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Java Parameterized Constructor Quiz

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Questions and Answers

In Java programming, what is the purpose of a constructor?

Provide data for the object at the time of its creation (correct)

Perform operations that are not possible within regular methods

Allocate memory for objects during run-time

Initialize the values of variables at any point during the program execution

Which Java programming element is responsible for initializing the internal state of an object?

Method

Encapsulation

Constructor (correct)

Control Structures

How does polymorphism manifest in Java?

By changing the data type of a variable at runtime

By changing the behavior of methods based on the calling object's type (correct)

By restricting access to class members from outside the class

By allowing objects of different classes to be treated as objects of the same class

What is the purpose of a parameterized constructor in Java?

To provide different values to different objects of a class Signup and view all the answers

How does constructor overloading work in Java?

By creating constructors with the same name but different argument lists Signup and view all the answers

In the provided Java code, what will be the output of the 'main' method?

111 Karan Signup and view all the answers

What is the implicit return type of a class constructor, according to the text?

The class type itself Signup and view all the answers

In Java, what happens if a class has no constructor defined?

Compiler automatically creates a default constructor Signup and view all the answers

What is the purpose of a default constructor in Java?

To initialize all instance variables to their default values Signup and view all the answers

What does the text imply about the return type of Java constructors?

Constructors cannot have a return type Signup and view all the answers