Sorting ArrayList with custom fields by Id, Name , City , Age using Comparator Interface in java

package TestCollection;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.Iterator;

import java.util.List;

import java.util.Scanner;

class SetData{

  public Integer id;

  private String name;

  private String city;

  private Integer age;

  

  public SetData (Integer id, String name, String city, Integer age) {

this.id = id;

this.name = name;

this.city = city;

this.age = age;

}

  

public Integer getId() {

return id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getCity() {

return city;

}

public void setCity(String nity) {

this.city = city;

}

public Integer getAge() {

return age;

}

public void setAge(Integer age) {

this.age = age;

}

public String toString(){

return "[" + " ID: " + this.getId() + " Name: "+ this.getName() + " City: " + this.getCity() + " Age: " + this.getAge() +"]";

}

}

class Sample2{

public static void main(String args[]){

   new Sample2();

Scanner scan  = new Scanner(System.in);

SetData setdata1 = new SetData(101,"Aman","Noida",28);

SetData setdata2 = new SetData(119,"Vijay","Delhi",25);

SetData setdata5 = new SetData(204,"chetan","Noida",28);

SetData setdata3 = new SetData(601,"Rajesh","Ghaziabad",27);

SetData setdata4 = new SetData(701,"Brijesh","Noida",26);

List <SetData> l1 = new ArrayList <SetData>();

List  l2 = new ArrayList();

l1.add(setdata1);

l1.add(setdata2);

l1.add(setdata3);

l1.add(setdata4);

l1.add(setdata5);

//l2.add(l1);

         

Iterator itr = l1.iterator();

while(itr.hasNext()){

Object o = itr.next();

//System.out.println(o);

}

Collections.sort(l1,new MyIdComparable1());

itr = l1.iterator();

System.out.println("------------------Sort By ID----------------------");

while(itr.hasNext()){

Object o = itr.next();

System.out.println(o);

}

Collections.sort(l1,new MyNameComparable2());

System.out.println("------------------Sort By Name----------------------");

for(Object name : l1){

System.out.println(name);

}

Collections.sort(l1,new MyCityComparable3());

System.out.println("------------------Sort By City----------------------");

for(Object city : l1){

System.out.println(city);

}

Collections.sort(l1,new MyAgeComparable4());

System.out.println("------------------Sort By Age----------------------");

for(Object age : l1){

System.out.println(age);

}

}

}

class MyIdComparable1 implements Comparator <SetData>{

public int compare(SetData s1, SetData s2){

return (s1.getId()<s2.getId() ? -1 : (s1.getId()==s2.getId() ? 0 : 1));

} 

}

class MyNameComparable2 implements Comparator <SetData>{

public int compare(SetData s1, SetData s2){

return (s1.getName().compareToIgnoreCase(s2.getName()));

} 

}

class MyCityComparable3 implements Comparator <SetData>{

public int compare(SetData s1, SetData s2){

return (s1.getCity().compareToIgnoreCase(s2.getCity()));

} 

}

class MyAgeComparable4 implements Comparator <SetData>{

public int compare(SetData s1, SetData s2){

return (s1.getAge()<s2.getAge() ? -1 : (s1.getAge()==s2.getAge() ? 0 : 1));

} 

}

// Out Put :