When using generic Lists, I get compiler warnings. If I want to have a generic
return type, which of the following two options should be done? (Note the use
of a cast in the second option.)
Also, what's the disadvantage to not using @SuppressWarnings? It seems like
it's optional...
@DataModel
| @SuppressWarnings("unchecked")
| public List<Something> getSomethings() {
| return myQuery.getResultList();
| }
Without @SuppressWarnings, the above gives the warning:
Type safety: The expression of type List needs unchecked conversion to
conform to List<Something>
@DataModel
| @SuppressWarnings("unchecked")
| public List<Something> getSomethings() {
| return (List<Something>) myQuery.getResultList();
| }
Without @SuppressWarnings, the above gives the warning:
Type safety: The cast from List to List<Something> is actually checking
against the erased type List
Why is this error showing up in the second case. If I'm casting, shouldn't I be
able to leave off @SuppressWarnings with no problem?
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