Java List size() Method with Examples

by Online Tutorials Library July 22, 2022

Java List size() Method

The size() method of List Interface returns the total number of elements present in this list.

Syntax

Parameters

Return

The size() method returns the number of elements in this list.

Example 1

  import java.util.LinkedList;  import java.util.List;  public class JavaListSizeExample1 {  public static void main(String[] args) {          List<Integer> 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);      }  }  

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Output:

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

Example 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<Student> 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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Output:

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

Example 3

  import java.util.LinkedList;  import java.util.List;  public class JavaListSizeExample3 {  public static void main(String[] args) {          List<Character> list= new LinkedList<>();  for (char ch=’a’;ch<=’z’;ch++){  list.add(ch);          }  System.out.println(“Total alphabets : “+list.size());  System.out.println(“List : “+list);      }  }  

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Output:

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]

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Java List size() Method with Examples

Java List size() Method

Syntax

Parameters

Return

Example 1

Example 2

Example 3

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