import java.util.Arrays;
import java.util.Comparator;
class Employee{
String name;
String id;
public Employee() {}
public Employee(String name, String id) {
this.name = name;
this.id = id;
}
@Override
public String toString() {
return "Employee{" + "name=" + name + ", id=" + id + '}';
}
}
class ComparatorName implements Comparator<Employee>
{
@Override
public int compare(Employee obj1, Employee obj2) {
//sort Employee on basis of name(ascending order)
return obj1.name.compareTo(obj2.name);
}
}
class ComparatorId implements Comparator<Employee>{
@Override
public int compare(Employee obj1, Employee obj2) {
//sort Employee on basis of id(ascending order)
return obj1.id.compareTo(obj2.id);
}
}
/**
* @author AnkitMittal
* Copyright (c), AnkitMittal JavaMadeSoEasy.com
* Main class
*/
public class ArraysSort {
public static void main(String[] args) {
Employee emp1 = new Employee("sam", "4");
Employee emp2 = new Employee("amy", "2");
Employee emp3 = new Employee("brad", "1");
Employee employeeArray[] = { emp1, emp2, emp3 };
System.out.print(" employeeArray Before sorting : \n");
for (Employee emp : employeeArray) {
System.out.print(emp + " ");
}
Arrays.sort(employeeArray, new ComparatorName());
System.out.println("\n\n employeeArray after sorting on basis of "
+ "name(ascending order) : ");
for (Employee emp : employeeArray) {
System.out.print(emp + " ");
}
Arrays.sort(employeeArray, new ComparatorId());
System.out.println("\n\n employeeArray after sorting on basis of "
+ "id(ascending order) : ");
for (Employee emp : employeeArray) {
System.out.print(emp + " ");
}
}
}
/*OUTPUT
employeeArray Before sorting :
[Employee{name=sam, id=4}, Employee{name=amy, id=2}, Employee{name=brad, id=1}]
employeeArray after sorting on basis of name(ascending order) :
[Employee{name=amy, id=2}, Employee{name=brad, id=1}, Employee{name=sam, id=4}]
employeeArray after sorting on basis of id(ascending order) :
[Employee{name=brad, id=1}, Employee{name=amy, id=2}, Employee{name=sam, id=4}]
*/
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Program to sort Employee array using Arrays.sort in ascending order on basis of name and id by implementing Comparator interface
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