Welcome to the Interfaces and Packages MCQs Page

Dive deep into the fascinating world of Interfaces and Packages with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Interfaces and Packages, a crucial aspect of Java Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Interfaces and Packages, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Java Programming.

Check out the MCQs below to embark on an enriching journey through Interfaces and Packages. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Java Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Interfaces and Packages. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Interfaces and Packages MCQs | Page 11 of 12

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Q101.

When importing a Package, theClass isactually importing ____.

Classes or Interfaces from the package

Constants

Methods

None of the above

Discuss

Answer: (a).Classes or Interfaces from the package

Q102.

The package declaration statement should be the first statement in a Java file. State TRUE or FALSE.

TRUE

FALSE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (a).TRUE

Q103.

You can place a comment before the Package Declaration statement in Java. State TRUE or FALSE.

TRUE

FALSE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (a).TRUE

Q104.

How does JAVAC or JAVA (JVM) find the packages that will be used inside classes by an import statement?

If the packages are defined on the same root level as the compiling or running class file, Java knows it.

You should manually use the CLASSPATH or CP command to include the path of the package or single-class for compiling and running

You can copy the JAR files in LIB folder of Java inside Program Files

All the above

Discuss

Answer: (d).All the above

Q105.

Which is the default Java package that will be auto included (imported) in the classpath while Compiling and Running a Java program?

java.io

java.util

java.net

java.lang

Discuss

Answer: (d).java.lang

Q106.

What are the popular Classes or Interfaces inside a Java Language Pack (java.lang)?

Byte, Character, Short, Integer, Float, Long, Number

Math, String, StringBuffer, StringBuilder

Thread, Throwable, Exception, Error

All the above

Discuss

Answer: (d).All the above

Q107.

Choose a correct way of importing all the classes in the below java program with packages.

//Cat.java
package animals;
public class Cat { }

//Dog.java
package animals;
public class Dog { }

//PackageTesting.java
//import statements
public class
{
  //new Cat();
  //new Dog();
}

import animals.*;

import animals.cat;
import animals.Dog;

Both A and B

None

Discuss

Answer: (c).Both A and B

Q108.

Which is the symbol used to separate a super-package and a sub-package at the time of declaring or importing in a Java program?

Dollar ($)

Pound (#)

Period (.) or DOT

Arrow (->)

Discuss

Answer: (c).Period (.) or DOT

Q109.

Choose a correct statement about using the classes or interfaces or abstract classes inside the packages in our Java program.

You can extend the class imported from the package.

You can implement the interfaces imported from the package.

You can extend the abstract classes imported from the package.

All the above

Discuss

Answer: (d).All the above

Q110.

Accessing the variables, constants,or methods of a class, imported from a package is subjective to access modifiers like PUBLIC, PRIVATE, PROTECTED and default. State TRUE or FALSE.

TRUE

FALSE

May be TRUE or FALSE

Can't Say

Discuss

Answer: (a).TRUE

Page 11 of 12

Welcome to the Interfaces and Packages MCQs Page

Interfaces and Packages MCQs | Page 11 of 12

Explore more Topics under Java Programming

Language Fundamentals

Data Types,Variables and Arrays

Operators and Control Statements

Classes and Methods

Inheritance

String Handling

java lang and java io

Serialization and Networking

java util

Exception Handling in Java

Multithreading

IO and Applets

Event Handling

Session Management,JSP and Servlet

Miscellaneous Topics in Java

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