{"id":6329,"date":"2025-06-26T07:14:05","date_gmt":"2025-06-26T02:14:05","guid":{"rendered":"https:\/\/afzalbadshah.com\/?p=6329"},"modified":"2025-09-08T10:34:38","modified_gmt":"2025-09-08T05:34:38","slug":"classes-and-objects-in-java-beginners-guide-with-real-life-examples","status":"publish","type":"post","link":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/","title":{"rendered":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Programming is about solving real-life problems. Imagine you&#8217;re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). <a href=\"https:\/\/afzalbadshah.com\/index.php\/comprehensive-guide-to-object-oriented-programming-oop-in-java\/\" target=\"_blank\" rel=\"noopener\" title=\"\">You can visit the detailed tutorial here. <\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To represent such entities in programming, we use two powerful tools:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Class (the blueprint)<\/li>\n\n\n\n<li>Object (the actual entity created from the blueprint)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s break this down step by step.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is a Class?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A class is a template or blueprint that describes what data (attributes) and what actions (functions\/methods) an object of that type will have.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In real life:<br>Class is like a design of a car, you define what all cars will have: engine, color, model, and what they can do: start, stop, accelerate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In code, it looks like this (Java):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Car {\n    \/\/ Attributes (data)\n    String color;\n    String model;\n    int year;\n\n    \/\/ Function (behavior)\n    void startEngine() {\n        System.out.println(\"Engine started!\");\n    }\n\n    void displayDetails() {\n        System.out.println(\"Model: \" + model + \", Year: \" + year + \", Color: \" + color);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Explanation:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>Car<\/code> is the class name.<\/li>\n\n\n\n<li><code>color<\/code>, <code>model<\/code>, <code>year<\/code> are attributes.<\/li>\n\n\n\n<li><code>startEngine()<\/code> and <code>displayDetails()<\/code> are functions (also called methods).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What is an Object?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An object is a real instance of a class. It\u2019s like building an actual car from the design.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can create multiple cars (objects) from one class.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=640%2C360&#038;ssl=1\" alt=\"\" class=\"wp-image-6307\" srcset=\"https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=1536%2C864&amp;ssl=1 1536w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?resize=480%2C270&amp;ssl=1 480w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2024\/09\/8-2.jpg?w=1280&amp;ssl=1 1280w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption class=\"wp-element-caption\">Difference between classes and objects<\/figcaption><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Main {\n    public static void main(String&#91;] args) {\n        \/\/ Create object car1\n        Car car1 = new Car();\n        car1.color = \"Red\";\n        car1.model = \"Toyota Corolla\";\n        car1.year = 2022;\n        car1.startEngine();\n        car1.displayDetails();\n\n        \/\/ Create another object car2\n        Car car2 = new Car();\n        car2.color = \"Blue\";\n        car2.model = \"Honda Civic\";\n        car2.year = 2021;\n        car2.startEngine();\n        car2.displayDetails();\n    }\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Output:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Engine started!\nModel: Toyota Corolla, Year: 2022, Color: Red\nEngine started!\nModel: Honda Civic, Year: 2021, Color: Blue\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Key points:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>car1<\/code> and <code>car2<\/code> are two different objects with their own values.<\/li>\n\n\n\n<li>But they share the same structure because they were created from the same class.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Structure of a Class<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every class has:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Attributes (Data) \u2013 These are the characteristics.<\/li>\n\n\n\n<li>Functions (Methods) \u2013 These define behavior.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Let\u2019s now apply this to another example: a Student.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Student {\n    String name;\n    int rollNumber;\n    String course;\n\n    void introduce() {\n        System.out.println(\"Hello, my name is \" + name + \" and I study \" + course);\n    }\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Now create student objects:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    public static void main(String&#91;] args) {\n        Student s1 = new Student();\n        s1.name = \"Ali\";\n        s1.rollNumber = 101;\n        s1.course = \"Computer Science\";\n        s1.introduce();\n\n        Student s2 = new Student();\n        s2.name = \"Sara\";\n        s2.rollNumber = 102;\n        s2.course = \"Software Engineering\";\n        s2.introduce();\n    }\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Output:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Hello, my name is Ali and I study Computer Science\nHello, my name is Sara and I study Software Engineering\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Real-World Mapping<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Real Life Concept<\/th><th>Programming Equivalent<\/th><\/tr><\/thead><tbody><tr><td>Design of a car<\/td><td>Class<\/td><\/tr><tr><td>A specific car in showroom<\/td><td>Object (<code>car1<\/code>, <code>car2<\/code>)<\/td><\/tr><tr><td>Name, color, engine<\/td><td>Attributes (<code>model<\/code>, <code>year<\/code>)<\/td><\/tr><tr><td>Start engine, drive<\/td><td>Functions (<code>startEngine()<\/code>)<\/td><\/tr><tr><td>Student record form<\/td><td>Class <code>Student<\/code><\/td><\/tr><tr><td>A real student<\/td><td>Object (<code>s1<\/code>, <code>s2<\/code>)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why is it Useful?