How to get the first non-null value in Java?
- by froadie
Is there a Java equivalent of SQL's COALESCE function? That is, is there any way to return the first non-null value of several variables?
e.g.
Double a = null;
Double b = 4.4;
Double c = null;
I want to somehow have a statement that will return the first non-null value of a, b, and c - in this case, it would return b, or 4.4. (Something like the sql method - return COALESCE(a,b,c)). I know that I can do it explicitly with something like:
return a != null ? a : (b != null ? b : c)
But I wondered if there was any built-in, accepted function to accomplish this.
