guys i thought almost all language including java pass array into function as reference (modifiable)

but somehow it does not work here. and the testArray is still 1,2,3 with size of 3

strange enough, when if i change result[i] = 2 to a[1] =2; it work . it did pass by reference

what is wrong with this code?

at the end, i had a = result; (which update the a). did result get removed from stack. that is why a still get to the original a ?

i am confused.

thanks

class Test
{
   public static void main(String[] args)
   {

      int[] testArray = {1,2,3};
      equalize(testArray, 6);

      System.out.println("test Array size :" + testArray.length);
      for(int i = 0; i < testArray.length; i++)
         System.out.println(testArray[i]);
   }

   public static void equalize(int[] a, int biggerSize)
   {
      if(a.length > biggerSize)
         throw new Error("Array size bigger than biggerSize");

      int[] result = new int[biggerSize];
     // System.arraycopy(a, 0, result, 0, a.length);
     // int array default value should be 0
      for(int i = 0; i < biggerSize; i++)
         result[i] = 2;

      a = result;
   }
}