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Classes and objects bring many advantages that make programs more efficient, organized, and easier to manage. Here are some of the main reasons why they are useful:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reusability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can define a class once and use it to create multiple objects. This reduces code duplication and improves efficiency.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Modularity<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Classes keep related data and behavior together, making the code easier to understand, debug, and modify.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Scalability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can build large applications by managing many objects in a structured way. This is essential for real-world systems like banking or healthcare software.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Encapsulation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Encapsulation hides internal data and allows interaction through methods only. This protects data and prevents accidental changes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Practice Task for Students<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Create a class <code>Book<\/code> with attributes: <code>title<\/code>, <code>author<\/code>, and <code>year<\/code>.<\/li>\n\n\n\n<li>Add a method <code>showDetails()<\/code> to print the book&#8217;s information.<\/li>\n\n\n\n<li>Create two book objects and show their details.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Programming is about solving real-life problems. Imagine you&#8217;re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the detailed tutorial here. To represent such entities in programming, we use two powerful tools: Let\u2019s break this down step by step. What is a Class?&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":6332,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[602],"tags":[701,702,603],"class_list":["post-6329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-object-oriented-programing-oop","tag-classes","tag-objects","tag-oop"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Programming is about solving real-life problems. Imagine you&#039;re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Afzal Badshah, PhD\"\/>\n\t<meta name=\"google-site-verification\" content=\"B8FNGv4w1toMpU3HUnD_SN9H9YMtp1ObsLuEDuirArI\" \/>\n\t<meta name=\"p:domain_verify\" content=\"87b5ca26c36438b20581a102dc290a47\" \/>\n\t<meta name=\"yandex-verification\" content=\"0eb3e2a9157fd34d\" \/>\n\t<meta name=\"keywords\" content=\"classes,objects,oop,object oriented programing (oop)\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.0.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_GB\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Afzal Badshah, PhD - Unlocking Mastery in Parenting, Teaching, Learning, Academic, and Life Skills: Your Guide to Excellence\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD\" \/>\n\t\t<meta property=\"og:description\" content=\"Programming is about solving real-life problems. Imagine you&#039;re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-06-26T02:14:05+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-09-08T05:34:38+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/web.facebook.com\/abmanduri\/\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@DrAFZALBADSHAH\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Programming is about solving real-life problems. Imagine you&#039;re designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the\" \/>\n\t\t<meta name=\"twitter:creator\" content=\"@DrAFZALBADSHAH\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg\" \/>\n\t\t<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t\t<meta name=\"twitter:data1\" content=\"Afzal Badshah, PhD\" \/>\n\t\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#blogposting\",\"name\":\"Classes and Objects in Java: Beginner\\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD\",\"headline\":\"Classes and Objects in Java: Beginner\\u2019s Guide with Real-Life Examples\",\"author\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/author\\\/afzalbadshah-com\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/#person\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/afzalbadshah.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Copy-of-OOP.jpg?fit=1920%2C1080&ssl=1\",\"width\":1920,\"height\":1080},\"datePublished\":\"2025-06-26T07:14:05+05:00\",\"dateModified\":\"2025-09-08T10:34:38+05:00\",\"inLanguage\":\"en-GB\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#webpage\"},\"articleSection\":\"Object Oriented Programing (OOP), classes, objects, OOP\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/afzalbadshah.com\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/#listItem\",\"name\":\"Courses\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/#listItem\",\"position\":2,\"name\":\"Courses\",\"item\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/object-oriented-programing-oop\\\/#listItem\",\"name\":\"Object Oriented Programing (OOP)\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/object-oriented-programing-oop\\\/#listItem\",\"position\":3,\"name\":\"Object Oriented Programing (OOP)\",\"item\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/object-oriented-programing-oop\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#listItem\",\"name\":\"Classes and Objects in Java: Beginner\\u2019s