I've one more scenario related to passing of datatypes from java > JS then again getting them back from JS > Java. Link given below
Build Tried : Promoted 6u2 JRE build
OS : Windows XP
Problem:
Datayypes are not getting exchanged properly on IE browser but it works fine on firefox and mozilla.
- long, float are getting retrieved as java.lang.Double
- char,short,byte are getting converted into java.lang.Integer.
Interesting thing about char is that on IE, Javascript is recieving it as
- char MIN_VALUE as "0"
- char MAX_VALUE as "65535"
Passing an array from JS > Java or Java > JS is not possible at all on IE. It simply throws following exception :
java.lang.Exception: setStringArray{0} :no such method exists
at sun.plugin.com.JavaClass.getMethod1(Unknown Source)
at sun.plugin.com.JavaClass.getDispatcher(Unknown Source)
at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
java.lang.Exception: java.lang.Exception: setStringArray{0} :no such method exists
at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin.com.DispatchImpl.invoke(Unknown Source)

Bug is also reproducible with 1.4.2_15 and 1.5.0_12

1) For array related issue try to run any of the following htmls inside IE browser:
Test HTML:
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_UR_int_ws/deployment/src/plugin/LiveConnect/LiveConnect/html/SimpleJavaJSJava.html
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_UR_int_ws/deployment/src/plugin/LiveConnect/LiveConnect/html/Public_array_method.html
If you notice the above mentioned exception then bug is reporduced

Java Sources:
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_UR_int_ws/deployment/src/plugin/LiveConnect/LiveConnect/src/SimpleJavaJSJava.java

2) For other data types issues try to run following html inside IE browser
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_UR_int_ws/deployment/src/plugin/LiveConnect/LiveConnect/html/win32/JavaToJSDataTypesApp.html
Java source:
http://sqeweb.sfbay.sun.com/deployment2/jitu/deployment_mustang_UR_int_ws/deployment/src/plugin/LiveConnect/LiveConnect/html/win32/JavaToJSDataTypes.java

The issues should either be FIXED or documented if not possible to fix