Should I always use generics?

Question

I created a unit test :

new Callable() {
@Override
public Object call() throws
         .....

I have received warning in Eclipse:

Callable is a raw type. References to generic type Callable<V> 
should be parameterized

Should I write code like:

new Callable<Object>()  

for eliminating warning, or not? It seems only junit test and there is no sense to add additional code... Thanks.

Answer 1

Yes, it's a good practice to avoid raw types and use generic types. Using Callable<Object> makes it clear that the Callable is intended to return any kind of Object. Using Callable doesn't make that clear.