Spring Initializr for project creation in Spring Boot - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the default packaging type when creating a Spring Boot project with Spring Initializr?

When you create a new Spring Boot project using Spring Initializr without changing any settings, what packaging type will the project use by default?

A war

B jar

C ear

D zip

💡 Hint

Think about the most common way Spring Boot applications are packaged for easy execution.

Spring Initializr defaults to jar packaging because Spring Boot applications are typically run as standalone jar files.

📝 Syntax

intermediate

Which dependency is required to create a REST API with Spring Initializr?

You want to create a REST API using Spring Boot. Which dependency should you select in Spring Initializr to get the necessary support?

A Spring Web

B Spring Data JPA

C Spring Security

D Spring Batch

💡 Hint

REST APIs need support for HTTP requests and controllers.

The Spring Web dependency includes support for building web applications and RESTful services.

❓ state_output

advanced

What is the value of 'java.version' property in the generated Spring Boot project?

After generating a Spring Boot project with Spring Initializr targeting Java 17, what will be the value of the 'java.version' property in the generated pom.xml or build.gradle file?

A 17

B 11

C 20

D 1.8

💡 Hint

The Java version matches the selected target version in Spring Initializr.

If you select Java 17 in Spring Initializr, the generated project will set java.version to 17 to ensure compatibility.

🔧 Debug

advanced

Why does the generated Spring Boot project fail to start after changing packaging to WAR?

You generated a Spring Boot project with Spring Initializr and changed packaging from JAR to WAR. After adding a servlet container dependency, the application fails to start with a 'No ServletContext' error. What is the most likely cause?

A The Java version is incompatible with WAR packaging

B The packaging type WAR is not supported by Spring Boot

C The project is missing the Spring Web dependency

D The main application class does not extend SpringBootServletInitializer and override configure() method

💡 Hint

WAR packaging requires special setup for servlet initialization.

When packaging as WAR, the main class must extend SpringBootServletInitializer and override configure() to properly initialize the servlet context.

🧠 Conceptual

expert

Which statement about Spring Initializr's dependency management is true?

Consider how Spring Initializr manages dependencies in the generated project. Which of the following statements is correct?

A Spring Initializr always uses the latest available version of each dependency regardless of compatibility

B Spring Initializr requires the user to manually specify versions for all dependencies

C Spring Initializr uses a curated set of dependency versions to ensure compatibility and stability

D Spring Initializr disables dependency version management to allow full user control

💡 Hint

Think about how Spring Boot manages dependencies to avoid conflicts.

Spring Initializr uses a curated set of dependency versions defined by Spring Boot to ensure all dependencies work well together.