Compose & Android Deep Dive Package (Jetpack Compose internals + Manifest Android Interview) https://leanpub.com/b/android-deep-dive-package by Jaewoong and Jorge Castillo is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks

Manifest Android Interview 日本語版: Androidの技術面接を突破するための実践ガイド https://leanpub.com/manifest-android-interview-jp by Jaewoongとmikami is the featured book on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering

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I created a toy #Java project using #JSpecify

This is what you can express (among others):

https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/src/main/java/ac/simons/javaspektrum/jspecify/Calculator.java#L9

One required argument, one optional argument with optional content.

To check it, you need to have #Nullaway https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/pom.xml#L319-L341

Build with mvn package -DwithNullaway, to see compile fail (there's test passing null).

Nullaway and modern Java is fun: https://codeberg.org/michael-simons/javaspektrum/src/commit/14281628ac054dfcaed2c4e3bf951f3329da6b49/jspecify/.mvn/jvm.config#L5-L12

Also added #Kotlin code: You can remove the package, and see how it affects what Kotlin sees.

Compose & Android Deep Dive Package (Jetpack Compose internals + Manifest Android Interview) https://leanpub.com/b/android-deep-dive-package by Jaewoong and Jorge Castillo is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks

The following 2 books are included in this bundle...
Manifest Android Interview and Jetpack Compose internals

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Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $49.99; get it for $17.50 with this coupon: https://leanpub.com/sh/oUp2MfFU #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Big Kotlin pack https://leanpub.com/b/kotlin_mm by Marcin Moskała is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #Kotlin #Android #Java #ComputerProgramming #Engineering

The following 5 books are included in this bundle...
Kotlin Essentials, Functional Kotlin, Advanced Kotlin, Kotlin Coroutines, and Effective Kotlin

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Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track of online courses on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #kotlin #programming

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $49.99; get it for $17.50 with this coupon: https://leanpub.com/sh/7wag0x60 #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track of online courses on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #programming #career

This is the complete track to learn about essential Kotlin features and get ready for working in Kotlin in daily basis. It starts from essentials, and on the way reaches advanced topics like efficient collection processing or DSL creation.

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Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $49.99; get it for $17.50 with this coupon: https://leanpub.com/sh/x1AlUOPv #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Kotlin Essentials http://leanpub.com/courses/leanpub/kotlinessentials by Marcin Moskała is the featured online course on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #android

Kotlin Essentials http://leanpub.com/courses/leanpub/kotlinessentials by Marcin Moskała is the featured online course on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #courses #career

Compose & Android Deep Dive Package (Jetpack Compose internals + Manifest Android Interview) https://leanpub.com/b/android-deep-dive-package by Jaewoong and Jorge Castillo is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks

✨ New blog post: "STF Milestone 6: Improved Kotlin support"

#JUnit 6.0.0-RC1 improves JUnit's #Kotlin story by adding support for suspending functions, sequences, contracts and nullness annotations.

👉 https://marcphilipp.de/blog/2025/08/21/stf-milestone-6-improved-kotlin-support/

Thanks to the @sovtechfund for their support!

Alt...

object ImprovedKotlinSupportTests { val data = sequenceOf( // Sequence<T> support arguments(1, Month.JANUARY), arguments(12, Month.DECEMBER) ) @ParameterizedTest @FieldSource("data") // suspending function support for coroutine testing suspend fun test(value: Int, month: Month?) { assertNotNull(month) // contracts to support... assertEquals(value, month.value) // smart casts! } }

Compose & Android Deep Dive Package (Jetpack Compose internals + Manifest Android Interview) https://leanpub.com/b/android-deep-dive-package by Jaewoong and Jorge Castillo is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks

The following 2 books are included in this bundle...
Manifest Android Interview and Jetpack Compose internals

Find it on Leanpub!

Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track of online courses on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming

Functional Kotlin http://leanpub.com/courses/leanpub/functional_kotlin by Marcin Moskała is the featured course on the Leanpub homepage! https://leanpub.com#courses #kotlin #programmig

Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #android #courses #career

Manifest Android Interview: The ultimate guide to cracking Android technical interviews https://leanpub.com/manifest-android-interview by Jaewoong is the featured book on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering

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Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/LnWAwBHU #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track of online courses on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming

Functional Kotlin http://leanpub.com/courses/leanpub/functional_kotlin by Marcin Moskała is the featured online course on the Leanpub homepage! https://leanpub.com #kotlin #programming #android #courses

