Building Arrays Using Reflection

package example.array;
 
import java.lang.reflect.Array;
import java.util.Random;
 
public class ArrayCreate {
    public static void main(String args[]) {
	Object array = Array.newInstance(int.class, 3);
	printType(array);
	fillArray(array);
	displayArray(array);
    }
 
    private static void printType(Object object) {
	Class type = object.getClass();
	if (type.isArray()) {
	    Class elementType = type.getComponentType();
	    System.out.println("Array of: " + elementType);
	    System.out.println("Array size: " + Array.getLength(object));
	}
    }
 
    private static void fillArray(Object array) {
	int length = Array.getLength(array);
	Random generator = new Random(System.currentTimeMillis());
	for (int i = 0; i < length; i++) {
	    int random = generator.nextInt();
	    Array.setInt(array, i, random);
	}
    }
 
    private static void displayArray(Object array) {
	int length = Array.getLength(array);
	for (int i = 0; i < length; i++) {
	    int value = Array.getInt(array, i);
	    System.out.println("Position: " + i + ", value: " + value);
	}
    }
}