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DevOps / Gradle8 Interview Questions

How do you declare a dependency in Gradle?

Dependencies are declared inside the dependencies {} block, specifying a configuration and a coordinate in group:artifact:version form (or a project reference for a module in the same build):

dependencies {
    implementation 'org.apache.commons:commons-lang3:3.14.0'
    implementation project(':core')
    testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
}

Gradle resolves external coordinates against whatever repositories are declared in the repositories {} block (commonly mavenCentral() or a private repository), downloading the artifact and its own transitive dependencies. In Gradle 8 projects using a version catalog, the same declaration instead references a catalog alias (e.g. implementation libs.commons.lang3), which centralizes the actual version number in one shared TOML file rather than repeating it inline across every module.

What format do external dependency coordinates typically follow?
What does a version catalog let a Gradle 8 project do differently when declaring a dependency?

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