{"id":16806,"date":"2025-10-10T06:29:21","date_gmt":"2025-10-10T06:29:21","guid":{"rendered":"https:\/\/www.kaashivinfotech.com\/blog\/?p=16806"},"modified":"2025-10-10T06:29:21","modified_gmt":"2025-10-10T06:29:21","slug":"abstract-classes-in-java","status":"publish","type":"post","link":"https:\/\/www.kaashivinfotech.com\/blog\/abstract-classes-in-java\/","title":{"rendered":"Abstract Classes in Java: 7 Essential Things You Must Know to Master Java OOP"},"content":{"rendered":"<p data-start=\"85\" data-end=\"528\">If you\u2019ve been diving into object-oriented programming <a href=\"https:\/\/www.wikitechy.com\/tutorials\/java\/java-classes-and-objects\" target=\"_blank\" rel=\"noopener\">(OOP) in Java<\/a>, then you\u2019ve probably come across the term abstract classes at some point. At first glance, they might sound like an advanced concept, but once you get the hang of them, abstract classes are actually pretty easy to understand. In this post, I\u2019ll break down abstract classes in Java, share my own experiences, and give you some practical tips to help you master them.<\/p>\n<p data-start=\"530\" data-end=\"621\">So, let\u2019s start with the basics and explore why abstract classes are so crucial in <a href=\"https:\/\/www.wikitechy.com\/tutorials\/java\/java-classes-and-objects\" target=\"_blank\" rel=\"noopener\">Java<\/a>.<\/p>\n<hr data-start=\"623\" data-end=\"626\" \/>\n<h3 data-start=\"628\" data-end=\"647\">Key Highlights:<\/h3>\n<ul data-start=\"649\" data-end=\"1064\">\n<li data-start=\"649\" data-end=\"697\">\n<p data-start=\"651\" data-end=\"697\">What exactly are abstract classes in Java?<\/p>\n<\/li>\n<li data-start=\"698\" data-end=\"759\">\n<p data-start=\"700\" data-end=\"759\">The difference between abstract classes and interfaces.<\/p>\n<\/li>\n<li data-start=\"760\" data-end=\"812\">\n<p data-start=\"762\" data-end=\"812\">When should you use an abstract class in Java?<\/p>\n<\/li>\n<li data-start=\"813\" data-end=\"884\">\n<p data-start=\"815\" data-end=\"884\">Why abstract classes matter in object-oriented programming (OOP).<\/p>\n<\/li>\n<li data-start=\"885\" data-end=\"951\">\n<p data-start=\"887\" data-end=\"951\">Common mistakes to avoid when working with abstract classes.<\/p>\n<\/li>\n<li data-start=\"952\" data-end=\"1006\">\n<p data-start=\"954\" data-end=\"1006\">A hands-on coding example with abstract classes.<\/p>\n<\/li>\n<li data-start=\"1007\" data-end=\"1064\">\n<p data-start=\"1009\" data-end=\"1064\">How abstract classes fit into larger Java projects.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"1066\" data-end=\"1069\" \/>\n<h2 data-start=\"1071\" data-end=\"1113\"><strong data-start=\"1075\" data-end=\"1113\">What Are Abstract Classes in Java?<\/strong><\/h2>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-16808 \" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java.webp\" alt=\"\" width=\"518\" height=\"277\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java.webp 879w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-300x160.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-768x411.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-380x203.webp 380w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-800x428.webp 800w\" sizes=\"(max-width: 518px) 100vw, 518px\" \/><\/p>\n<p data-start=\"1115\" data-end=\"1388\">Abstract classes in Java are classes that cannot be instantiated directly. In simple terms, you cannot create an object of an abstract class. Instead, abstract classes are meant to be extended by other classes. They serve as blueprints for subclasses to build upon.<\/p>\n<p data-start=\"1390\" data-end=\"1666\">Here\u2019s the catch: abstract classes can contain both abstract methods (methods without a body) and concrete methods (methods with a body). This allows you to define a general structure for other classes while still providing the flexibility for specific implementation details.