{"id":188948,"date":"2025-02-08T09:10:46","date_gmt":"2025-02-08T09:10:46","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=188948"},"modified":"2025-02-08T09:10:49","modified_gmt":"2025-02-08T09:10:49","slug":"draw-the-state-of-memory-diagram-at-the-point-immediately-after-the-last-statement-is-executed","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/08\/draw-the-state-of-memory-diagram-at-the-point-immediately-after-the-last-statement-is-executed\/","title":{"rendered":"draw the state-of-memory diagram at the point immediately after the last statement is executed"},"content":{"rendered":"\n<p>1.Given the Fraction class from Section 7.8, draw the state-of-memory diagram at the point immediately after the last statement is executed.<\/p>\n\n\n\n<p>Fraction f1, f2, f3;<\/p>\n\n\n\n<p>f1 = new Fraction(3, 8);<\/p>\n\n\n\n<p>f2 = new Fraction(2, 3);<\/p>\n\n\n\n<p>f3 = f1.add(f2);<\/p>\n\n\n\n<p>2.Consider the following class.<\/p>\n\n\n\n<p>class Dog {<\/p>\n\n\n\n<p>. . .<\/p>\n\n\n\n<p>private double weight;<\/p>\n\n\n\n<p>. . .<\/p>\n\n\n\n<p>public boolean isBiggerThan(Dog buddy){<\/p>\n\n\n\n<p>return this.getWeight() &gt; buddy.getWeight();<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>public double getWeight() {<\/p>\n\n\n\n<p>return weight;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>. . .<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>For each of the following code fragments, complete the state-of-memory diagram by filling in the arrows for this and buddy.<\/p>\n\n\n\n<p>Dog tuffy = new Dog(\u2026);<\/p>\n\n\n\n<p>Dog puffy = new Dog(\u2026);<\/p>\n\n\n\n<p>puffy.isBiggerThan(tuffy);<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-160.png\" alt=\"\" class=\"wp-image-188949\"\/><\/figure>\n\n\n\n<p>Dog tuffy = new Dog(\u2026);<\/p>\n\n\n\n<p>Dog puffy = new Dog(\u2026);<\/p>\n\n\n\n<p>tuffy.isBiggerThan(puffy);<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/02\/image-161.png\" alt=\"\" class=\"wp-image-188950\"\/><\/figure>\n\n\n\n<p>Complete the following constructor.<\/p>\n\n\n\n<p>class Student { private String<\/p>\n\n\n\n<p>name;<\/p>\n\n\n\n<p>private int<\/p>\n\n\n\n<p>age;<\/p>\n\n\n\n<p>private Address address;<\/p>\n\n\n\n<p>public Student(String name, int age, Address address){<\/p>\n\n\n\n<p>\/\/assign passed values to the data members<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>Let&#8217;s go step by step to address your questions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. State-of-Memory Diagram for Fraction Class<\/h3>\n\n\n\n<p>In the provided code:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Fraction f1, f2, f3;\nf1 = new Fraction(3, 8);\nf2 = new Fraction(2, 3);\nf3 = f1.add(f2);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>f1<\/strong> and <strong>f2<\/strong> are reference variables of type <code>Fraction<\/code>.<\/li>\n\n\n\n<li><code>f1 = new Fraction(3, 8)<\/code> creates an object of <code>Fraction<\/code> with numerator <code>3<\/code> and denominator <code>8<\/code>, and assigns the reference to <code>f1<\/code>.<\/li>\n\n\n\n<li><code>f2 = new Fraction(2, 3)<\/code> creates an object of <code>Fraction<\/code> with numerator <code>2<\/code> and denominator <code>3<\/code>, and assigns the reference to <code>f2<\/code>.<\/li>\n\n\n\n<li><code>f3 = f1.add(f2)<\/code> calls the <code>add<\/code> method on <code>f1<\/code>, passing <code>f2<\/code> as a parameter. The method performs addition of the fractions and creates a new <code>Fraction<\/code> object, which is assigned to <code>f3<\/code>.<\/li>\n<\/ul>\n\n\n\n<p><strong>State-of-Memory Diagram:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>f1<\/code> points to a <code>Fraction<\/code> object with <code>numerator = 3<\/code> and <code>denominator = 8<\/code>.<\/li>\n\n\n\n<li><code>f2<\/code> points to a <code>Fraction<\/code> object with <code>numerator = 2<\/code> and <code>denominator = 3<\/code>.<\/li>\n\n\n\n<li><code>f3<\/code> points to a new <code>Fraction<\/code> object, the result of <code>f1.add(f2)<\/code>. The exact result would depend on how the addition is implemented, but typically this would result in a fraction like <code>(3\/8 + 2\/3)<\/code> which can be simplified.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Dog Class Memory Diagrams<\/h3>\n\n\n\n<p>For the <code>Dog<\/code> class, you&#8217;re working with two dogs, <code>tuffy<\/code> and <code>puffy<\/code>. Let&#8217;s break down the scenarios.