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Frequently Asked Questions about Rhino

How do I create a Java array from JavaScript?
You must use Java reflection. For instance, to create an array of java.lang.String of length five, do 
var stringArray = java.lang.reflect.Array.newInstance(java.lang.String, 5);

Then if you wish to assign the string "hi" to the first element, simply execute stringArray[0] = "hi".

Creating arrays of primitive types is slightly different: you must use the TYPE field. For example, creating an array of seven ints can be done with the code

var intArray = java.lang.reflect.Array.newInstance(java.lang.Integer.TYPE, 7);


When I try to execute a script I get the exception Required security context missing. What's going on?
You've likely missed placing the Security.properties file in your class path at org.mozilla.javascript.resources.