ -136,7 +136,7 @@ public class VComboBox extends Composite implements Field, KeyDownHandler,
 
         @Override
         public String getDisplayString() {
-            final StringBuffer sb = new StringBuffer();
+            final StringBuilder sb = new StringBuilder();
             ApplicationConnection client = connector.getConnection();
             final Icon icon = client
                     .getIcon(client.translateVaadinUri(untranslatedIconUri));
diff --git a/client/src/main/java/com/vaadin/client/ui/VMenuBar.java b/client/src/main/java/com/vaadin/client/ui/VMenuBar.java
index 2a1ba37ac8..8f0026dc14 100644
--- a/client/src/main/java/com/vaadin/client/ui/VMenuBar.java
+++ b/client/src/main/java/com/vaadin/client/ui/VMenuBar.java
@@ -220,7 +220,7 @@ public class VMenuBar extends SimpleFocusablePanel
      */
     public String buildItemHTML(UIDL item) {
         // Construct html from the text and the optional icon
-        StringBuffer itemHTML = new StringBuffer();
+        StringBuilder itemHTML = new StringBuilder();
         if (item.hasAttribute("separator")) {
             itemHTML.append("<span>---</span>");
         } else {
diff --git a/client/src/main/java/com/vaadin/client/ui/menubar/MenuBarConnector.java b/client/src/main/java/com/vaadin/client/ui/menubar/MenuBarConnector.java
index aa0ee3ab7b..69fe368768 100644
--- a/client/src/main/java/com/vaadin/client/ui/menubar/MenuBarConnector.java
+++ b/client/src/main/java/com/vaadin/client/ui/menubar/MenuBarConnector.java
@@ -73,7 +73,7 @@ public class MenuBarConnector extends AbstractComponentConnector
         if (null != getState()
                 && !ComponentStateUtil.isUndefinedWidth(getState())) {
             UIDL moreItemUIDL = options.getChildUIDL(0);
-            StringBuffer itemHTML = new StringBuffer();
+            StringBuilder itemHTML = new StringBuilder();
 
             if (moreItemUIDL.hasAttribute("icon")) {
                 Icon icon = client
diff --git a/client/src/main/java/com/vaadin/client/ui/popupview/PopupViewConnector.java b/client/src/main/java/com/vaadin/client/ui/popupview/PopupViewConnector.java
index 5e4fdb4d7d..07a1660965 100644
--- a/client/src/main/java/com/vaadin/client/ui/popupview/PopupViewConnector.java
+++ b/client/src/main/java/com/vaadin/client/ui/popupview/PopupViewConnector.java
@@ -102,7 +102,7 @@ public class PopupViewConnector extends AbstractHasComponentsConnector
             getWidget().preparePopup(getWidget().popup);
             getWidget().popup.setPopupConnector(getChildComponents().get(0));
 
-            final StringBuffer styleBuf = new StringBuffer();
+            final StringBuilder styleBuf = new StringBuilder();
             final String primaryName = getWidget().popup.getStylePrimaryName();
             styleBuf.append(primaryName);
 
diff --git a/client/src/main/java/com/vaadin/client/widgets/Grid.java b/client/src/main/java/com/vaadin/client/widgets/Grid.java
index 81f6756930..2b623804cf 100755
--- a/client/src/main/java/com/vaadin/client/widgets/Grid.java
+++ b/client/src/main/java/com/vaadin/client/widgets/Grid.java
@@ -4081,7 +4081,7 @@ public class Grid<T> extends ResizeComposite implements HasSelectionHandlers<T>,
         }
 
         private String createHTML(Column<?, T> column) {
-            final StringBuffer buf = new StringBuffer();
+            final StringBuilder buf = new StringBuilder();
             buf.append("<span class=\"");
             if (column.isHidden()) {
                 buf.append("v-off");