HashSet contains duplicate entries in java

There are HashSet contains duplicate entries due to following reason :-

Here we are created User defined Employee object, for every object there are generated different hashcode so we put this hashcode in different buckets.
HashSet does not overridden the equals and hashCode methods,if you want remove duplicate object then we need to implement hashcode and equals method in Employee class.

equals() method :- public boolean equals (Object obj)
HashCode() Method :- public int hashCode()

				
					import java.util.HashSet;
import java.util.Set;

class Employee {

	private String name;

	Employee(String name) {
		this.name = name;
	}
    public String toString() {
		return name;
	}
}

public class DuplicateSet {
	public static void main(String[] args) {
		Set<Employee> hs = new HashSet<Employee>();
		hs.add(new Employee("Vinay"));
		hs.add(new Employee("Pankaj"));
		hs.add(new Employee("Ajay"));
		hs.add(new Employee("Varun"));
		System.out.println("Total Employee Data :- " + hs);
	}
}

Output :-
Total Employee Data :- [Ajay, Vinay, Pankaj, Varun]