Using Java in Scripting Languages - Scripting in Java: Integrating with Groovy and JavaScript - page 196

Nashorn supports a new syntax to create Java arrays. First, create the appropriate
Java array type using the Java.type() method, and then use the familiar new operator
to create the array. The following snippet of code shows how to create a String[] of two
elements in Nashorn:
// Get the java.lang.String[] type
var StringArray = Java.type("java.lang.String[]");
// Create a String[] array of 2 elements
var strArray = new StringArray(2);
strArray[0] = "Hello";
strArray[1] = "Array";
for(var i = 0; i < strArray.length; i++) {
print(strArray[i]);
}
Hello
Array
Nashorn supports creating the arrays of primitive types the same way. The following
snippet of code creates an int[] of two elements in Nashorn:
// Get the int[] type
var IntArray = Java.type("int[]");
// Create a int[] array of 2 elements
var intArray = new IntArray(2);
intArray[0] = 100;
intArray[1] = 200;
for(var i = 0; i < intArray.length; i++) {
print(intArray[i]);
}
100
200
I will discuss working with Java and JavaScript arrays in Chapter 7 in details.