<\/p>\n<h3 data-start=\"1668\" data-end=\"1688\">A Quick Example:<\/h3>\n<p data-start=\"1690\" data-end=\"2063\">Let\u2019s say you\u2019re building a program for managing different types of animals, like cats and dogs. The abstract class Animal would provide the structure for all animals, with general methods like <code class=\"\" data-line=\"\">makeSound()<\/code> and <code class=\"\" data-line=\"\">eat()<\/code>. Then, Dog and Cat would be subclasses that extend <code class=\"\" data-line=\"\">Animal<\/code> and implement the specific details (like <code class=\"\" data-line=\"\">bark()<\/code> for dogs or <code class=\"\" data-line=\"\">meow()<\/code> for cats).<\/p>\n<p data-start=\"2065\" data-end=\"2108\">Here\u2019s a quick look at how that might work:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\">abstract class Animal {\r\n    \/\/ Abstract method (no implementation)\r\n    public abstract void makeSound();\r\n    \r\n    \/\/ Concrete method (with implementation)\r\n    public void eat() {\r\n        System.out.println(\"This animal is eating.\");\r\n    }\r\n}\r\n\r\nclass Dog extends Animal {\r\n    @Override\r\n    public void makeSound() {\r\n        System.out.println(\"Woof!\");\r\n    }\r\n}\r\n\r\nclass Cat extends Animal {\r\n    @Override\r\n    public void makeSound() {\r\n        System.out.println(\"Meow!\");\r\n    }\r\n}\r\n<\/pre>\n<p>Notice how <code class=\"\" data-line=\"\">Dog<\/code> and <code class=\"\" data-line=\"\">Cat<\/code> both <strong data-start=\"2630\" data-end=\"2641\">inherit<\/strong> from <code class=\"\" data-line=\"\">Animal<\/code> but provide their own versions of <code class=\"\" data-line=\"\">makeSound()<\/code>. Meanwhile, they share the <code class=\"\" data-line=\"\">eat()<\/code> method, which is implemented in the abstract class itself.<\/p>\n<h2 data-start=\"2805\" data-end=\"2846\"><strong data-start=\"2809\" data-end=\"2846\">Why Use Abstract Classes in Java?<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-16809 \" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java.webp\" alt=\"\" width=\"423\" height=\"313\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java.webp 1701w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-300x222.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-1024x757.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-768x568.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-1536x1135.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-380x281.webp 380w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-800x591.webp 800w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/why-do-we-need-an-abstract-class-in-java-1160x857.webp 1160w\" sizes=\"(max-width: 423px) 100vw, 423px\" \/><\/p>\n<p data-start=\"2848\" data-end=\"3012\">You might be wondering, \u201cOkay, but why not just use interfaces or concrete classes?\u201d Well, let me tell you that abstract classes serve a unique purpose in Java.<\/p>\n<ol data-start=\"3014\" data-end=\"3705\">\n<li data-start=\"3014\" data-end=\"3249\">\n<p data-start=\"3017\" data-end=\"3249\"><strong data-start=\"3017\" data-end=\"3037\">Code Reusability<\/strong>: Abstract classes allow you to define methods that will be common across many subclasses. You don\u2019t have to rewrite the same code over and over again. This helps you <strong data-start=\"3204\" data-end=\"3211\">DRY<\/strong> (Don&#8217;t Repeat Yourself) up your code.<\/p>\n<\/li>\n<li data-start=\"3254\" data-end=\"3471\">\n<p data-start=\"3257\" data-end=\"3471\"><strong data-start=\"3257\" data-end=\"3279\">Provide a Template<\/strong>: If you have a series of related classes, an abstract class provides a blueprint. It forces subclasses to implement certain methods, ensuring consistency while leaving room for customization.<\/p>\n<\/li>\n<li data-start=\"3473\" data-end=\"3705\">\n<p data-start=\"3476\" data-end=\"3705\"><strong data-start=\"3476\" data-end=\"3491\">Flexibility<\/strong>: Sometimes, you need a little bit of both worlds \u2014 some shared code (concrete methods) and some code that must be implemented by the subclass (abstract methods). Abstract classes strike this balance perfectly.