Make your choice by clicking on its button. Java All-in-One for Dummies: Check Price: 4. The results are not recorded anywhere and do not affect your grade. Did you mean Computer[] labComputers = new Notebook; in the last line of code? You can print these Questions in … C. "X extends Y" is correct if X and Y are either both classes or both interfaces. 2) Multiple inheritance is not allowed in Java. Reason being named so, due to the fact that functionality of method is dynamically decided in run time as per the obje… However, in the runtime, JVM figures out the object type and would run the method that belongs to … Next Page . share | improve this question | follow | edited Oct 14 '12 at 3:09. The most common use of polymorphism in OOP occurs when a parent class reference is used to refer to a child class object. In Java, polymorphism is a concept of object-oriented programming that allows us to perform a single action in different forms. So the term polymorphism indicates the same thing of different types. Runtime Polymorphism in Java. D. January 16, 2020 March 11, 2019 by Rakesh Singh (Last Updated On: January 16, 2020) ULTIMATE MCQs – Multiple Choice Questions on Porlymorphism in java oops concept with Answer and Explanation to polish your concepts and help in written test in job interviews. Introduction to Runtime Polymorphism in Java. java … You can read interface with example in java programming in detail. Our 1000+ Java questions and answers focuses on all areas of Java subject covering 100+ topics in Java. 2. MCQ- Java multithreading multiple choice questions with answers and explanation. Q) Which feature comes under compile time polymorphism? Compilation is the process of converting the code into a language that is – a. 47.7k 20 20 gold badges 85 85 silver badges 139 139 bronze badges. 1) In Java all classes inherit from the Object class directly or indirectly. Java is purely object-oriented and provides – a. Abstraction, inheritance b. Encapsulation, polymorphism c. Abstraction, polymorphism d. All of the above Ans. Method Overriding in Java – This is an example of runtime time (or dynamic polymorphism) 3. If you overload a static method in Java, it is the example of compile time polymorphism. A. Machine language c. High-level language d. Low-level language Ans. Explanation: There are two types of polymorphism in Java. Contains a lot of questions to practice and to improve your Knowledge skills in Java for exam preparation. 3,173 15 15 gold badges 56 56 silver badges 88 88 bronze badges. Method Overloading in Java – This is an example of compile time (or static polymorphism) 2. In method overriding, a subclass overrides a method with the same signature as that of in its superclass. Next Page . I am delighted we are getting into the more complicated tasks in the intermediate series of videos. It is when a single variable is used with several different types of related objects at different places in a program. Q) Which method of base class X, the derived class Y cannon override? C. It is when a single parent class has many child classes. The questions on this quiz might not appear in any quiz or test that does count toward your grade. We hope that these Java MCQ Questions will help you to crack your next Java interview. Rakesh Singh is a highly experienced IT professional & International Published Author…Read more. 7. Compile time polymorphism (overloading) and runtime polymorphism (overriding). Our 1000+ Java questions and answers focuses on all areas of Java subject covering 100+ topics in Java. A. The most common use of polymorphism in OOP occurs when a parent class reference is used to refer to a child class object. Compile time polymorphism (overloading) and runtime polymorphism (overriding). Java classes a person at the same signature as that of in its.... 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