Guide with Real-Life Examples\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/#listItem\",\"name\":\"Courses\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#listItem\",\"position\":4,\"name\":\"Classes and Objects in Java: Beginner\\u2019s Guide with Real-Life Examples\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/category\\\/courses\\\/object-oriented-programing-oop\\\/#listItem\",\"name\":\"Object Oriented Programing (OOP)\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/#person\",\"name\":\"Afzal Badshah, PhD\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#personImage\",\"url\":\"https:\\\/\\\/afzalbadshah.com\\\/wp-content\\\/litespeed\\\/avatar\\\/27d3d5e33aa81b3152e368c66871f22f.jpg?ver=1787150587\",\"width\":96,\"height\":96,\"caption\":\"Afzal Badshah, PhD\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/author\\\/afzalbadshah-com\\\/#author\",\"url\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/author\\\/afzalbadshah-com\\\/\",\"name\":\"Afzal Badshah, PhD\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#authorImage\",\"url\":\"https:\\\/\\\/afzalbadshah.com\\\/wp-content\\\/litespeed\\\/avatar\\\/27d3d5e33aa81b3152e368c66871f22f.jpg?ver=1787150587\",\"width\":96,\"height\":96,\"caption\":\"Afzal Badshah, PhD\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#webpage\",\"url\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/\",\"name\":\"Classes and Objects in Java: Beginner\\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD\",\"description\":\"Programming is about solving real-life problems. Imagine you're designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the\",\"inLanguage\":\"en-GB\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/author\\\/afzalbadshah-com\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/author\\\/afzalbadshah-com\\\/#author\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/afzalbadshah.com\\\/wp-content\\\/uploads\\\/2025\\\/06\\\/Copy-of-OOP.jpg?fit=1920%2C1080&ssl=1\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#mainImage\",\"width\":1920,\"height\":1080},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/index.php\\\/2025\\\/06\\\/26\\\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\\\/#mainImage\"},\"datePublished\":\"2025-06-26T07:14:05+05:00\",\"dateModified\":\"2025-09-08T10:34:38+05:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/#website\",\"url\":\"https:\\\/\\\/afzalbadshah.com\\\/\",\"name\":\"Afzal Badshah, PhD\",\"alternateName\":\"Afzal Badshah\",\"description\":\"Unlocking Mastery in Parenting, Teaching, Learning, Academic, and Life Skills: Your Guide to Excellence\",\"inLanguage\":\"en-GB\",\"publisher\":{\"@id\":\"https:\\\/\\\/afzalbadshah.com\\\/#person\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD","description":"Programming is about solving real-life problems. Imagine you're designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the","canonical_url":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/","robots":"max-image-preview:large","keywords":"classes,objects,oop,object oriented programing (oop)","webmasterTools":{"google-site-verification":"B8FNGv4w1toMpU3HUnD_SN9H9YMtp1ObsLuEDuirArI","p:domain_verify":"87b5ca26c36438b20581a102dc290a47","yandex-verification":"0eb3e2a9157fd34d","miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BlogPosting","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#blogposting","name":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD","headline":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples","author":{"@id":"https:\/\/afzalbadshah.com\/index.php\/author\/afzalbadshah-com\/#author"},"publisher":{"@id":"https:\/\/afzalbadshah.com\/#person"},"image":{"@type":"ImageObject","url":"https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg?fit=1920%2C1080&ssl=1","width":1920,"height":1080},"datePublished":"2025-06-26T07:14:05+05:00","dateModified":"2025-09-08T10:34:38+05:00","inLanguage":"en-GB","mainEntityOfPage":{"@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#webpage"},"isPartOf":{"@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#webpage"},"articleSection":"Object Oriented Programing (OOP), classes, objects, OOP"},{"@type":"BreadcrumbList","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com#listItem","position":1,"name":"Home","item":"https:\/\/afzalbadshah.com","nextItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/#listItem","name":"Courses"}},{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/#listItem","position":2,"name":"Courses","item":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/","nextItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/#listItem","name":"Object Oriented Programing (OOP)"},"previousItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/#listItem","position":3,"name":"Object Oriented Programing (OOP)","item":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/","nextItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#listItem","name":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples"},"previousItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/#listItem","name":"Courses"}},{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#listItem","position":4,"name":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples","previousItem":{"@type":"ListItem","@id":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/#listItem","name":"Object Oriented Programing (OOP)"}}]},{"@type":"Person","@id":"https:\/\/afzalbadshah.com\/#person","name":"Afzal Badshah, PhD","image":{"@type":"ImageObject","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#personImage","url":"https:\/\/afzalbadshah.com\/wp-content\/litespeed\/avatar\/27d3d5e33aa81b3152e368c66871f22f.jpg?ver=1787150587","width":96,"height":96,"caption":"Afzal Badshah, PhD"}},{"@type":"Person","@id":"https:\/\/afzalbadshah.com\/index.php\/author\/afzalbadshah-com\/#author","url":"https:\/\/afzalbadshah.com\/index.php\/author\/afzalbadshah-com\/","name":"Afzal