zadanie_3

package com.company;

import java.util.*;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class Main {
    final static Lock m = new ReentrantLock();
    final static Condition c = m.newCondition();
    static boolean stop = false;
    static boolean ideVelke = true;
    static boolean ideMale = false;
    static int pocet = 0;
    static int ROZSAH = 100;
    static int pocetMalych = 0;
    static List<String> zaciatocneSlova = new ArrayList<>();
    static List<String> slova = new ArrayList<>();

    public static void main(String[] args) {
        /*
        Nacitanie slov zo vstupu a ich zaradenie do 2 kategorii - zacinajuce na velke pismeno a zvysok
         */
        System.out.println("Napiste rozne slova: ");
        Scanner sc = new Scanner(System.in);
        List<String> text = new ArrayList<>();
        text.addAll(Arrays.asList(sc.nextLine().split("\\s+")));

        for (String slovo:text
             ) {
            if (Character.isUpperCase(slovo.charAt(0))) {
                zaciatocneSlova.add(slovo);
            } else {
                slova.add(slovo);
            }
        }

        /*
        Vytvorenie jednotlivych vlakien
         */
        VkladajVelke vkladajVelke = new VkladajVelke();
        vkladajVelke.start();

        VkladajMale vkladajMale = new VkladajMale();
        vkladajMale.start();

        UkoncujVety ukoncujVety = new UkoncujVety();
        ukoncujVety.start();
    }

    static class VkladajVelke extends Thread {

        @Override
        public void run() {
            while (!stop) {
                m.lock();
                while (!ideVelke && !stop) {
                    c.signalAll();
                    try {
                        c.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                m.unlock();

                if (pocet == ROZSAH) { stop = true; break; }
                System.out.print(zaciatocneSlova.get(new Random().nextInt(zaciatocneSlova.size())));
                pocet++;

                m.lock();
                ideMale = true;
                ideVelke = false;
                m.unlock();
            }

            m.lock();
            c.signalAll();
            m.unlock();
        }
    }

    static class VkladajMale extends Thread  {

        @Override
        public void run() {
            while (!stop) {
                m.lock();
                while ((!ideMale || pocetMalych == 4) && !stop) {
                    ideMale = false;
                    c.signalAll();
                    try {
                        c.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                m.unlock();

                if (pocet == ROZSAH) { stop = true; break; }
                System.out.print(" " + slova.get(new Random().nextInt(slova.size())));
                pocet++;

                m.lock();
                pocetMalych++;
                m.unlock();

                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

            m.lock();
            c.signalAll();
            m.unlock();
        }
    }

    static class UkoncujVety extends Thread  {

        @Override
        public void run() {
            while (!stop) {
                m.lock();
                while ((ideVelke || ideMale) && !stop) {
                    c.signalAll();
                    try {
                        c.await();
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                m.unlock();

                if (stop) { break; }
                System.out.print(".\n");

                m.lock();
                ideVelke = true;
                ideMale = false;
                pocetMalych = 0;
                m.unlock();
            }

            m.lock();
            c.signalAll();
            m.unlock();
        }
    }
}