Weird ClassCastException

[A. Sundararajan]

No, it is hard to debug the cast issue without access to code.

You may get this sort of cast issue when calling a Java method from 
script code. Only possible remedy is to try to call 'exact' method - to 
make sure right overload is selected.

java.lang.System.out["println(Object)"]('hello'); // choose exact 
overload of println method.

Also, please make sure values passed from script are of either exact 
type or convertible automatically to the types required.

-Sundar

On Tuesday 05 November 2013 12:19 PM, Tal Liron wrote:
> A recent Nashorn commit introduced some rather bizarre exceptions. 
> Here's how they look:
>
> java.lang.ClassCastException: 
> com.threecrickets.scripturian.adapter.NashornAdapter cannot be cast to 
> java.lang.Number
>     at 
> sun.invoke.util.ValueConversions.primitiveConversion(ValueConversions.java:199)
>     at 
> sun.invoke.util.ValueConversions.unboxBoolean(ValueConversions.java:95)
>     at 
> jdk.nashorn.internal.scripts.Script$index_s_html.runScript(dispatched/index.s.html:1)
>     at 
> jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:498)
>     at 
> jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:207)
>     at 
> jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:378)
>
> I realize it's hard to debug without the full loop... but perhaps the 
> stack trace suggests something to you?