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CopyOnWriteArraySet spliterator() method in Java

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The spliterator() method of CopyOnWriteArraySet returns an spliterator over the elements in this Set in proper sequence. There is no need of synchronization while operating on the spliterator. Syntax:
public Spliterator spliterator()
Return Value: The function returns an spliterator over the elements in the Set. Below programs illustrate the above function: Program 1:
// Java Program to illustrate the CopyOnWriteArraySet
// spliterator() method in Java
  
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of CopyOnWriteArraySet
        CopyOnWriteArraySet<Integer> ArrSet
            = new CopyOnWriteArraySet<Integer>();
  
        // Add elements
        ArrSet.add(32);
        ArrSet.add(67);
        ArrSet.add(67);
        ArrSet.add(100);
  
        // print CopyOnWriteArraySet
        System.out.println("CopyOnWriteArraySet: "
                           + ArrSet);
  
        Spliterator<Integer>
            numbers = ArrSet.spliterator();
  
        // print result from Spliterator
        System.out.println("Set of Numbers:");
  
        // forEachRemaining method  of Spliterator
        numbers
            .forEachRemaining(
                (n) -> System.out.println(n));
    }
}

                    
Output:
CopyOnWriteArraySet: [32, 67, 100]
Set of Numbers:
32
67
100
Program 2:
// Java Program to illustrate the CopyOnWriteArraySet
// spliterator() method in Java
  
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create object of CopyOnWriteArraySet
        CopyOnWriteArraySet<String> ArrSet
            = new CopyOnWriteArraySet<String>();
  
        // Add elements
        ArrSet.add("gopal");
        ArrSet.add("gfg");
        ArrSet.add("jgec");
        ArrSet.add("sudo");
  
        // print CopyOnWriteArraySet
        System.out.println("CopyOnWriteArraySet: "
                           + ArrSet);
  
        Spliterator<String>
            numbers = ArrSet.spliterator();
  
        // print result from Spliterator
        System.out.println("Set of strings:");
  
        // forEachRemaining method  of Spliterator
        numbers
            .forEachRemaining(
                (n) -> System.out.println(n));
    }
}

                    
Output:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo]
Set of strings:
gopal
gfg
jgec
sudo
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#spliterator–

Last Updated : 10 Dec, 2018
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