1 package com.example.lambda;
 2 
 3 import java.util.HashMap;
 4 import java.util.List;
 5 import java.util.Map;
 6 import java.util.stream.Collectors;
 7 
 8 /**
 9  *
10  * @author oracle
11  */
12 public class A15CollectCount {
13     
14     public static void main(String[] args) {
15         
16         List<Employee> eList = Employee.createShortList();
17         
18         Map<String, Long> gMap = new HashMap<>();
19        
20         // Collect CO Executives
21         gMap = eList.stream()
22             .collect(
23                 Collectors.groupingBy(
24                     e -> e.getDept(), Collectors.counting()));        
25 
26         System.out.println("\n== Employees by Dept ==");
27         gMap.forEach((k,v) -> 
28             System.out.println("Dept: " + k + " Count: " + v)
29         );
30                 
31     }
32     
33 }
34