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/2Vi0wbPl #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Functional Kotlin http://leanpub.com/courses/leanpub/functional_kotlin by Marcin Moskała is the featured course on the Leanpub homepage! https://leanpub.com #courses #kotlin #programming #android

Kotlin Coroutines by Marcin Moskała is on sale on Leanpub! Its suggested price is $29.99; get it for $15.99 with this coupon: https://leanpub.com/sh/1yFpLnaz #ComputerProgramming #Kotlin

The « Building a RESTful Web Service » #Spring guide is now available in #Kotlin in addition to Java. We are collaborating with JetBrains to add Kotlin code snippets to the 10 most popular guides. https://spring.io/guides/gs/rest-service

Kotlin for developers http://leanpub.com/set/leanpub/kotlin_for_developers by Marcin Moskała is the featured Track of online courses on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/ESc34kXC #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Manifest Android Interview: The ultimate guide to cracking Android technical interviews https://leanpub.com/manifest-android-interview by Jaewoong is the featured book on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks #career #jobinterview

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Big Kotlin pack https://leanpub.com/b/kotlin_mm by Marcin Moskała is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #Kotlin #Android #Java #ComputerProgramming #Engineering #books #ebooks

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $35.00; get it for $20.00 with this coupon: https://leanpub.com/sh/PIi6YFqr #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Kotlin Essentials http://leanpub.com/courses/leanpub/kotlinessentials by Marcin Moskała is the featured course on the Leanpub homepage! https://leanpub.com #Kotlin #ComputerProgramming #android

Manifest Android Interview English + Deutsche Ausgabe https://leanpub.com/b/manifest-android-interview-bundle-en-de by Jaewoong and TranslateAI is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #ComputerProgramming #Android #Kotlin #Engineering #Software #SoftwareEngineering #books #ebooks

Functional Kotlin http://leanpub.com/courses/leanpub/functional_kotlin by Marcin Moskała is the featured online course on the Leanpub homepage! https://leanpub.com #kotlin #programming

Big Kotlin pack https://leanpub.com/b/kotlin_mm by Marcin Moskała is the featured bundle of ebooks 📚 on the Leanpub homepage! https://leanpub.com #Kotlin #Android #Java #ComputerProgramming #Engineering #books #ebooks

Atomic Kotlin https://leanpub.com/AtomicKotlin by Bruce Eckel and Svetlana Isakova is the featured book on the Leanpub homepage! https://leanpub.com #Kotlin #books #ebooks

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Good morning everyone! Here is the latest updates on my channel #jesprotech #java #kotlin #projects #refactoring #repurposing #focus #afterbo: http://youtube.com/post/UgkxqM4qfsa5FajdzWmamGkf_9YYCBa4RNVV?si=mphHYTGfk1a26-EX

New 📚 Release! Kotlin 2.0 Crash Course: Build, test, and secure Android and web applications including Functional patterns, JSON handling, and RESTful endpoints #books #ebooks #kotlin #java #webdevelopment #programming #android

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Link: https://leanpub.com/kotlin2

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $54.99; get it for $32.79 with this coupon: https://leanpub.com/sh/467FcM2K #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Jetpack Compose internals by Jorge Castillo is on sale on Leanpub! Its suggested price is $54.99; get it for $32.79 with this coupon: https://leanpub.com/sh/LbMhk8hI #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering

Jetpack Compose internals https://leanpub.com/composeinternals by Jorge Castillo is the featured book on the Leanpub homepage! https://leanpub.com #Software #ComputerProgramming #Java #Kotlin #SoftwareArchitecture #SoftwareEngineering #books #ebooks #android

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Effective Kotlin by Marcin Moskała is on sale on Leanpub! Its suggested price is $29.90; get it for $12.50 with this coupon: https://leanpub.com/sh/Qdi5KtpV #ComputerProgramming #Engineering #Kotlin

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In our research, we closely work together with both JetBrains and ING (in separate projects). Great to see this reflection on Kotlin usage at ING, also featured as keynote at #KotlinConf.
https://medium.com/ing-blog/kotlin-adoption-inside-ing-5-years-later-df6421b14dc4

#kotlin #jetbrains #ing

Kotlin Coroutines http://leanpub.com/courses/leanpub/kotlin_coroutines by Marcin Moskała is the featured online course on the Leanpub homepage! https://leanpub.com #programming #kotlin #android

New 📚 Release! Kotlin 2.0 Crash Course: Build, test, and secure Android and web applications including Functional patterns, JSON handling, and RESTful endpoints #books #ebooks #kotlin #java #webdevelopment #programming #android

Find it on Leanpub!

Link: https://leanpub.com/kotlin2