Commiting Hannes Wallnoefer patch to allow LiveConnect to convert JS Date to Java Data, see http://bugzilla.mozilla.org/show_bug.cgi?id=201326

js/rhino/src/org/mozilla/javascript/NativeDate.java

@@ -79,6 +79,10 @@ final class NativeDate extends IdScriptable {
         return super.getDefaultValue(typeHint);
     }
 
+    double getJSTimeValue() {
+        return date;
+    }
+
     protected void fillConstructorProperties
         (Context cx, IdFunction ctor, boolean sealed)
     {

js/rhino/src/org/mozilla/javascript/NativeJavaObject.java

@@ -43,6 +43,7 @@ import java.io.*;
 import java.lang.reflect.*;
 import java.util.Hashtable;
 import java.util.Enumeration;
+import java.util.Date;
 
 /**
  * This class reflects non-Array Java objects into the JavaScript environment.  It
@@ -372,11 +373,13 @@ WrapFactory#wrap(Context cx, Scriptable scope, Object obj, Class)}
 
         case JSTYPE_OBJECT:
             // Other objects takes #1-#3 spots
-            if (fromObj instanceof NativeArray && to.isArray()) {
-                // This is a native array conversion to a java array
-                // Array conversions are all equal, and preferable to object
-                // and string conversion, per LC3.
-                result = 1;
+            if (to.isArray()) {
+                if (fromObj instanceof NativeArray) {
+                    // This is a native array conversion to a java array
+                    // Array conversions are all equal, and preferable to object
+                    // and string conversion, per LC3.
+                    result = 1;
+                }
             }
             else if (to == ScriptRuntime.ObjectClass) {
                 result = 2;
@@ -384,6 +387,12 @@ WrapFactory#wrap(Context cx, Scriptable scope, Object obj, Class)}
             else if (to == ScriptRuntime.StringClass) {
                 result = 3;
             }
+            else if (to == ScriptRuntime.DateClass) {
+                if (fromObj instanceof NativeDate) {
+                    // This is a native date to java date conversion
+                    result = 1;
+                }
+            }
             else if (to.isPrimitive() || to != Boolean.TYPE) {
                 result = 3 + NativeJavaObject.getSizeRank(to);
             }
@@ -624,6 +633,13 @@ WrapFactory#wrap(Context cx, Scriptable scope, Object obj, Class)}
             else if (type.isInstance(value)) {
                 return value;
             }
+            else if (type == ScriptRuntime.DateClass
+                     && value instanceof NativeDate)
+            {
+                double time = ((NativeDate)value).getJSTimeValue();
+                // XXX: This will replace NaN by 0
+                return new Date((long)time);
+            }
             else if (type.isArray() && value instanceof NativeArray) {
                 // Make a new java array, and coerce the JS array components
                 // to the target (component) type.

js/rhino/src/org/mozilla/javascript/ScriptRuntime.java

@@ -82,6 +82,7 @@ public class ScriptRuntime {
     public final static Class FunctionClass = Function.class;
     public final static Class ClassClass = Class.class;
     public final static Class SerializableClass = java.io.Serializable.class;
+    public final static Class DateClass = java.util.Date.class;
 
     // Can not use .class as Comparable is only since JDK 1.2
     public final static Class