![]() What Is The Liskov Substitution Principle? You can also check why multiple inheritances are not supported in Java for more reasons and discussion around this. They think multiple inheritances is one of them which doesn’t justify complexity and confusion it introduces. Java is introduced after C++ and Java designer didn’t want to take some C++ feature which is confusing and not essential. Why Multiple Inheritance Is Not Supported By Java? A class extends another class using extends keyword, an interface can extend another interface using extend keyword, and a class can implement an interface using implements keyword in Java. You can use either extends of implements keyword to implement Inheritance in Java. A class which implements an interface is known as implementation. A class which is derived from another class is known as a subclass and an interface which is derived from another interface is called subinterface. Java provides two keywords extends and implements to achieve inheritance. You can use Inheritance in Java by extending classes and implementing interfaces. This feature allows one class to play a polymorphic role in the program. This is why the interface should be the best use for defining Type as described in Effective Java. A class can be both Comparable and Serializable at the same time. Yes, A class can implement more than one interface in Java e.g. ![]() Can A Class Implement More Than One Interface In Java? HashMap encapsulate how to store elements and how to calculate hash values. On the other hand, Encapsulation is an object oriented concept which is used to hide the internal details of a class e.g. It is one of the ways to reuse the code written for parent class but it also forms the basis of Polymorphism. Inheritance is an object oriented concept which creates a parent-child relationship. What Is The Difference Between Inheritance And Encapsulation? In fact, a private method is not visible to anyone outside the class and, more importantly, a call to the private method is resolved at compile time by using Type information as opposed to runtime by using the actual object. ![]() No, you cannot override a private method in Java because the private method is not inherited by the subclass in Java, which is essential for overriding. Can We Override A Private Method In Java? Polymorphism allows flexibility, you can choose which code to run at runtime by overriding. What Is The Difference Between Polymorphism And Inheritance?īoth Polymorphism and Inheritance goes hand on hand, they help each other to achieve their goal. Through Every class also, by default extend the class in Java. No, a class can only extend just one more class in Java. ![]() Can A Class Extends More Than One Class In Java? If you don’t know, Inheritance is the quick way to become rich. One of the most intuitive examples of Inheritance in the real world is Father-Son relationship, where Son inherit Father’s property. For example, a class Car can extend basic feature of Vehicle class by using Inheritance. Inheritance is an Object oriented feature which allows a class to inherit behavior and data from other class.
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