diff -r 06bd18f34608 -r 19497b4312bb emul/src/main/java/java/lang/AbstractStringBuilder.java
--- a/emul/src/main/java/java/lang/AbstractStringBuilder.java	Sun Sep 30 17:10:32 2012 -0700
+++ b/emul/src/main/java/java/lang/AbstractStringBuilder.java	Tue Oct 09 11:11:58 2012 -0700
@@ -25,6 +25,8 @@
 
 package java.lang;
 
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+
 /**
  * A mutable sequence of characters.
  * <p>
@@ -598,6 +600,10 @@
      * @param   i   an {@code int}.
      * @return  a reference to this object.
      */
+    @JavaScriptBody(
+        args={ "self", "i" },
+        body="return java_lang_AbstractStringBuilder_appendLjava_lang_AbstractStringBuilderLjava_lang_String(self,i.toString());"
+    )
     public AbstractStringBuilder append(int i) {
         if (i == Integer.MIN_VALUE) {
             append("-2147483648");