Objects.nonNull()
David M. Lloyd
david.lloyd at redhat.com
Thu Jan 13 20:21:02 UTC 2011
On 01/13/2011 02:06 PM, Brian Goetz wrote:
> I propose to change these to be called checkNonNull(), so their
> null-checking behavior is obvious to readers of code
I agree with this, but...
> and to leave room
> to LATER provide methods like
>
> public static<T> T nonNull(T[] obj) {
> return (obj == null) ? (T[]) ZERO_LENGTH_ARRAY : obj;
> }
I assume you meant:
public static<T> T[] nonNull(T[] obj) { ...
This probably won't fly because ZERO_LENGTH_ARRAY can only be an
Object[], so this method would have to return Object[] else you'll get CCEs.
> and
> public static<T> T nonNull(String obj) {
> return (obj == null) ? "" : obj;
> }
> etc.
I don't know, this doesn't feel right to me. It would probably make
more sense to have a:
public static <T> T defaulted(T test, T defVal) {
return test == null ? defVal : test;
}
This would cover both of the above cases and more.
--
- DML
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