Java ArrayList spliterator() metodi

❮ ArrayList metodlari

import java.util.ArrayList;
import java.util.Spliterator;

public class Main {
  public static void main(String[] args) {
  
    // Make a collection
    ArrayList<String> cars = new ArrayList<String>();
    cars.add("Volvo");
    cars.add("BMW");
    cars.add("Ford");
    cars.add("Mazda");
  
    // Get the spliterator and split it
    Spliterator<String> it1 = cars.spliterator();
    Spliterator<String> it2 = it1.trySplit();
    
    // Loop through the first spliterator
    System.out.println("First spliterator");
    while( it1.tryAdvance( (n) -> { System.out.println(n); } ) );
    
    // Loop through the second spliterator
    System.out.println("\nSecond spliterator");
    while( it2.tryAdvance( (n) -> { System.out.println(n); } ) );
  }
}

boolean x = it1.tryAdvance( (n) -> { System.out.println(n); });
while(x) {
  x = it1.tryAdvance( (n) -> { System.out.println(n); });
}

Ta’rif va qo‘llanilishi

spliterator() metodi ro‘yxat uchun Spliterator obyektini qaytaradi.

Spliterator — iteratorning maxsus turi. Iteratorlardan qanday foydalanishni o‘rganish uchun Java Iterator darsligimizga qarang.

Spliterator oddiy iteratordan ancha farq qiladi. Spliteratorning vazifasi — kolleksiyani kichikroq qismlarga ajratish, shunda har bir qismni alohida oqim (thread) qayta ishlay oladi. Spliterator interfeysida ikkita muhim metod bor:

• trySplit() - asl spliterator murojaat qila oladigan elementlarning (odatda va taxminan) yarmini aylanib chiqa oladigan yangi spliterator qaytaradi, asl spliterator esa qolgan yarmini aylanib chiqa oladi.
• tryAdvance(Consumer action) - spliterator uchun mavjud bo‘lgan keyingi elementga o‘tadi va u ustida amal bajarishga harakat qiladi. Agar keyingi element bo‘lmasa, false qaytaradi. Amalni lambda ifodasi orqali belgilash mumkin.

Sintaksis

public Spliterator spliterator()

Texnik tafsilotlar

Tegishli sahifalar

Java massivlari darsligi

Java ArrayList darsligi

Java Iterator darsligi