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