Question

I have a method that returns the reference to the array of object, and I need to get the count of the items in the array. Is it possible ?
The snippt of the method is as follow:

public Object getAllDChannelId()
{
  Object[] items = getAllItems();
  Object[] ids = new Object[items.length];
  for (int i = 0; i < items.length; i++)
    ids[i] = items[i].getId();
  return ids;
}

Now I am trying to get the count of items returend through getAllDChannelId(). How to get that ?

edit: I don’t want(actually can not) change the signature of the method getAllDChannelId().

Answer 1

enter code hereChange the return type of the function

public Object[] getAllDChannelId()
{
  Object[] items = getAllItems();
  Object[] ids = new Object[items.length];
  for (int i = 0; i < items.length; i++)
    ids[i] = items[i].getId();
  return ids;
}

At the calling environment

Object[] returnObj = getAllDChannelId();
System.out.println("Length: "+returnObj.length);

Updated
If for some cases you just need reference then do this when you need array of objects

Object[] returnObj = (Object[])getAllDChannelId();
System.out.println("Length: "+returnObj.length);