If the type of array must be determined at runtime, the following idiom
can also be used:

// arrayType is a class representing the type we want.
Object array = Array.newInstance(arrayType, 0); // Empty array

Array has another overloaded version that handles multiple array dimensions.

Thanks for the clarifications. I hope that my phrasing of the question
shows where I am stuck.

What I am intending to do is:

//here is how my program is flowing

String className = namesOfAllClasses[j]; //I have it coming through a
loop

Class class1 = Class.forName(className);

Fields fields = class1.getDeclaredFields(); //assuming that all fields
are Class type (not primitive)

for (int i=0; i < fields.length; i++) {
   Class newClass = Class.forName(fields[i].getType().getName()); //
create a class of the field type
   Object newObject = newClass.newInstance(); //create an object of
the new field type
   Method m = newClass.getMethod(methodName, newClass); /*get method;
we can assume it's "set"+fields[i].getName()*/
   Object arguments[] = {"dummy"};
   m.invoke(newObject, arguments);
}

/*
When a field is someClass[], I am facing troubles since now the
   fields[i].getType().getName() = L[some.pkg.name.someClass;
In this case:
   Class newClass = Class.forName(fields[i].getType().getName()) is
returning with a result (no exceptions)

But using the newInstance is generating exceptions since it's a
special-case class as you explained.

You have used
m.invoke(null, new String[0]); //it gave me back a
nullPointerRxception even though it's a static method

My problem is that the second parameter in invoke does not have to be
a String type for the parameter object but is an object instance of
the L[some.pkg.name.someClass; (object array)

Example: This method looks like this in ClassName.java

   public void setsomeObjectProperty(some.pkg.name.someClass[]
someObjectProperty) {
       this.someObjectProperty= someObjectProperty;
   }

Any tips?
*/

Thanks again for your time