diff -r 50da9ad3365a -r 62b289bb87c7 rt/emul/mini/src/main/java/java/lang/Double.java
--- a/rt/emul/mini/src/main/java/java/lang/Double.java	Sun May 17 13:11:31 2015 +0200
+++ b/rt/emul/mini/src/main/java/java/lang/Double.java	Tue Jul 07 07:46:52 2015 +0200
@@ -538,10 +538,15 @@
      * @see    java.lang.Double#valueOf(String)
      * @since 1.2
      */
+    public static double parseDouble(String s) throws NumberFormatException {
+        double ret = parseDouble0(s);
+        if (isNaN(ret)) {
+            throw new NumberFormatException("For input string: \"" + s + '\"');
+        }
+        return ret;
+    }
     @JavaScriptBody(args="s", body="return parseFloat(s);")
-    public static double parseDouble(String s) throws NumberFormatException {
-        return 0;
-    }
+    private static native double parseDouble0(String s) throws NumberFormatException;
 
     /**
      * Returns {@code true} if the specified number is a