fork download 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. import java.util.ArrayList;
  8. import java.util.List;
  9. import java.util.Map;
  10.  
  11. import static java.util.stream.Collectors.groupingBy;
  12.  
  13. /* Name of the class has to be "Main" only if the class is public. */
  14. class Ideone
  15. {
  16.  
  17.     public static void main(String[] args) {
  18.         List<Employee> listEmployee = new ArrayList<>();
  19.         listEmployee.add(new Employee("Ravi", "IT", true));
  20.         listEmployee.add(new Employee("Tom", "Sales", false));
  21.         listEmployee.add(new Employee("Kanna", "IT", false));
  22.  
  23.         Map<String, List<Employee>> employeePerDep = listEmployee.stream().collect(groupingBy(Employee::getDepartement));
  24.         System.out.printf("%10s %10s %10s %10s\n", "Departement", "total", "active", "inactive");
  25.  
  26.         for (Map.Entry<String, List<Employee>> entry : employeePerDep.entrySet()) {
  27.             int total = entry.getValue().size();
  28.             long active = entry.getValue().stream().filter(Employee::isActive).count();
  29.             System.out.printf("%-10s %10d %10s %10s\n", entry.getKey(), total, active, total - active);
  30.         }
  31.     }
  32. }
  33.  
  34. class Employee {
  35.     private String name;
  36.     private String departement;
  37.     private boolean active;
  38.  
  39.     Employee(String name, String sector, boolean active) {
  40.         this.name = name;
  41.         this.departement = sector;
  42.         this.active = active;
  43.     }
  44.  
  45.     public String getName() {
  46.         return name;
  47.     }
  48.  
  49.     public void setName(String name) {
  50.         this.name = name;
  51.     }
  52.  
  53.     boolean isActive() {
  54.         return active;
  55.     }
  56.  
  57.     void setActive(boolean active) {
  58.         this.active = active;
  59.     }
  60.  
  61.     String getDepartement() {
  62.         return departement;
  63.     }
  64.  
  65.     void setDepartement(String departement) {
  66.         this.departement = departement;
  67.     }
  68. }
Success #stdin #stdout 0.09s 35072KB
comments (?)
stdin 
Standard input is empty
stdout 
Departement      total     active   inactive
Sales               1          0          1
IT                  2          1          1
https://ideone.com/Df4nop
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!