How to remove all null elements from a ArrayList or String Array?

Question

I try with a loop like that

// ArrayList tourists

for (Tourist t : tourists) {

    if (t != null) {     

        t.setId(idForm); 

    }   

}

But it isn't nice. Can anyone suggest me a better solution?

Some useful benchmarks to make better decision:

While loop, For loop and Iterator Performance Test

Answer 1

If you prefer immutable data objects, or if you just dont want to be destructive to the input list, you can use Guava's predicates.

ImmutableList.copyOf(Iterables.filter(tourists, Predicates.notNull())