Category Archives: Kotlin

Going functional and fullstack with Spring Fu and Kotlin

Posted on June 13, 2018 by Stephan Oudmaijer

Spring Fu is an experimental Kotlin micro-framework that makes it easy to create lightweight Spring-powered applications with functional APIs instead of annotations. Fu is for functional API, but that’s also a wordplay with the -fu suffix which means skill, the … Continue reading →

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Optional Kotlin

Posted on May 18, 2018 by Stephan Oudmaijer

Last week I was working on a code base which had been partially converted from Java to Kotlin. The converted Java code base was making extensive use of java.util.Optional. The use of Optional might be helpful in situations where you … Continue reading →

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Kotlin properties – from basic to lazy

Posted on March 2, 2018 by Jarno Walgemoed

Kotlin has many things going for it, with one of the main qualities being its built-in null-safety. This guarantees that properties will always have a non-null value at runtime, greatly reducing the risks of coding errors and NullpointerExceptions. In languages … Continue reading →

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Do we need a whole new ekosystem?

Posted on February 8, 2018 by Jasper Sprengers

There’s a joke that if you ask a developer to code a program to process widgets, they’d rather build a domain specific language and tool stack first to make life easier for when they might one day build the software … Continue reading →

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Kotlin Quick Tip: Annotation targets

Posted on February 6, 2018 by Jarno Walgemoed

If you — like me — are a sucker for reducing boilerplate and are using JSR-303 – Bean Validation (I use it as part of Spring Boot) then you may have noticed how it can help you reduce validation boilerplate … Continue reading →

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