Schoolboy

package com.company;

import java.util.Objects;

public class Schoolboy extends Learner {

    protected enum Behavior {UNSATISFACTORY, SATISFACTORY, GOOD} ;
    protected int grade;
    protected Behavior behavior;

    public Schoolboy(String surname, String eduInstitution, double meanMark, int grade, Behavior behavior) {
        super(surname, eduInstitution, meanMark);
        this.grade = grade;
        this.behavior = behavior;
    }

    public int getGrade() {
        return grade;
    }

    public void setGrade(int grade) {
        this.grade = grade;
    }

    public Behavior getBehavior() {
        return behavior;
    }

    public void setBehavior(Behavior behavior) {
        this.behavior = behavior;
    }

    @Override
    public String toString() {
        StringBuffer stringBuffer= new StringBuffer(surname);
        stringBuffer.append(" ");
        stringBuffer.append(eduInstitution);
        stringBuffer.append(" ");
        stringBuffer.append(meanMark);
        stringBuffer.append(" ");
        stringBuffer.append(grade);
        stringBuffer.append(" ");
        stringBuffer.append(behavior.toString());
        return stringBuffer.toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof Schoolboy)) return false;
        if (!super.equals(o)) return false;
        Schoolboy schoolboy = (Schoolboy) o;
        return getGrade() == schoolboy.getGrade() &&
                getBehavior() == schoolboy.getBehavior();
    }

    @Override
    public int hashCode() {
        return Objects.hash(super.hashCode(), getGrade(), getBehavior());
    }
}