Displaying and size of the linked list

display_and_size_of_linked_list.java

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+import java.io.*;
+import java.util.*;
+
+public class Main{
+    public static class Node{
+        int data;
+        Node next;
+    }
+    public static class LinkedList{
+        Node head;
+        Node tail;
+        int size;
+
+        void addList(int val){
+            Node temp=new Node();
+            temp.data=val;
+            temp.next=null;
+            if(size==0){
+            head=tail=temp;
+            }
+            else{
+            tail.next=temp;
+            tail=temp;
+         } 
+         size++;
+        }
+        public int size(){
+            return size;
+        }
+        public void display(){
+            Node temp=head;
+            while(temp!=null){
+                System.out.print(temp.data+" ");
+                temp=temp.next;
+            }
+            System.out.println();
+        }
+    }
+}