Student

public class Student {
    private int id;
    private String name;
    private Gender gender;

    public Student(int id, String name, Gender gender) {
        super();
        this.id = id;
        this.name = name;
        this.gender = gender;
    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public Gender getGender() {
        return gender;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((gender == null) ? 0 : gender.hashCode());
        result = prime * result + id;
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this.name.equals(((Student) obj).getName()) && this.id == ((Student) obj).getId()
                && this.getGender().equals(((Student) obj).getGender())) {
            return true;
        }
        return false;
    }

}