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CopyOnWriteArrayList spliterator() method in Java
  • Last Updated : 26 Nov, 2018

The spliterator() method of CopyOnWriteArrayList returns an spliterator over the elements in this list in proper sequence. There is no need of synchronization while operating on the spliterator.

Syntax:

public Spliterator spliterator()

Parameters: The function does not accept any parameters.

Return Value: The function returns an spliterator over the elements in the list.

Below programs illustrate the above function:



Program 1:

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// Java Program to illustrate the CopyOnWriteArrayList
// spliterator() method in Java
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of CopyOnWriteArrayList
        CopyOnWriteArrayList<Integer> ArrLis
            = new CopyOnWriteArrayList<Integer>();
  
        // Add elements
        ArrLis.add(32);
        ArrLis.add(67);
        ArrLis.add(67);
        ArrLis.add(100);
  
        // print CopyOnWriteArrayList
        System.out.println("CopyOnWriteArrayList: " + ArrLis);
  
        Spliterator<Integer> numbers = ArrLis.spliterator();
  
        // print result from Spliterator
        System.out.println("list of Numbers:");
  
        // forEachRemaining method  of Spliterator
        numbers.forEachRemaining((n) -> System.out.println(n));
    }
}

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Output:

CopyOnWriteArrayList: [32, 67, 67, 100]
list of Numbers:
32
67
67
100

Program 2:

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// Java Program to illustrate the CopyOnWriteArrayList
// spliterator() method in Java
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of CopyOnWriteArrayList
        CopyOnWriteArrayList<String> ArrLis
            = new CopyOnWriteArrayList<String>();
  
        // Add elements
        ArrLis.add("gopal");
        ArrLis.add("gfg");
        ArrLis.add("jgec");
        ArrLis.add("sudo");
  
        // print CopyOnWriteArrayList
        System.out.println("CopyOnWriteArrayList: " + ArrLis);
  
        Spliterator<String> numbers = ArrLis.spliterator();
  
        // print result from Spliterator
        System.out.println("list of strings:");
  
        // forEachRemaining method  of Spliterator
        numbers.forEachRemaining((n) -> System.out.println(n));
    }
}

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Output:

CopyOnWriteArrayList: [gopal, gfg, jgec, sudo]
list of strings:
gopal
gfg
jgec
sudo

Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArrayList.html#spliterator–

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