What is the output of the following program:import java.util.*;public class linked_list_size { public static void main(String args[]) { LinkedList<String> ll = new LinkedList<String>(); ll.add("Cat"); ll.add("Dog"); ll.add("Rabbit"); System.out.println(ll.size()); }}Select one:a. 6b. 3c. nulld. 4
Question
What is the output of the following program:import java.util.*;public class linked_list_size { public static void main(String args[]) { LinkedList<String> ll = new LinkedList<String>(); ll.add("Cat"); ll.add("Dog"); ll.add("Rabbit"); System.out.println(ll.size()); }}Select one:a. 6b. 3c. nulld. 4
Solution
The output of the program will be 3.
Here's the step-by-step explanation:
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The program starts with importing the java.util.* package, which includes the LinkedList class.
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A new class named "linked_list_size" is declared.
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Inside this class, the main method is declared. This is the entry point of any Java application.
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Inside the main method, a new LinkedList of Strings is created and assigned to the variable "ll".
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Three elements ("Cat", "Dog", "Rabbit") are added to this LinkedList using the add method.
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The size of the LinkedList is printed to the console using the size method. This method returns the number of elements in the LinkedList.
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Since there are three elements in the LinkedList, the output of the program will be 3.
So, the correct answer is b. 3.
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