1 package com.example.lambda;
 2 
 3 import java.util.ArrayList;
 4 import java.util.Comparator;
 5 import java.util.List;
 6 import java.util.stream.Collectors;
 7 
 8 /**
 9  *
10  * @author oracle
11  */
12 public class A12CollectMath {
13     
14     public static void main(String[] args) {
15         
16         List<Employee> eList = Employee.createShortList();
17        
18         // Collect CO Executives
19         double avgSalary = eList.stream()
20             .filter(e -> e.getRole().equals(Role.EXECUTIVE))
21             .filter(e -> e.getState().equals("CO"))
22             .collect(
23                 Collectors.averagingDouble(Employee::getSalary));        
24 
25         System.out.println("\n== CO Exec Avg Salary ==");
26         System.out.printf("Average: $%,9.2f %n", avgSalary);        
27                 
28     }
29     
30 }
31