val is like Java final variable and it’s known as immutable in kotlin and can be initialized only single time. Usage of val and lateinit – the misusage of these can cause problems to your actual project. Some code converted can be asserted as not null which in turn can lead to a NullPointerException. Pitfalls – Automatic conversions can also be dangerous to your project, there are some scenarios that you may face new bugs in your code, for example an unexpected nullability. So don’t be afraid to add Kotlin code step by step, it’s not necessary to migrate all code to another language. Interoperability – Java and Kotlin work perfectly together. In this way you can convert your project graduallly and observe all the changes clearly. Access the URL and click on “Convert from Java”. There is a shortcut to access the converter: CMD+SHFT+ALT+K or CTRL+SHIFT+ALT+K depending of your operational system.Īnother option of converting the code is using the online tool try.kotlinlang. Another issue is about usage of android-annontations will most likely break. Probably the most interesting issue you may face is the nullability, because by default, all the converted object will be non-nullable and you will have to explicitly specified them to be nullable or change your logic. However during the automated process the converter would choose not the most appropriate choice, so you must look into the code and figure out if the converter was right in all the scenarios. The converter is really nice, it is smart and does the most of job gracefully. In the IDE, go to Android Studio -> Code -> Convert Java File to Kotlin File: The very easy/initial thing you could do: use the Android Studio IDE to starting the convertion: We are going to discuss how you can go from Java to Kotlin and also talk about some tips about this process. Many developers started migrating the code base away from Java and learning Kotlin on the way. Google announced official support for the Kotlin language at Google I/O 2017.
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