What is Kotlin Development?
Kotlin is a modern programming language created by JetBrains and endorsed by Google as the preferred language for Android. It runs on the Java Virtual Machine, interoperates fully with Java, and combines concise, safe syntax with object-oriented and functional styles.
How does Kotlin development work?
Kotlin is a statically typed programming language created by JetBrains, the company behind the IntelliJ IDEA development environment. It runs on the Java Virtual Machine (JVM) and is fully interoperable with Java, meaning Kotlin and Java code can coexist in the same project and call each other freely. This made it straightforward for existing Java teams to adopt Kotlin gradually rather than rewriting everything.
In 2017 Google announced first-class support for Kotlin on Android, and in 2019 made it the preferred language for new Android development. This endorsement accelerated adoption across the Android ecosystem and the wider community. Beyond Android, Kotlin can compile to JavaScript for the web and to native binaries through Kotlin Native, and Kotlin Multiplatform allows teams to share business logic across several platforms, though Android remains by far its most common home.
Why developers choose Kotlin
Kotlin was designed to address long-standing frustrations with Java while staying fully compatible with it. It is more concise, so the same functionality needs less code, which in turn reduces the surface area for bugs and the effort of maintenance. Its type system helps prevent null-pointer errors - a notorious source of application crashes - by making nullability explicit and forcing developers to handle it. Combined with modern language features such as coroutines and the official backing of Google, this makes Kotlin a productive and lower-risk choice for Android work.
What are the key features of Kotlin?
Notable language features include:
- Null safety - the type system distinguishes nullable from non-nullable values to prevent common crashes.
- Conciseness - less boilerplate than Java for the same result.
- Java interoperability - existing Java libraries and code work seamlessly.
- Coroutines - a clean way to write asynchronous, concurrent code.
- Functional and object-oriented support - both paradigms are first-class.
Best practices for Kotlin development
Lean into the language rather than writing Java in Kotlin syntax - use its null-safety, data classes and coroutines as intended. Follow the official coding conventions for consistency, and use coroutines for asynchronous work instead of older callback patterns. When migrating a Java codebase, convert incrementally and let the interoperability carry the transition, rather than attempting a risky full rewrite.
How PixelForce approaches Kotlin development
At PixelForce, the technology stack for each product is a deliberate recommendation made in Phase 1 Scoping and Design, not a fixed default. Our in-house Adelaide team uses Kotlin for native Android work where performance and deep platform integration justify it, and weighs it against cross-platform options through the 1-3-1 method - one problem, three options, one recommendation. Native Android work sits within our android app development capability, while the trade-offs against a shared codebase are covered in cross-platform app development.
Where this applies
The PixelForce services where Kotlin Development matters most - explore how we put it to work in client products.
Frequently asked questions
For most new Android work, Kotlin is the preferred choice - Google officially recommends it. It is more concise than Java, its null-safety prevents a common class of crashes, and features like coroutines simplify asynchronous code. That said, Java remains fully supported and the two interoperate, so existing Java projects are not obsolete. The right choice depends on the codebase and team, but new development typically favours Kotlin.
Yes. Kotlin was designed for full interoperability with Java, so both languages can exist in the same project and call each other's code directly. Kotlin can use any Java library, and Java can use Kotlin classes. This is what allows teams to adopt Kotlin gradually, converting files over time rather than rewriting an entire Java codebase at once, which reduces migration risk.
No. While Android is its most common use, Kotlin is a general-purpose JVM language suitable for server-side and backend development too. It can also compile to JavaScript for web, and to native binaries through Kotlin Native. Kotlin Multiplatform allows sharing logic across Android, iOS and other targets. Android remains the dominant context, but Kotlin's reach extends well beyond it.
Null safety is a feature where the type system distinguishes between values that can be null and those that cannot. A variable must be explicitly declared nullable before it can hold null, and the compiler then forces you to handle that possibility. This prevents null-pointer exceptions, one of the most common causes of application crashes in languages like Java that do not enforce this distinction.
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