JAVA MCQ QUESTIONS AND ANSWERS PDF

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Core Java objective type questions with answers and explanation (MCQs) for job interview and placement tests. This Core Java online test is useful for. Java Multiple Choice Questions. Dept of Computer Science .. 22) Which of the following features are common to both Java & C++?. reffirodonverm.gq class declaration b. Java Programming questions and answers with explanation for interview, competitive download Java Programming quiz questions with answers as PDF files and eBooks. Interview Questions and Answers (objective type, multiple choice)?.


Java Mcq Questions And Answers Pdf

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Java Multiple Choice Questions And Answers Here is a list of 60 core java and advanced java mcq questions and answers for freshers. + Multiple Choice Questions & Answers in Java with explanations – Every MCQ set focuses on a specific topic in Java Subject. Who should Practice these. Java Programming questions and answers with explanation for interview, competitive examination and entrance test. Fully solved examples with detailed.

A e 50 In object-oriented programming, the process by which one object acquires the properties of another object is called a Encapsulation b Polymorphism c Overloading d Inheritance e Overriding. A c 53 Consider the following statements about Java packages: I. Packages provide a visibility control mechanism.

One of the important properties of a package is that all classes defined inside a package is accessible by code outside that package. Which of them is correct?

A b 54 Consider the following statements: I. A class can be declared as both abstract and final.

A class declared as final can be extended by defining a sub-class. The Package provides easier access control.

MCQ on Java Programming Language Fundamental

We can also have the hidden classes that are not visible outside and used by the package. It is easier to locate the related classes. Now, their sum 30 is treated as the string and concatenated with the string Javatpoint.

Therefore, the output will be 30Javatpoint.

String is the predefined

In the second case, the string Javatpoint is concatenated with 10 to be the string Javatpoint10 which will then be concatenated with 20 to be Javatpoint In the second case, The numbers 10 and 20 will be multiplied first to be because the precedence of the multiplication is higher than addition. The result will be treated as the string and concatenated with the string Javatpointto produce the output as Javatpoint However, they have been categorized in many sections such as constructor interview questions, static interview questions, Inheritance Interview questions, Abstraction interview question, Polymorphism interview questions, etc.

It is a programming paradigm based on objects having data and methods defined in the class to which it belongs. Object-oriented paradigm aims to incorporate the advantages of modularity and reusability.

Objects are the instances of classes which interacts with one another to design applications and programs. There are the following features of the object-oriented paradigm. Follows the bottom-up approach in program design. Focus on data with methods to operate upon the object's data Includes the concept like Encapsulation and abstraction which hides the complexities from the user and show only functionality.

Implements the real-time approach like inheritance, abstraction, etc. The Object is the real-time entity having some state and behavior. In Java, Object is an instance of the class having the instance variables as the state of the object and the methods as the behavior of the object.

The object of a class can be created by using the new keyword. There are the following basic differences between the object-oriented language and object-based language.

Core Java: Basics of Java Interview Questions

Object-oriented languages follow all the concepts of OOPs whereas, the object-based language doesn't follow all the concepts of OOPs like inheritance and polymorphism. Object-oriented languages do not have the inbuilt objects whereas Object-based languages have the inbuilt objects, for example, JavaScript has window object.

Examples of object-oriented programming are Java, C , Smalltalk, etc. All object references are initialized to null in Java. The constructor can be defined as the special type of method that is used to initialize the state of an object. It is invoked when the class is instantiated, and the memory is allocated for the object.

Every time, an object is created using the new keyword, the default constructor of the class is called. The name of the constructor must be similar to the class name.

The constructor must not have an explicit return type. Based on the parameters passed in the constructors, there are two types of constructors in Java.

Default Constructor: default constructor is the one which does not accept any value. The default constructor is mainly used to initialize the instance variable with the default values.

Which of them is correct? A b 54 Consider the following statements: I. A class can be declared as both abstract and final.

A class declared as final can be extended by defining a sub-class. Resolving calls to methods dynamically at run-time is called late binding. The class Object defined by Java need not be a super class of all other classes.

A b 56 Consider the following statement s about Java: I.

All white-space characters blanks are ignored by the compiler.An array can hold primitive types data b. It is a programming paradigm based on objects having data and methods defined in the class to which it belongs.

30 TOP CORE JAVA MULTIPLE CHOICE QUESTIONS AND ANSWERS PDF

Object-oriented paradigm aims to incorporate the advantages of modularity and reusability. This page provides a great collection of Java Questions on a single page along with their correct answers and explanations. Strings Questions and Answers 1.

Therefore, the college name will be defined as static. Java is executed on the top of other hardware platforms whereas other platforms can only have the hardware components.