<\/p>\n<\/li>\n<\/ol>\n<hr data-start=\"3707\" data-end=\"3710\" \/>\n<h2 data-start=\"3712\" data-end=\"3772\"><strong data-start=\"3716\" data-end=\"3772\">Abstract Class vs Interface: What\u2019s the Difference?<\/strong><\/h2>\n<p data-start=\"3774\" data-end=\"4041\">I know this is a common question, and honestly, it confused me when I was first learning Java. Here\u2019s the thing: abstract classes and interfaces might seem similar because they both define methods that subclasses must implement, but they have key differences:<\/p>\n<ul data-start=\"4043\" data-end=\"4402\">\n<li data-start=\"4043\" data-end=\"4225\">\n<p data-start=\"4045\" data-end=\"4066\"><strong data-start=\"4045\" data-end=\"4065\">Abstract Classes<\/strong>:<\/p>\n<ul data-start=\"4069\" data-end=\"4225\">\n<li data-start=\"4069\" data-end=\"4115\">\n<p data-start=\"4071\" data-end=\"4115\">Can have both abstract and concrete methods.<\/p>\n<\/li>\n<li data-start=\"4118\" data-end=\"4157\">\n<p data-start=\"4120\" data-end=\"4157\">Can have instance variables (fields).<\/p>\n<\/li>\n<li data-start=\"4160\" data-end=\"4222\">\n<p data-start=\"4162\" data-end=\"4222\">Can have constructors (although they can\u2019t be instantiated).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"4226\" data-end=\"4402\">\n<p data-start=\"4228\" data-end=\"4243\"><strong data-start=\"4228\" data-end=\"4242\">Interfaces<\/strong>:<\/p>\n<ul data-start=\"4246\" data-end=\"4402\">\n<li data-start=\"4246\" data-end=\"4336\">\n<p data-start=\"4248\" data-end=\"4336\">Can only have abstract methods (up until Java 8, now they can have default methods too).<\/p>\n<\/li>\n<li data-start=\"4339\" data-end=\"4372\">\n<p data-start=\"4341\" data-end=\"4372\">Cannot have instance variables.<\/p>\n<\/li>\n<li data-start=\"4375\" data-end=\"4402\">\n<p data-start=\"4377\" data-end=\"4402\">Cannot have constructors.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p data-start=\"4404\" data-end=\"4663\">For example, think of an abstract class like Animal that has both general methods and abstract ones, while an interface could be like Flyable or Swimmable, which can be implemented by any class that needs to provide the ability to fly or swim.<\/p>\n<p data-start=\"4404\" data-end=\"4663\"><img decoding=\"async\" class=\"aligncenter wp-image-16810 \" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface.webp\" alt=\"\" width=\"445\" height=\"268\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface.webp 1838w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-300x180.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-1024x617.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-768x463.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-1536x926.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-380x229.webp 380w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-560x336.webp 560w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-800x482.webp 800w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/abstract_class-vs-interface-1160x699.webp 1160w\" sizes=\"(max-width: 445px) 100vw, 445px\" \/><\/p>\n<hr data-start=\"4665\" data-end=\"4668\" \/>\n<h2 data-start=\"4670\" data-end=\"4723\"><strong data-start=\"4674\" data-end=\"4723\">When Should You Use Abstract Classes in Java?<\/strong><\/h2>\n<p data-start=\"4725\" data-end=\"4841\">Here are a few scenarios where you\u2019d want to go for abstract classes rather than interfaces or concrete classes:<\/p>\n<ul data-start=\"4843\" data-end=\"5252\">\n<li data-start=\"4843\" data-end=\"4997\">\n<p data-start=\"4845\" data-end=\"4997\"><strong data-start=\"4845\" data-end=\"4883\">When you have common functionality<\/strong> that should be shared across multiple classes, but you still want to leave some methods for subclasses to define.<\/p>\n<\/li>\n<li data-start=\"4998\" data-end=\"5145\">\n<p data-start=\"5000\" data-end=\"5145\"><strong data-start=\"5000\" data-end=\"5040\">When you want to limit instantiation<\/strong> of the class itself, meaning no one can create an object of that class directly (because it\u2019s abstract).