What Will Be The Output Of The Following Java Programp Pre #1104

What will be the output of the following Java program?</p> <pre><code class="language-java" line="1"> public class BoxDemo { public static <U> void addBox(U u, java.util.List<Box<U>> boxes) { Box<U> box = new Box<>(); box.set(u); boxes.add(box); } public static <U> void outputBoxes(java.util.List<Box<U>> boxes) { int counter = 0; for (Box<U> box: boxes) { U boxContents = box.get(); System.out.println("[" + boxContents.toString() + "]"); counter++; } } public static void main(String[] args) { java.util.ArrayList<Box<Integer>> listOfIntegerBoxes = new java.util.ArrayList<>(); BoxDemo.<Integer>addBox(Integer.valueOf(0), listOfIntegerBoxes); BoxDemo.outputBoxes(listOfIntegerBoxes); } }</code></pre>

This multiple choice question (MCQ) is related to the book/course gs gs128 Java. It can also be found in gs gs128 Java Interfaces Packages - Java Type Interface - Quiz No.1.

 public class BoxDemo { public static <U> void addBox(U u, java.util.List<Box<U>> boxes) { Box<U> box = new Box<>(); box.set(u); boxes.add(box); } public static <U> void outputBoxes(java.util.List<Box<U>> boxes) { int counter = 0; for (Box<U> box: boxes) { U boxContents = box.get(); System.out.println("[" + boxContents.toString() + "]"); counter++; } } public static void main(String[] args) { java.util.ArrayList<Box<Integer>> listOfIntegerBoxes = new java.util.ArrayList<>(); BoxDemo.<Integer>addBox(Integer.valueOf(0), listOfIntegerBoxes); BoxDemo.outputBoxes(listOfIntegerBoxes); } }