Object array query

[bugger]

I have an object array called objectArray:

Code:

Object[] objectArray = new Object[5];

I want it to only store objects of child classes of my custom class "TagIt".

Is this possible to do this using Generics?

Thanks for your time.

[roots]

It's simple forward thing if you only want TagIt then do something like this ..

Code:

TagIt tagItArray = new TagIt[5] ;

There is nothing Generics associated with it.

[bugger]

Thanks but I want it to only store objects of child classes of my custom class "TagIt". Which means:

TAGIt has 3 classes that inherit from TAGIt. I want to store the objects of these classes in the array.

[jelly]

The answer that Roots gave will do exactly that for you. The declaration they gave means that only objects of type TagIt or any of its subclasses will be allowed to be put in the array. Attempts to put any other type in it will fail.

[tim]

Hello bugger.

If you make TagIt an abstract class, then you cannot put an instance of that class into your array - only its non-abstract sub classes.

Quote:

Originally Posted by bugger

Thanks but I want it to only store objects of child classes of my custom class "TagIt".

It does the same as what jelly and roots suggested, but it will exclude TagIt.

Hope this helped.

[roots]

Tim is right,

Other option will be using ArrayList + Generics

Code:

		ArrayList<? extends TagIt> apple = new ArrayList<TagIt>();
		apple.add(new TagIt()); // Fails as only subclasses are accepted