<\/p>\n<\/li>\n<li data-start=\"5146\" data-end=\"5252\">\n<p data-start=\"5148\" data-end=\"5252\"><strong data-start=\"5148\" data-end=\"5194\">When you need to maintain a consistent API<\/strong> but still allow subclasses to add specific functionality.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5254\" data-end=\"5508\"><strong data-start=\"5254\" data-end=\"5265\">Example<\/strong>: If you\u2019re creating a class for <code class=\"\" data-line=\"\">Vehicle<\/code>, but you don\u2019t want someone to accidentally create a generic <code class=\"\" data-line=\"\">Vehicle<\/code> object, you can make it abstract. Then, <code class=\"\" data-line=\"\">Car<\/code>, <code class=\"\" data-line=\"\">Truck<\/code>, <code class=\"\" data-line=\"\">Motorcycle<\/code>, etc., will extend it and provide their own implementations.<\/p>\n<hr data-start=\"5510\" data-end=\"5513\" \/>\n<h2 data-start=\"5515\" data-end=\"5569\"><strong data-start=\"5519\" data-end=\"5569\">Common Mistakes to Avoid with Abstract Classes<\/strong><\/h2>\n<p data-start=\"5571\" data-end=\"5697\">While working with abstract classes, I\u2019ve made my fair share of mistakes. Here are some common traps you\u2019ll want to avoid:<\/p>\n<ol data-start=\"5699\" data-end=\"6363\">\n<li data-start=\"5699\" data-end=\"5926\">\n<p data-start=\"5702\" data-end=\"5926\"><strong data-start=\"5702\" data-end=\"5746\">Forgetting to Implement Abstract Methods<\/strong>: When you extend an abstract class, you must implement all the abstract methods unless your subclass is abstract as well. Forgetting to do this will result in a compilation error.<\/p>\n<\/li>\n<li data-start=\"5928\" data-end=\"6114\">\n<p data-start=\"5931\" data-end=\"6114\"><strong data-start=\"5931\" data-end=\"5972\">Using Abstract Classes for Everything<\/strong>: Not everything needs to be abstract. Use them when you have a good reason \u2014 like code reuse, enforcing structure, or limiting instantiation.<\/p>\n<\/li>\n<li data-start=\"6116\" data-end=\"6363\">\n<p data-start=\"6119\" data-end=\"6363\"><strong data-start=\"6119\" data-end=\"6146\">Overcomplicating Things<\/strong>: You don\u2019t need to make every class abstract. Only use <strong data-start=\"6202\" data-end=\"6222\">abstract classes<\/strong> when it really makes sense. If you\u2019re not sharing common functionality across multiple subclasses, an abstract class might not be necessary.<\/p>\n<\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16811 \" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1.webp\" alt=\"\" width=\"501\" height=\"282\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1.webp 1600w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-300x169.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-1024x576.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-768x432.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-1536x864.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-380x214.webp 380w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-800x450.webp 800w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/10\/Abstract-Class-in-Java-1-1160x653.webp 1160w\" sizes=\"(max-width: 501px) 100vw, 501px\" \/><\/p>\n<hr data-start=\"6365\" data-end=\"6368\" \/>\n<h2 data-start=\"6370\" data-end=\"6425\"><strong data-start=\"6374\" data-end=\"6425\">A Real-Life Example of Abstract Classes in Java<\/strong><\/h2>\n<p data-start=\"6427\" data-end=\"6625\">Let\u2019s consider a real-life example: building a <strong data-start=\"6474\" data-end=\"6492\">payment system<\/strong>. In this case, we can have an abstract class <code class=\"\" data-line=\"\">PaymentMethod<\/code>, which might define methods like <code class=\"\" data-line=\"\">processPayment()<\/code>, <code class=\"\" data-line=\"\">validate()<\/code>, etc.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"java\">abstract class PaymentMethod {\r\n    \/\/ Abstract method to be implemented by subclasses\r\n    public abstract void processPayment(double amount);\r\n\r\n    \/\/ Concrete method\r\n    public void validate() {\r\n        System.out.println(\"Payment method validated.