SBT error when running package application: java.lang.RuntimeException: No main class detected.

This page summarizes the projects mentioned and recommended in the original post on /r/scala
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  1. sbt-assembly

    Deploy über-JARs. Restart processes. (port of codahale/assembly-sbt)

    You may also use sbt-assembly to produce an uber JAR that embeds the Scala stdlib together with your code, which means that now for running your program you only need a JRE like java -jar app-assembly.jar. This option is great because now if you start adding dependencies to your project those are also included in this massive JAR.

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  3. sbt-native-image

    Plugin to generate native-image binaries with sbt

    Assembly, however, has some disadvantages so you may also want to look into other alternatives like sbt-native-packager. You may even want to produce a binary using sbt-native-image (which uses GraalVM under the hood) so your users do not need to install anything at all, not even a JRE.

  4. sbt-native-packager

    sbt Native Packager

    IMO don't take any of this advice and use https://github.com/sbt/sbt-native-packager

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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