Kaks klassi (Main ja Number). Mis prinditakse välja?

public class Main {
	
   public static void main(String[] args) {
      for (int i = 0; i < 10; i++) {
         Number n = new Number(i++);
         System.out.println(n.getValue());
      }
   }
}

public class Number {
    private int value;
    public Number(int value) {
        this.value = value;
    }
    private int getValue() {
        return value;
    }
}

public class Fruit {
    int price = 10;
    public int getPrice() {
        return price;
    }
}

public class Apple extends Fruit {
    @Override
    public int getPrice() {
        return super.getPrice() * 3 + super.getPrice();
    }
}

public class Main {
    public static void main(String[] args) {
        Fruit fruit = new Fruit();
        Apple firstApple = new Apple();
        Apple secondApple = new Apple();
        
        System.out.println(fruit.getPrice() + firstApple.getPrice() + secondApple.getPrice());
    }
}

Mis on programmi väljund?

Mida prindib antud kood?

public static void main(String[] args) {
    int[] numbers = {8, 6, 4, 6, 9, 6};
    printNumbers(numbers);
}
public void printNumbers(int[] numbers) {
    for (int number: numbers) {
        System.out.print(number);
    }
}

public static int getSum() {
    int sum = 0;
    for (int a = 50; a >= 0; a--) {
        if (a % 10 == 0) {
            sum += 1;
        }
        if (a % 5 == 0) {
            sum -= 1;
        }
    }
    return sum;
}

Mida tagastaks funktsioon välja kutsudes?

Mitu argumenti võtab objekti klassi equals() meetod?

// import ALL useful classes
import java.util.*;
class lamp {
  
  int static count = 0;
      public int id;
  public static List<lamp> Lamps = new ArrayList<lamp>();
  
  public lamp() {
    if (Lamps.size() >= 10) {
      throw new NullPointerException("It is impossible to have more than 10 lamps!");
    }
    // give every instance an unique id
    this.id = count++;
    Lamps.add(this);
  }
  
  public List<lamp> getLamps() {
    // ensure user cannot change this list
    return Collections.unmodifiableList(Lamps);
  }
  
  public static void main(String[] args) {
    while (true) {
      lamp m = new lamp();
      System.out.println(m.id);
    }}}

Mille vastu on koodi kirjutamisel eksitud (vali 5)?

Mida tagastab antud funktsioon?

public String loopAlphabet() {
    String alphabet = "abcdefghijklmnopqrstuvwxyz";
    // 'a' ascii code is 97
    String answ = "";
    for (int i = 0; i < alphabet.length(); ++i) {
        int letter = (int) alphabet.charAt(i);
        if (letter % 2 != 0) answ += (char) letter;
    }
    return answ;
}

Milline numbrijada on selle tsükli väljundiks?

for (int i = 0; i < 5; i++) {
    System.out.print(++i + i-- + " ");
}

Abstraktsed klassid erinevad teistest klassidest selle poolest, et...

Vii koodijupp kokku selle tüüpilise tulemusega.