Shadow is a plugin that packages an application into an executable fat jar file if the current file is outdated. Tutorials → Working with JAR files → Fat JAR files. The task shadowJar (e.g., running the command gradlew shadowJar or gradlew clean shadowJar ) creates the JAR file in the build/libs folder.
One may also ask, how do I create a fat jar in Gradle?
To build a Fat JAR, you need to configure the Shadow plugin first:
- Open the build.gradle(.kts) file and add the plugin to the plugins block: plugins { id ‘com.github.johnrengelman.shadow’ version ‘7.0.0’ }
- Add the shadowJar task: shadowJar { manifest { attributes ‘Main-Class’: ‘com.example.ApplicationKt’ } }
- Add the plugin. First we need to add the plugin we will be using. …
- Configure the top-level dependency we want to shade. Add a dependency on the jar you wish to shade. …
- Configure any transitive dependencies we don’t want to shade. …
- Set up the packages we want to relocate. …
- Publish our shaded jar.
Hereof, what is a shadowJar?
shadowJar is an extra plugin and not a synonym, it creates different jar then the jar tasks of Gradle.
What is an Uberjar?
An uber-JAR—also known as a fat JAR or JAR with dependencies—is a JAR file that contains not only a Java program, but embeds its dependencies as well. This means that the JAR functions as an “all-in-one” distribution of the software, without needing any other Java code.
What is difference between compile and implementation in Gradle?
Fortunately, the implementation dependency configuration provides the same functionality as compile. You should always use implementation rather than compile for dependencies, as compile is now deprecated or removed in the case of Gradle 7+.
What is mergeServiceFiles?
Using mergeServiceFiles() merges (or concatenates in this case) the BeanDefinitionReference files of both the projects so that at runtime, you get all the beans defined. More details can be found in the gradle forum topic here.
What is relocate in Gradle?
Shadow is capable of scanning a project’s classes and relocating specific dependencies to a new location. This is often required when one of the dependencies is susceptible to breaking changes in versions or to classpath pollution in a downstream project.
What is shadow dependency?
Shadow is a Gradle plugin for combining a project’s dependency classes and resources into a single output Jar. The combined Jar is often referred to a fat-jar or uber-jar.