![]() This helps in reducing complexity by allowing the same interface to be used to specify a general class of action. Polymorphism allows us to design a generic interface for a group of related activities. In general, polymorphism means one interface with multiple methods. The specific action is determined by the exact nature of the situation. The two most common reasons to use inheritance are: To promote code reuse and to use polymorphism.Īns: Polymorphism is a feature that allows a single interface to be used for the general class of actions.Inheritance is done by using the keyword extends.The class that inherits properties from its superclass is called a subclass.A class that is inherited is called the superclass.A new sub-class inherits all of the attributes of all of its ancestors. An object can inherit its general attributes from its parent. This supports the hierarchical classification. An object-oriented program can be characterized as data controlling access to the code.Īns: The basic principles of Object-Oriented Programming Structure (OOPS) are:Īns: Encapsulation is the technique to wrap-up data and its associated methods into a single unit.Īns: Inheritance is a technique to make one object acquiring the properties of another object. the objects and a set of well-defined interfaces to that data. Object-oriented programming organizes a program around its data, i. ![]() Each object is an instance of a class, and each class belongs to a hierarchy. Why constructors cannot be final, static, or abstract in Java?Īns: OOP is a method of programming in which the programs are organized as cooperative collections of objects.What is the value returned by Constructor in Java?.Why do we need default constructor in Java classes?.In Java, what is the default value of an object reference defined as an instance variable in an Object?.What is the difference between Object Oriented Programming language and Object-Based Programming language?.What are the main principles of Object Oriented Programming?.Method Overriding Questions Object Oriented Programming Interview Questions
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