Applications of Java

Question 1

What is a notable benefit of programming in Java?

a) Java programs can only run on Windows
b) Java programs are difficult to debug
c) Java programs can be run on any platform with the JVM
d) Java requires complex setup procedures

Answer 1

c) Java programs can be run on any platform with the JVM

Question 2

What feature allows for code-reusability in Java?

a) Interface
b) Class
c) Method
d) Package

Answer 2

b) Class

Question 3

How does Java’s automatic garbage collection benefit developers?

a) It allows for manual memory management
b) It requires developers to deallocate resources
c) It helps focus on business logic without worrying about memory management
d) It reduces the number of available objects

Answer 3

c) It helps focus on business logic without worrying about memory management

Question 4

What is a limitation of Java in terms of performance?

a) Java programs cannot use multi-threading
b) Java does not support object-oriented programming
c) Java performance may not match languages like C/C++
d) Java programs run slower on modern machines

Answer 4

c) Java performance may not match languages like C/C++

Question 5

What is one of the common use cases of Java?

a) Developing video games exclusively for consoles
b) Web programming using Java Server Pages and servlets
c) Operating system development
d) Writing scripts for automation in Linux

Answer 5

b) Web programming using Java Server Pages and servlets

Question 6

In which field is Java widely adopted for its applications?

a) Web design
b) Data analysis
c) Scientific applications
d) Hardware development

Answer 6

c) Scientific applications

Question 7

What big data platform is written in Java?

a) Apache Spark
b) Hadoop
c) MongoDB
d) Redis

Answer 7

b) Hadoop

Question 8

Which framework can be used for developing graphical user interfaces (GUIs) in Java?

a) Bootstrap
b) Swing
c) Flask
d) Angular

Answer 8

b) Swing

Question 9

What is the first official programming language for Android applications?

a) JavaScript
b) Python
c) Java
d) Ruby

Answer 9

c) Java

Question 10

Which programming language is now recommended for Android apps, having taken over from Java?

a) C#
b) Kotlin
c) PHP
d) Swift

Answer 10

b) Kotlin

Question 11

What is jMonkeyEngine used for?

a) Developing web applications
b) Creating mobile apps
c) Building 3D games
d) Analyzing big data

Answer 11

c) Building 3D games

Question 12

What is one of the fields where Java is very popular?

a) Mobile application development
b) Data visualization
c) Distributed computing
d) Game development

Answer 12

c) Distributed computing

Question 13

What library allows Java applications to connect to databases?

a) JPA
b) JDBC
c) JNDI
d) Hibernate

Answer 13

b) JDBC

Question 14

What does ETL stand for?

a) Extract, Transform, Load
b) Extract, Transmit, Load
c) Encode, Transform, Load
d) Extract, Transform, Link

Answer 14

a) Extract, Transform, Load

Question 15

What is a component in Java that allows defining responses to HTTP requests?

a) Java Server Pages
b) Servlet
c) Spring framework
d) REST API

Answer 15

b) Servlet

Question 16

What combination simplifies building dynamic websites in Java?

a) HTML and JavaScript
b) HTML and JSP
c) HTML and CSS
d) HTML and Java

Answer 16

d) HTML and Java

Question 17

What is a significant feature of the Spring framework?

a) It requires a lot of boilerplate code
b) It simplifies server-side development
c) It is only for mobile applications
d) It does not support REST APIs

Answer 17

b) It simplifies server-side development

Question 18

What are boilerplate codes?

a) Code that is unique for each application
b) Repetitive code written in many parts of an application
c) Code that is only found in mobile applications
d) Code that is used for testing

Answer 18

b) Repetitive code written in many parts of an application

Question 19

What type of APIs can be easily built using the Spring framework?

a) SOAP APIs
b) REST APIs
c) GraphQL APIs
d) gRPC APIs

Answer 19

b) REST APIs

Question 20

Which framework is widely used for big data operations and is written in Java?

a) Apache Flink
b) Apache Hadoop
c) Apache Storm
d) Apache Spark

Answer 20

b) Apache Hadoop

Question 21

What popular big data tool is written in both Java and Scala?

a) Apache Hive
b) Apache Kafka
c) Apache Flume
d) Apache Cassandra

Answer 21

b) Apache Kafka

Question 22

What is the preferred language for Android application development as of this recording?

a) Java
b) C++
c) Kotlin
d) Swift

Answer 22

c) Kotlin

Question 23

How is Kotlin related to Java?

a) Kotlin is a completely different language
b) Kotlin does not support Java code
c) Kotlin is fully interoperable with Java
d) Kotlin cannot be used for Android development

Answer 23

c) Kotlin is fully interoperable with Java

Question 24

What is the argument for knowing Java as a programming language?

a) Java is less useful than other languages
b) Java is easy to forget once learned
c) Java is arguably the most important programming language to know
d) Java is only useful for web applications

Answer 24

c) Java is arguably the most important programming language to know