Try the revamped Kotlin docs design →

Try the revamped Kotlin docs design!

Let’s go
v2.0.20
  • Solutions
    • Multiplatform
    • Server-side
    • Data science
    • Android
  • Docs
  • Community
  • Teach
  • Play
    • Playground
    • Examples
    • Koans
← Docs
kotlin.test / kotlin.test.junit5 / JUnit5Asserter / assertNotNull

assertNotNull

JUnit5
1.0
fun assertNotNull(message: String?, actual: Any?): Unit
(source)
Stay in touch:
  • Contributing to Kotlin
  • Releases
  • Press Kit
  • Security
  • Blog
  • Issue Tracker
  • Brand assets
  • Careers
  • Kotlin Merch
  • Opt-Out
Supported and developed by JetBrains.
Kotlin™ is protected under the Kotlin Foundation
and licensed under the Apache 2 license.