IL misurare() Il metodo dell'interfaccia List restituisce il numero totale di elementi presenti in questo elenco.

Sintassi

 public int size () 

Parametri

QUELLO

pausa Java

Ritorno

Il metodo size() restituisce il numero di elementi in questo elenco.

come aprire un file in java

Esempio 1

 import java.util.LinkedList; import java.util.List; public class JavaListSizeExample1 { public static void main(String[] args) { List list= new LinkedList(); list.add(34); list.add(56); list.add(12); list.add(43); System.out.println('List : '+list); //it will return the total size of the list int size= list.size(); System.out.println('Total element of the list : '+size); } } 

Produzione:

 List : [34, 56, 12, 43] Total element of the list : 4 

Esempio 2

 import java.util.LinkedList; import java.util.List; import java.util.ListIterator; class Student{ String name; String school; Student(String name, String school){ this.name=name; this.school=school; } public String toString() { return ' Name : '+this.name+' School : '+this.school; } } public class JavaListSizeExample2 { public static void main(String[] args) { List list = new LinkedList(); Student s1= new Student('Reema','Gita Convent School'); Student s2= new Student('Geetu','Gita Convent School'); Student s3= new Student('Saloni','Eicher School'); list.add(s1); list.add(s2); list.add(s3); //returns the total number of students in the list System.out.println('Total students : '+list.size()); for (Student val : list){ System.out.println(val); } } } 

Produzione:

 Total students : 3 Name : Reema School : Gita Convent School Name : Geetu School : Gita Convent School Name : Saloni School : Eicher School 

Esempio 3

 import java.util.LinkedList; import java.util.List; public class JavaListSizeExample3 { public static void main(String[] args) { List list= new LinkedList(); for (char ch=&apos;a&apos;;ch<='z';ch++){ list.add(ch); } system.out.println('total alphabets : '+list.size()); system.out.println('list '+list); < pre> <span> Test it Now </span> <p> <strong>Output:</strong> </p> <pre> Total alphabets : 26 List : [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z] </pre></='z';ch++){>