removeAll()

Java LinkedList removeAll() metodi

Misol

Ro‘yxatdagi barcha elementlarni o‘chiring:

import java.util.LinkedList;

public class Main {
  public static void main(String[] args) {
    LinkedList<String> cars = new LinkedList<String>();
    cars.add("Volvo");
    cars.add("BMW");
    cars.add("Ford");
    cars.add("Mazda");
    cars.add("Toyota");
    cars.removeAll(cars);
    System.out.println(cars);
  }
}

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Ta’rif va qo‘llanilishi

removeAll() metodi ro‘yxatdan ko‘rsatilgan kolleksiyaga tegishli barcha elementlarni o‘chiradi.

Sintaksis

public boolean removeAll(Collection items)

Parametr qiymatlari

Parametr	Tavsif
items	Majburiy. Ro‘yxatdan o‘chiriladigan elementlarni o‘z ichiga olgan kolleksiya.

Texnik tafsilotlar

Qaytaradi:	Ro‘yxat o‘zgargan bo‘lsa `true`, aks holda `false`.
Istisno chiqaradi:	`NullPointerException` - agar kolleksiya null bo‘lsa.

Ko‘proq misollar

Misol

Ro‘yxatdan bir nechta elementni o‘chirish:

import java.util.LinkedList;

public class Main {
  public static void main(String[] args) {
    LinkedList<String> cars = new LinkedList<String>();
    cars.add("Volvo");
    cars.add("BMW");
    cars.add("Ford");
    cars.add("Mazda");
    cars.add("Toyota");
    
    LinkedList<String> remove = new LinkedList<String>();
    remove.add("Volvo");
    remove.add("Ford");
    remove.add("Mazda");
    
    cars.removeAll(remove);
    
    System.out.println(cars);
  }
}

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Tegishli sahifalar

Java massivlari darsligi

Java LinkedList darsligi

❮ LinkedList metodlari

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