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Java saraksta lielums() metode

The Izmērs() Saraksta interfeisa metode atgriež kopējo šajā sarakstā esošo elementu skaitu.

Sintakse

 public int size () 

Parametri

TAS

Atgriezties

Metode size() atgriež elementu skaitu šajā sarakstā.

1. piemērs

 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); } } 
Izmēģiniet to tūlīt

Izvade:

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

2. piemērs

 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); } } } 
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Izvade:

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

3. piemērs

 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++){>