person encapsulation

person.java

package com.alex.encapsulation;

import java.util.Date;

class Person {

    private String name;
    private Date birthday;
    private boolean knowJava;

    public String getName() {
        return name;
    }

    public void setName(String name) /*throws Exception*/ {
        //if(name.equalsIgnoreCase("Вася")) throw new Exception("недопустимое имя... :)");
        this.name = name;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(int day, int month, int year) {
        this.birthday = new Date(year, month, day);
    }

    public boolean isKnowJava() {
        return knowJava;
    }

    public void setKnowJava(boolean knowJava) {
        this.knowJava = knowJava;
    }

    public Person() {
        setName("Ivan");
        setBirthday(1, 1, 1970);
        setKnowJava(false);
    }
}

class Program {

    public static void main(String[] args) {
        Person p = new Person();
        p.setName("Alex");
        p.setBirthday(10, 3, 1989);
        p.setKnowJava(true);
        System.out.println(p.getName());
        System.out.println(p.getBirthday());
        System.out.println(p.isKnowJava());
    }
}