![]() ![]() ![]() How does multiple inheritance implement in Java? Therefore, to reduce ambiguity, complexity, and confusion, Java does not support multiple inheritance through class.įor more detail, go to this tutorial: Types of Inheritance in Javaġ5. At most, one class can extend only one class. □ Multiple inheritance means that one class extends two superclasses or base classes but in Java, one class cannot extend more than one class simultaneously. Why Java does not support multiple inheritance through class? Due to reducing the length of the code, redundancy of the application is also reduced.ġ4. One of the main advantages is that we can minimize the length of the duplicate code in an application by putting the common code in superclass and sharing amongst several subclasses.Ģ. □ The advantages of inheritance are as follows:ġ. It is used to achieve runtime polymorphism i.e method overriding.ġ3. Inheritance is used to use the existing features of the class.ĭ. Using inheritance, we can increase features of class or method by overriding.Ĭ. We can reuse the code from the base class.ī. □ We use inheritance in java for the following reasons:Ī. Implements: implements keyword is used for developing the inheritance between a class and interface. □ Inheritance can be implemented or achieved by using two keywords:Įxtends: extends is a keyword that is used for developing the inheritance between two classes and two interfaces. How is Inheritance implemented/achieved in Java? ![]() □ Object class is the superclass of every other class in Java.ġ1. Which class in Java is super class of every other class? This is a very good example of Is-A relationship.ġ0. It is implemented using “extends” keyword. □ Is-A relationship represents inheritance. The existing class is called parent class and the new class is called child class. In other words, inheritance is a process where a child class acquires all the properties and behaviors of parent class. □ The technique of creating a new class by using an existing class functionality is called inheritance. □ A method that is used to retrieve/get the value of a variable or return the value of the private member variable is called getter method.Ī method that is used for updating or setting the value of a variable is called setter method. What is getter and setter method in Java? □ If we don’t use encapsulation in a program, fields will not be private and could be accessed by anyone from outside the class.ħ. What would happen if we do not use Encapsulation in a program? □ If each variable is declared as private in the class, it is called tightly encapsulated class in Java.Ħ. What is tightly encapsulated class in Java? □ Data hiding is a technique by which we prevent to access data members (variables) directly from outside the class so that we can achieve security on data.īy declaring data members (variables) as private, we can achieve or implement data hiding.ĥ. What is Data hiding in Java? How to achieve it programmatically? Provide the public setter and getter methods in the class to set/modify the value of variable.Ĥ. Declaring instance variable of class as private so that it cannot be accessed directly by anyone from outside the class.Ģ. □ There are two points thereby we can achieve or implement encapsulation in Java program.ġ. How to achieve or implement encapsulation in Java? □ The process of binding data and corresponding methods (behavior) together into a single unit is called encapsulation.ģ. Polymorphism: Using various methods with same name Inheritance: Using code written in a class inside other classes Selenium interview questionsīellow given links will take you to selenium webdriver interview questions with answers pages.ġ) PART 1, 2) PART 2, 3) PART 3, 4) PART 4, 5) PART 5,Ħ) PART 6, 7) PART 7, 8) PART 8, 9) PART 9, 10) Part 10,ġ1) Part 11,12) Part 12,13) Part 13,14) Part 14,15) Part 15,ġ6) Part 16,17) Part 17,18) Part 18,19) Part 19,20) Part 20, 21) Part 21,22) Part 22,23) Part 23,īellow given java interview questions will help you when you are attending selenium interview.ġ) PART 1, 2) PART 2, 3) PART 3, 4) PART 4, 5) PART 5,Ħ) PART 6, 7) PART 7, 8) PART 8, 9) PART 9, 10) Part 10,īellow given java interview questions will help you when you are attending Appium interview.Abstraction: Protecting data of a class from being accessed by members of another classĮncapsulation: Hiding data of class from other classes Create selenium webdriver data driven framework from scratch Page. ![]()
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