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Java Programming

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Questions and Answers

What is the purpose of the 'new' keyword in Java?

To initialize a variable with a new value

To declare a new class in the program

To define a new method in a class

To create a new object in memory (correct)

In Java, what is the default access modifier for instance variables?

Package-private (correct)

Private

Public

Protected

What is the role of a constructor in Java?

Returning a value from a method

Controlling access to class variables

Defining new methods in a class

Initializing the state of an object (correct)

How is an object created in Java?

Using the 'new' keyword followed by the class name and parentheses (D) Signup and view all the answers

What is the purpose of declaring a reference variable for an object in Java?

To refer to the memory location of the object (B) Signup and view all the answers

What is the purpose of the 'new' keyword in Java when creating an object?

Allocates memory for the object and returns a reference to it (A) Signup and view all the answers

What is the default access modifier for instance variables in the Person class?

Private (A) Signup and view all the answers

What does it mean to 'manipulate objects' in Java?

Performing operations on the object's instance variables (A) Signup and view all the answers

What is the role of a constructor in Java?

Initializing the object's instance variables (C) Signup and view all the answers

Why is it necessary to declare a reference variable for an object in Java?

To store the memory address of the object (B) Signup and view all the answers

Java Programming

Choose a study mode

Podcast

Questions and Answers

What is the purpose of the 'new' keyword in Java?

In Java, what is the default access modifier for instance variables?

What is the role of a constructor in Java?

How is an object created in Java?

What is the purpose of declaring a reference variable for an object in Java?

What is the purpose of the 'new' keyword in Java when creating an object?

What is the default access modifier for instance variables in the Person class?

What does it mean to 'manipulate objects' in Java?

What is the role of a constructor in Java?

Why is it necessary to declare a reference variable for an object in Java?

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