Java & Kotlin Quiz (v3)

KOTLIN

100

When was Kotlin announced?

2011

200

A language feature and a library for asynchronous programming in Kotlin

kotlinx.coroutines

300

Code name for the new Kotlin compiler introduced in Kotlin 2.0

K2

400

In Kotlin, the ability to extend a class or an interface with new functionality without having to inherit from a class

extension functions

500

What is the name of Kotlin mascot?

Kodee

JAVA

100

Stream API enhancement to support custom intermediate operations.

Stream Gatherers

200

What is the project name aimed at providing standardized nullness annotations for Java?

JSpecify

300

Does Java have String Templates?

No.

400

How many reference types are in Java?

4 (Strong, Weak, Soft, Phantom)

500

The name of JEP (Java Enhancement Proposal) in OpenJDK

JEP 1: JDK Enhancement-Proposal & Roadmap Process

JVM

100

The default GC in OpenJDK 24

ZGC?

200

Java 8 class file major.minor version

52.0

300

What bytecode instruction is used to invoke a method on an object?

invokevirtual

400

How to configure max limit of JVM heap

-Xmx (e.g. -Xmx512m, -Xmx1G)

500

A bytecode instruction to push constant 1 to the execution stack

ICONST_1

JETBRAINS TOOLS

100

Name 5 JetBrains IDEs

IDEA, Rider, PhpStorm, WebStorm, Goland, RustRover, MPS, PyCharm

200

CI server by JetBrains

TeamCity

300

Build tool by JetBrains

Amper

400

JetBrains IDE for Domain-Specific Languages

MPS

500

The name of a JetBrains coding agent product?

Junie

ENTERPRISE FRAMEWORKS

100

Name 5 Java Web Frameworks

Spring, Quarkus, Micronaut, Vaadin, Helidon

200

Which version of Spring Framework added support for Kotlin?

Spring Framework 5

300

The most popular build tool for Java

Maven

400

A Java web framework for creating web UIs.

Vaadin

500

Java standard API for messaging

JMS