Here I am taking class Employee:

package com.instanceofjava;
public class Employee {
 int id;
 String name;
 public Employee(int id, String name) {
  this.id=id;
  this.name=name;
 }
  public int getId() {
  return id;
 }
 public void setId(int id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
}

Here I am implementing Comparator:
class MyEmpComp implements Comparator<Employee >{

    @Override
    public int compare(Employee e1, Employee e2) {
        if(e1.getName() < e2.getName()){
            return 1;
        } else {
            return -1;
        }
    }

}




Here I am taking another class Main.Here I am adding objects to the My list
package com.oops;
import java.util.ArrayList;  
import java.util.Collections;
import java.util.Iterator;
import java.io.*;  
  
class Main{  
public static void main(String args[]){  
  
ArrayList al=new ArrayList();  
al.add(new Employee(101,"Indhu"));  
al.add(new Employee(106,"Sindhu"));  
al.add(new Employee(105,"Swathi"));  
  
Collections.sort(al,MyEmpComp );  
Iterator itr=al.iterator();  
while(itr.hasNext()){  
Employee st=(Employee)itr.next();  
System.out.println(st.id +" "+st.name );  
  }  
}  
}  



Output:
Indhu
Swathi
Sindhu



Instance Of Java

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