El método iterator() de CopyOnWriteArraySet devuelve un iterador sobre los elementos de este conjunto en la secuencia adecuada. El iterador NO admite el método de eliminación.
Sintaxis:
public Iterator iterator()
Valor devuelto: la función devuelve un iterador sobre los elementos del Conjunto.
Los siguientes programas ilustran la función anterior:
Programa 1:
// Java Program to illustrate the CopyOnWriteArraySet
// iterator() 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);
// Call iterator() method of
Iterator iteratorVals = ArrSet.iterator();
// Print elements of iterator
// created from CopyOnWriteArraySet
System.out.println("\nThe iterator values of "
+ "CopyOnWriteArraySet are:\n");
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
}
Producción:
CopyOnWriteArraySet: [32, 67, 100] The iterator values of CopyOnWriteArraySet are: 32 67 100
Programa 2:
// Java Program to illustrate the CopyOnWriteArraySet
// iterator() 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);
// Call iterator() method of
Iterator iteratorVals = ArrSet.iterator();
// Print elements of iterator
// created from CopyOnWriteArraySet
System.out.println("\nThe iterator values of "
+ "CopyOnWriteArraySet are:\n");
// prints the elements using an iterator
while (iteratorVals.hasNext()) {
System.out.println(iteratorVals.next());
}
}
}
Producción:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo] The iterator values of CopyOnWriteArraySet are: gopal gfg jgec sudo
Referencia: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#iterator–