How to use this tool?
This free online converter lets you convert code from Kotlin to Java in a click of a button. To use this converter, take the following steps -
- Type or paste your Kotlin code in the input box.
- Click the convert button.
- The resulting Java code from the conversion will be displayed in the output box.
Key differences between Kotlin and Java
Characteristic | Kotlin | Java |
---|---|---|
Syntax | Kotlin has a more concise and expressive syntax compared to Java. It supports features like null safety, extension functions, and operator overloading. | Java has a more verbose syntax compared to Kotlin. It does not support null safety, extension functions, or operator overloading. |
Paradigm | Kotlin is a multi-paradigm language that supports both object-oriented and functional programming. | Java is an object-oriented language that supports some functional programming concepts through the use of lambda expressions. |
Typing | Kotlin is a statically typed language that supports type inference. | Java is a statically typed language that does not support type inference. |
Performance | Kotlin has similar performance to Java as it compiles to bytecode that runs on the Java Virtual Machine (JVM). | Java has good performance due to its efficient bytecode and just-in-time (JIT) compilation. |
Libraries and frameworks | Kotlin has good interoperability with Java libraries and frameworks. It also has its own set of libraries and frameworks like Ktor and kotlinx. | Java has a vast ecosystem of libraries and frameworks like Spring, Hibernate, and Apache Struts. |
Community and support | Kotlin has a growing community and is backed by JetBrains, the company behind popular IDEs like IntelliJ IDEA and Android Studio. | Java has a large and mature community with extensive documentation and support. |
Learning curve | Kotlin has a relatively low learning curve for Java developers as it is interoperable with Java and has a similar syntax. It also has good documentation and resources. | Java has a moderate learning curve for beginners due to its verbose syntax and concepts like object-oriented programming and memory management. |