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">First case: <code>puffy.isBiggerThan(tuffy);<\/code><\/h4>\n\n\n\n<p>In this case, <code>puffy<\/code> calls <code>isBiggerThan<\/code> on <code>tuffy<\/code>. So:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>this<\/code> refers to <code>puffy<\/code>.<\/li>\n\n\n\n<li><code>buddy<\/code> refers to <code>tuffy<\/code>.<\/li>\n<\/ul>\n\n\n\n<p>The method compares the weight of <code>puffy<\/code> to <code>tuffy<\/code> and returns whether <code>puffy<\/code> is bigger.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Second case: <code>tuffy.isBiggerThan(puffy);<\/code><\/h4>\n\n\n\n<p>Here, <code>tuffy<\/code> calls <code>isBiggerThan<\/code> on <code>puffy<\/code>. So:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>this<\/code> refers to <code>tuffy<\/code>.<\/li>\n\n\n\n<li><code>buddy<\/code> refers to <code>puffy<\/code>.<\/li>\n<\/ul>\n\n\n\n<p>The method compares the weight of <code>tuffy<\/code> to <code>puffy<\/code> and returns whether <code>tuffy<\/code> is bigger.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Constructor for <code>Student<\/code> Class<\/h3>\n\n\n\n<p>You need to write the constructor for the <code>Student<\/code> class:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Student {\n    private String name;\n    private int age;\n    private Address address;\n\n    public Student(String name, int age, Address address) {\n        this.name = name;        \/\/ Assign the passed name to the instance variable\n        this.age = age;          \/\/ Assign the passed age to the instance variable\n        this.address = address;  \/\/ Assign the passed address to the instance variable\n    }\n}<\/code><\/pre>\n\n\n\n<p>This constructor takes three parameters: <code>name<\/code>, <code>age<\/code>, and <code>address<\/code>, and assigns them to the instance variables <code>name<\/code>, <code>age<\/code>, and <code>address<\/code> of the <code>Student<\/code> object being created.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Constructor Definition<\/strong>: The constructor <code>Student(String name, int age, Address address)<\/code> is called whenever a new <code>Student<\/code> object is instantiated. It initializes the fields <code>name<\/code>, <code>age<\/code>, and <code>address<\/code> with the values provided during object creation.<\/li>\n\n\n\n<li><strong><code>this<\/code> Keyword<\/strong>: The <code>this<\/code> keyword refers to the current instance of the class. In the constructor, it is used to differentiate the instance variables (e.g., <code>this.name<\/code>) from the parameters (e.g., <code>name<\/code>), especially when the parameter names are the same as the instance variable names.<\/li>\n\n\n\n<li><strong>Data Members Initialization<\/strong>: The constructor assigns the provided values to the corresponding fields:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>this.name = name<\/code>: Assigns the value of the <code>name<\/code> parameter to the <code>name<\/code> field.<\/li>\n\n\n\n<li><code>this.age = age<\/code>: Assigns the value of the <code>age<\/code> parameter to the <code>age<\/code> field.<\/li>\n\n\n\n<li><code>this.address = address<\/code>: Assigns the value of the <code>address<\/code> parameter to the <code>address<\/code> field.<\/li>\n<\/ul>\n\n\n\n<p>This ensures that when a <code>Student<\/code> object is created, its attributes are properly initialized.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.Given the Fraction class from Section 7.8, draw the state-of-memory diagram at the point immediately after the last statement is executed. Fraction f1, f2, f3; f1 = new Fraction(3, 8); f2 = new Fraction(2, 3); f3 = f1.add(f2); 2.Consider the following class. class Dog { . . . private double weight; . . . public [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-188948","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188948","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=188948"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/188948\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=188948"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=188948"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=188948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}