Q. How do I create a Java array from JavaScript?
A. 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);
Q. When I try to execute a script
I get the exception Required security context missing.
What's going on?
A. You've likely missed placing the Security.properties file in your class path at org.mozilla.javascript.resources.