Badshah, PhD","image":{"@type":"ImageObject","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#authorImage","url":"https:\/\/afzalbadshah.com\/wp-content\/litespeed\/avatar\/27d3d5e33aa81b3152e368c66871f22f.jpg?ver=1787150587","width":96,"height":96,"caption":"Afzal Badshah, PhD"}},{"@type":"WebPage","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#webpage","url":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/","name":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD","description":"Programming is about solving real-life problems. Imagine you're designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the","inLanguage":"en-GB","isPartOf":{"@id":"https:\/\/afzalbadshah.com\/#website"},"breadcrumb":{"@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#breadcrumblist"},"author":{"@id":"https:\/\/afzalbadshah.com\/index.php\/author\/afzalbadshah-com\/#author"},"creator":{"@id":"https:\/\/afzalbadshah.com\/index.php\/author\/afzalbadshah-com\/#author"},"image":{"@type":"ImageObject","url":"https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg?fit=1920%2C1080&ssl=1","@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#mainImage","width":1920,"height":1080},"primaryImageOfPage":{"@id":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/#mainImage"},"datePublished":"2025-06-26T07:14:05+05:00","dateModified":"2025-09-08T10:34:38+05:00"},{"@type":"WebSite","@id":"https:\/\/afzalbadshah.com\/#website","url":"https:\/\/afzalbadshah.com\/","name":"Afzal Badshah, PhD","alternateName":"Afzal Badshah","description":"Unlocking Mastery in Parenting, Teaching, Learning, Academic, and Life Skills: Your Guide to Excellence","inLanguage":"en-GB","publisher":{"@id":"https:\/\/afzalbadshah.com\/#person"}}]},"og:locale":"en_GB","og:site_name":"Afzal Badshah, PhD - Unlocking Mastery in Parenting, Teaching, Learning, Academic, and Life Skills: Your Guide to Excellence","og:type":"article","og:title":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD","og:description":"Programming is about solving real-life problems. Imagine you're designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the","og:url":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/","og:image":"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg","og:image:secure_url":"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg","og:image:width":1920,"og:image:height":1080,"article:published_time":"2025-06-26T02:14:05+00:00","article:modified_time":"2025-09-08T05:34:38+00:00","article:publisher":"https:\/\/web.facebook.com\/abmanduri\/","twitter:card":"summary_large_image","twitter:site":"@DrAFZALBADSHAH","twitter:title":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples - Afzal Badshah, PhD","twitter:description":"Programming is about solving real-life problems. Imagine you're designing a software to manage a car showroom, or a student database. In both cases, you deal with real-world entities like cars and students. Each of these has data (like name, color, roll number) and behavior (like start the car, register a course). You can visit the","twitter:creator":"@DrAFZALBADSHAH","twitter:image":"https:\/\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg","twitter:label1":"Written by","twitter:data1":"Afzal Badshah, PhD","twitter:label2":"Est. reading time","twitter:data2":"3 minutes"},"aioseo_meta_data":{"post_id":"6329","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"Classes and Objects","score":60,"analysis":{"keyphraseInTitle":{"score":9,"maxScore":9,"error":0},"keyphraseInDescription":{"score":9,"maxScore":9,"error":0},"keyphraseLength":{"score":9,"maxScore":9,"error":0,"length":3},"keyphraseInURL":{"score":5,"maxScore":5,"error":0},"keyphraseInIntroduction":{"score":3,"maxScore":9,"error":1},"keyphraseInSubHeadings":{"score":3,"maxScore":9,"error":1},"keyphraseInImageAlt":{"score":3,"maxScore":9,"error":1},"keywordDensity":{"score":0,"type":"low","maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"titles":[],"descriptions":[],"socialPosts":{"email":[],"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2025-06-26 02:03:25","updated":"2025-09-08 05:40:20","focus_keyword":"Classes and Objects","additional_keywords":null,"truseo_locale":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/afzalbadshah.com\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/\" title=\"Courses\">Courses<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/\" title=\"Object Oriented Programing (OOP)\">Object Oriented Programing (OOP)<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tClasses and Objects in Java: Beginner\u2019s Guide with Real-Life Examples\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/afzalbadshah.com"},{"label":"Courses","link":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/"},{"label":"Object Oriented Programing (OOP)","link":"https:\/\/afzalbadshah.com\/index.php\/category\/courses\/object-oriented-programing-oop\/"},{"label":"Classes and Objects in Java: Beginner\u2019s Guide with Real-Life Examples","link":"https:\/\/afzalbadshah.com\/index.php\/2025\/06\/26\/classes-and-objects-in-java-beginners-guide-with-real-life-examples\/"}],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/afzalbadshah.com\/wp-content\/uploads\/2025\/06\/Copy-of-OOP.jpg?fit=1920%2C1080&ssl=1","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pf3emP-1E5","jetpack-related-posts":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/posts\/6329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/comments?post=6329"}],"version-history":[{"count":3,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/posts\/6329\/revisions"}],"predecessor-version":[{"id":7025,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/posts\/6329\/revisions\/7025"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/media\/6332"}],"wp:attachment":[{"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/media?parent=6329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/categories?post=6329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afzalbadshah.com\/index.php\/wp-json\/wp\/v2\/tags?post=6329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}