diff -r d65b3a2fbfaf -r a0505844750a emul/src/main/java/java/lang/Double.java
--- a/emul/src/main/java/java/lang/Double.java	Sun Sep 30 18:29:37 2012 -0700
+++ b/emul/src/main/java/java/lang/Double.java	Tue Oct 16 18:04:11 2012 +0200
@@ -25,6 +25,8 @@
 
 package java.lang;
 
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+
 /**
  * The {@code Double} class wraps a value of the primitive type
  * {@code double} in an object. An object of type
@@ -188,6 +190,7 @@
      * @param   d   the {@code double} to be converted.
      * @return a string representation of the argument.
      */
+    @JavaScriptBody(args="d", body="return d.toString();")
     public static String toString(double d) {
         throw new UnsupportedOperationException();
     }
@@ -497,6 +500,7 @@
      * @throws     NumberFormatException  if the string does not contain a
      *             parsable number.
      */
+    @JavaScriptBody(args="s", body="return parseFloat(s);")
     public static Double valueOf(String s) throws NumberFormatException {
         throw new UnsupportedOperationException();
 //        return new Double(FloatingDecimal.readJavaFormatString(s).doubleValue());
@@ -534,6 +538,7 @@
      * @see    java.lang.Double#valueOf(String)
      * @since 1.2
      */
+    @JavaScriptBody(args="s", body="return parseFloat(s);")
     public static double parseDouble(String s) throws NumberFormatException {
         throw new UnsupportedOperationException();
 //        return FloatingDecimal.readJavaFormatString(s).doubleValue();