El método hashCode() de CopyOnWriteArrayList devuelve el valor hashCode de la lista.
Sintaxis:
public int hashCode()
Parámetros: La función no acepta ningún parámetro.
Valor devuelto: la función devuelve el valor hashCode de la lista.
Los siguientes programas ilustran la función anterior:
Programa 1:
// Java Program to illustrate the CopyOnWriteArrayList
// hashCode() 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(98);
ArrLis.add(100);
// print CopyOnWriteArrayList
System.out.println("CopyOnWriteArrayList: "
+ ArrLis);
// hashCode value print
System.out.println("hashCode value: "
+ ArrLis.hashCode());
}
}
Producción:
CopyOnWriteArrayList: [32, 67, 98, 100] hashCode value: 1944358
Programa 2:
// Java Program to illustrate the CopyOnWriteArrayList
// hashCode() 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);
// hashCode value print
System.out.println("hashCode value: "
+ ArrLis.hashCode());
}
}
Producción:
CopyOnWriteArrayList: [gopal, gfg, jgec, sudo] hashCode value: -1942417272
Referencia: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArrayList.html#hashCode–