From 7fd440d2448587f7e9958e84c84ec2bfd30ba8a0 Mon Sep 17 00:00:00 2001
From: Ahmed Ashour <asashour@yahoo.com>
Date: Thu, 28 Sep 2017 07:45:09 +0200
Subject: Use single character for StringBuilder.append (#10102)

---
 .../java/com/vaadin/client/extensions/ResponsiveConnector.java    | 8 ++++----
 client/src/main/java/com/vaadin/client/ui/VEmbedded.java          | 4 ++--
 client/src/main/java/com/vaadin/client/ui/VFlash.java             | 4 ++--
 .../java/com/vaadin/client/ui/popupview/PopupViewConnector.java   | 8 ++++----
 4 files changed, 12 insertions(+), 12 deletions(-)

(limited to 'client/src')

diff --git a/client/src/main/java/com/vaadin/client/extensions/ResponsiveConnector.java b/client/src/main/java/com/vaadin/client/extensions/ResponsiveConnector.java
index f18ecb0711..17b37da617 100644
--- a/client/src/main/java/com/vaadin/client/extensions/ResponsiveConnector.java
+++ b/client/src/main/java/com/vaadin/client/extensions/ResponsiveConnector.java
@@ -104,17 +104,17 @@ public class ResponsiveConnector extends AbstractExtensionConnector
     protected String constructSelectorsForTarget() {
         String primaryStyle = target.getState().primaryStyleName;
         StringBuilder selectors = new StringBuilder();
-        selectors.append(".").append(primaryStyle);
+        selectors.append('.').append(primaryStyle);
 
         if (target.getState().styles != null
                 && target.getState().styles.size() > 0) {
             for (String style : target.getState().styles) {
                 selectors.append(",.").append(style);
-                selectors.append(",.").append(primaryStyle).append(".")
+                selectors.append(",.").append(primaryStyle).append('.')
                         .append(style);
-                selectors.append(",.").append(style).append(".")
+                selectors.append(",.").append(style).append('.')
                         .append(primaryStyle);
-                selectors.append(",.").append(primaryStyle).append("-")
+                selectors.append(",.").append(primaryStyle).append('-')
                         .append(style);
             }
         }
diff --git a/client/src/main/java/com/vaadin/client/ui/VEmbedded.java b/client/src/main/java/com/vaadin/client/ui/VEmbedded.java
index 5f4e801a44..54f3fdcf4e 100644
--- a/client/src/main/java/com/vaadin/client/ui/VEmbedded.java
+++ b/client/src/main/java/com/vaadin/client/ui/VEmbedded.java
@@ -138,7 +138,7 @@ public class VEmbedded extends HTML {
         }
 
         // End object tag
-        html.append(">");
+        html.append('>');
 
         // Ensure we have an movie parameter
         Map<String, String> parameters = state.parameters;
@@ -166,7 +166,7 @@ public class VEmbedded extends HTML {
         // Add the parameters to the Embed
         for (String name : parameters.keySet()) {
             html.append(WidgetUtil.escapeAttribute(name));
-            html.append("=");
+            html.append('=');
             html.append("\"" + WidgetUtil.escapeAttribute(parameters.get(name))
                     + "\"");
         }
diff --git a/client/src/main/java/com/vaadin/client/ui/VFlash.java b/client/src/main/java/com/vaadin/client/ui/VFlash.java
index 6c45cf52ac..40f089428d 100644
--- a/client/src/main/java/com/vaadin/client/ui/VFlash.java
+++ b/client/src/main/java/com/vaadin/client/ui/VFlash.java
@@ -225,7 +225,7 @@ public class VFlash extends HTML {
         }
 
         // End object tag
-        html.append(">");
+        html.append('>');
 
         // Ensure we have an movie parameter
         if (embedParams.get("movie") == null) {
@@ -263,7 +263,7 @@ public class VFlash extends HTML {
         // Add the parameters to the Embed
         for (String name : embedParams.keySet()) {
             html.append(WidgetUtil.escapeAttribute(name));
-            html.append("=");
+            html.append('=');
             html.append("\"" + WidgetUtil.escapeAttribute(embedParams.get(name))
                     + "\"");
         }
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 f0b42f76d9..5e4fdb4d7d 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
@@ -111,17 +111,17 @@ public class PopupViewConnector extends AbstractHasComponentsConnector
                     .contains(VOverlay.ADDITIONAL_CLASSNAME_ANIMATE_IN);
 
             if (isAnimatingIn) {
-                styleBuf.append(" ");
+                styleBuf.append(' ');
                 styleBuf.append(primaryName);
-                styleBuf.append("-");
+                styleBuf.append('-');
                 styleBuf.append(VOverlay.ADDITIONAL_CLASSNAME_ANIMATE_IN);
             }
 
             if (ComponentStateUtil.hasStyles(getState())) {
                 for (String style : getState().styles) {
-                    styleBuf.append(" ");
+                    styleBuf.append(' ');
                     styleBuf.append(primaryName);
-                    styleBuf.append("-");
+                    styleBuf.append('-');
                     styleBuf.append(style);
                 }
             }
-- 
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