Collections(Java)-Comparator example program

Employees.java

 import java.util.ArrayList;  
 import java.util.Collections;  
 import java.util.Iterator;  
 public class Employees {  
      String name;  
      int id;  
      //setters  
      public void setName(String name){  
           this.name=name;  
      }  
      public void setId(int id){  
           this.id=id;  
      }  
      //getters  
      public String getName(){  
           return name;  
      }  
      public int getId(){  
           return id;  
      }  
      //constructor  
      public Employees(String name,int id){  
           this.name=name;  
           this.id=id;  
      }  
      public static void main(String [] args){  
           Employees e1=new Employees("xyz",37);  
           Employees e2=new Employees("abc",38);  
           Employees e3=new Employees("sst",39);  
           ArrayList<Employees> arrayList=new ArrayList<Employees>();  
           arrayList.add(e1);  
           arrayList.add(e2);  
           arrayList.add(e3);  
           Collections.sort(arrayList,new EmployeesSortByName());  
           Iterator<Employees> itr=arrayList.iterator();  
           while(itr.hasNext()){  
                Employees em=(Employees)itr.next();  
                System.out.println(em.getName()+" "+em.getId());  
           }  
      }  
 }  

EmployeesSortByName.java

 import java.util.Comparator;  
 public class EmployeesSortByName implements Comparator<Employees> {  
      @Override  
      public int compare(Employees arg1, Employees arg2) {  
           // TODO Auto-generated method stub  
           return arg1.getName().compareTo(arg2.getName());  
      }  
 }  

Output:

abc 38
sst 39
xyz 37