El método size() de CopyOnWriteArraySet devuelve el tamaño del conjunto. Devuelve el número de elementos del Conjunto actual.
Sintaxis:
public int size()
Valor devuelto: la función devuelve el número de elementos en el conjunto actual.
Los siguientes programas ilustran la función anterior:
Programa 1:
// Java Program to illustrate the CopyOnWriteArraySet
// size() 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>();
// print CopyOnWriteArraySet
System.out.println("CopyOnWriteArraySet: "
+ ArrSet);
// size value print
System.out.println("size of ArrSet: "
+ ArrSet.size());
// Add elements
ArrSet.add(32);
ArrSet.add(67);
ArrSet.add(98);
ArrSet.add(100);
// print CopyOnWriteArraySet
System.out.println("CopyOnWriteArraySet: "
+ ArrSet);
// size value print
System.out.println("size of ArrSet: "
+ ArrSet.size());
}
}
Producción:
CopyOnWriteArraySet: [] size of ArrSet: 0 CopyOnWriteArraySet: [32, 67, 98, 100] size of ArrSet: 4
Programa 2:
// Java Program to illustrate the CopyOnWriteArraySet
// size() 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);
// size value print
System.out.println("size of ArrSet: "
+ ArrSet.size());
}
}
Producción:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo] size of ArrSet: 4
Referencia: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#size–