sunmeat

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SIMPLE VERSION OF CAT CLASS:
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package com.alex.oop;

class Cat { // do not change class name!

    // поля:
    String name; // кличка кота

sunmeat

package com.alex.constructors;

class Person {

    String name;
    String surname;
    int age;

    Person(String n, String s, int a) {
        name = n;

sunmeat

package com.alex.constructors;

class Person {

    String name;
    String surname;
    int age;

    Person() { // конструктор без параметров
        name = "Иван";

sunmeat

package com.alex.destructors;

class Person {

    String name;
    String surname;
    int age;

    Person() { // конструктор без параметров
        name = "Иван";

sunmeat

package com.alex.constructors;

class Person {

    String name;
    String surname;
    int age;

    Person() { // конструктор без параметров
        name = "Иван";

sunmeat

package com.alex.constructors;

class Person {

    String name = "Иван";
    String surname = "Иванов";
    int age = 25;

    Person() { // конструктор без параметров

sunmeat

package com.alex.constructors;

class Person {

    String name;
    String surname;
    int age;

    Person() { // конструктор без параметров
        this("Иван", "Иванов", 25);

sunmeat

package com.alex.constructors;

import java.util.Arrays;

class Person {

    String name;
    String surname;
    int age;

sunmeat

package com.alex.encapsulation;

class Person {

    Person ref = this;
    
    String name;
    String surname;
    int age;

sunmeat

package com.alex.encapsulation;

import java.util.Date;

class Person {

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