What Will Be The Output Of The Following Java Codep Pre #838

What will be the output of the following Java code?</p> <pre><code class="language-java"> import java.util.*; class Base { LinkedList l = new LinkedList(); void sum() { int sum=0; Iterator i = l.iterator(); while(i.hasNext()) sum+=(int)i.next(); System.out.println(sum); } } class Derived extends Base { void add(int a) { l.add(a); } } public class Sum { public static void main(String[] args) { Derived a = new Derived(); a.add(31); a.add(36); a.add(28); a.add(51); a.sum(); } }</code></pre>

This multiple choice question (MCQ) is related to the book/course gs gs111 OOP Object Oriented Programming Java. It can also be found in gs gs111 Inheritance (Using Java) - Single Level Inheritance - Quiz No.2.

 import java.util.*; class Base { LinkedList l = new LinkedList(); void sum() { int sum=0; Iterator i = l.iterator(); while(i.hasNext()) sum+=(int)i.next(); System.out.println(sum); } } class Derived extends Base { void add(int a) { l.add(a); } } public class Sum { public static void main(String[] args) { Derived a = new Derived(); a.add(31); a.add(36); a.add(28); a.add(51); a.sum(); } }