diff -r 5c1604c5ca9a -r fbf8eb98a8ef javaquery/demo-calculator/src/main/java/org/apidesign/bck2brwsr/mavenhtml/App.java
--- a/javaquery/demo-calculator/src/main/java/org/apidesign/bck2brwsr/mavenhtml/App.java	Thu Nov 22 10:38:38 2012 +0100
+++ b/javaquery/demo-calculator/src/main/java/org/apidesign/bck2brwsr/mavenhtml/App.java	Mon Dec 10 11:26:32 2012 +0100
@@ -70,6 +70,10 @@
     private static void setValue(double v) {
         StringBuilder sb = new StringBuilder();
         sb.append(v);
+        if (sb.toString().endsWith(".0")) {
+            final int l = sb.length();
+            sb.delete(l - 2, l);
+        }
         Calculator.DISPLAY.setValue(sb.toString());
     }