Solution to compiler warning for generic varargs
- by TJR
A puzzle from this blog. Similar to SO1445233.
Given the following source listing, explain why the compiler is producing a warning at invocation to the list method and give a solution for removing the warning without resorting to @SuppressWarnings annotation.
public class JavaLanguagePuzzle3 {
public static void main(String[] args) {
list("1", 2, new BigDecimal("3.5"));
}
private static <T> List<T> list(T... items) {
return Arrays.asList(items);
}
}
Warning:
Type safety: A generic array of Object&Serializable&Comparable<?> is created for a varargs parameter
