1z0-819 Exam - Question 117

To create a map that contains the employee with the highest salary for each neighborhood, the correct code fragment should use the Collectors.groupingBy method to group employees by neighborhood, and within each group, collect the employee with the highest salary. The Collectors.groupingBy method creates a map where the key is the neighborhood and the value is the optional employee who has the maximum salary within that neighborhood. This is done using Collectors.maxBy with a Comparator that compares employees by salary. Option A correctly implements this logic.