Array Reflection: create instance

   
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import java.lang.reflect.Array;

public class SampleCreateArrayReflection {

  public static void main(String[] args) {
    int[] originalArray = { 55, 66 };
    int[] biggerArray = (int[]) doubleArray(originalArray);
    System.out.println("originalArray:");
    for (int k = 0; k < Array.getLength(originalArray); k++)
      System.out.println(originalArray[k]);
    System.out.println("biggerArray:");
    for (int k = 0; k < Array.getLength(biggerArray); k++)
      System.out.println(biggerArray[k]);
  }

  static Object doubleArray(Object source) {
    int sourceLength = Array.getLength(source);
    Class arrayClass = source.getClass();
    Class componentClass = arrayClass.getComponentType();
    Object result = Array.newInstance(componentClass, sourceLength * 2);
    System.arraycopy(source, 0, result, 0, sourceLength);
    return result;
  }
}

1.	Creating an Array: An array of 10 ints.
2.	Creating an Array: An array of 10 int-arrays.
3.	Creating an Array: A 10x20 2-dimensional int array.
4.	Getting and Setting the Value of an Element in an Array Object
5.	Array Reflection: name and type
6.	Array Reflection: getComponentType()
7.	Array Reflection: get length
8.	Array Reflection: Multi Array Reflection
9.	Using reflection to check array type and length
10.	Using reflection to create, fill, and display an array
11.	Getting the Length and Dimensions of an Array Object
12.	Determining If an Object Is an Array
13.	Getting the Component Type of an Array Object
14.	Check if the given object is an array (primitve or native).
15.	return an Object array for the given object.
16.	This program demonstrates the use of reflection for manipulating arrays

Array Reflection: create instance : Array Reflection « Reflection « Java

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