Collection.addAll()
and Map.putAll()
calls immediately after instantiation of a collection using the no-arg constructor.
Such constructs can be replaced with a single call to a parametrized constructor, which simplifies code. Also, for some collections the replacement might be more performant.
Example:
Set<String> set = new HashSet<>();
set.addAll(Arrays.asList("alpha", "beta", "gamma"));
Can be replaced with:
Set<String> set = new HashSet<>(Arrays.asList("alpha", "beta", "gamma"));
Standard JDK collection classes are supported by default. Additionally, you can specify other classes in the inspection options.