\");\r\n    }\r\n}\r\n\r\nclass CreditCardPayment extends PaymentMethod {\r\n    @Override\r\n    public void processPayment(double amount) {\r\n        System.out.println(\"Processing credit card payment of $\" + amount);\r\n    }\r\n}\r\n\r\nclass PayPalPayment extends PaymentMethod {\r\n    @Override\r\n    public void processPayment(double amount) {\r\n        System.out.println(\"Processing PayPal payment of $\" + amount);\r\n    }\r\n}\r\n<\/pre>\n<p>In this example, we can create various types of payment methods (like CreditCardPayment and PayPalPayment), and each one will implement the <code class=\"\" data-line=\"\">processPayment()<\/code> method, while still benefiting from the shared <code class=\"\" data-line=\"\">validate()<\/code> method in the abstract class.<\/p>\n<h2 data-start=\"7536\" data-end=\"7554\"><strong data-start=\"7540\" data-end=\"7554\">Conclusion<\/strong><\/h2>\n<p data-start=\"7556\" data-end=\"7848\">Understanding abstract base classe in Java is an essential part of mastering object-oriented programming. Whether you\u2019re designing a system that needs shared functionality or enforcing a consistent API across related classes, abstract classes can help you structure your code efficiently.<\/p>\n<p data-start=\"7850\" data-end=\"8070\">When used properly, they can save you time, reduce redundancy, and ensure your code is flexible and maintainable. So, next time you\u2019re working on a Java project, ask yourself: <em data-start=\"8026\" data-end=\"8070\">Could this benefit from an abstract class?<\/em><\/p>\n<p data-start=\"8072\" data-end=\"8304\">I hope this post helped clear up what abstract classes are and why they matter.<\/p>\n<p data-start=\"8072\" data-end=\"8304\">Kaashiv Infotech Offers <a href=\"https:\/\/www.kaashivinfotech.com\/java-full-stack-developer\/\">Full Stack Java Developer Course<\/a>, <a href=\"https:\/\/internship.kaashivinfotech.com\/java-internship\/\">Java Internship<\/a> &amp; More Programming Courses Visit Our Website <a href=\"https:\/\/www.kaashivinfotech.com\/courses\/\">www.kaashivinfotech.com<\/a>.<\/p>\n<h2 data-start=\"8072\" data-end=\"8304\">Related Reads:<\/h2>\n<ul>\n<li>\n<p class=\"entry-title\"><a href=\"https:\/\/www.kaashivinfotech.com\/blog\/design-patterns-in-csharp-java-2025\/\">Design Patterns in C# &amp; Java (2025 Guide) \u2013 With Code Examples, UML &amp; Best Practices<\/a><\/p>\n<\/li>\n<li>\n<p class=\"entry-title\"><a href=\"https:\/\/www.kaashivinfotech.com\/blog\/5-java-software-design-patterns\/\">5 Creational Design Patterns in Java Software Design Patterns (Explained With Real Examples)<\/a><\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>If you\u2019ve been diving into object-oriented programming (OOP) in Java, then you\u2019ve probably come across the term abstract classes at some point. At first glance, they might sound like an advanced concept, but once you get the hang of them, abstract classes are actually pretty easy to understand. In this post, I\u2019ll break down abstract [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":16813,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3356,3203],"tags":[9734,9733,9730,9735,9732,9731,9729,9736],"class_list":["post-16806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","category-programming","tag-abstract-class-example-in-java","tag-abstract-class-vs-interface-in-java","tag-abstract-classes-in-java-w3schools","tag-abstract-in-java","tag-abstract-method-in-java","tag-interface-in-java","tag-types-of-abstract-classes-in-java","tag-what-is-abstract-class-in-c"],"_links":{"self":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts\/16806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/comments?post=16806"}],"version-history":[{"count":0,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts\/16806\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/media\/16813"}],"wp:attachment":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/media?parent=16806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/categories?post=16806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/tags?post=16806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}