Before Gradle can download a library, you must tell it which repositories to search. This is done in the repositories {} block of your build.gradle (Groovy) or build.gradle.kts (Kotlin) file.
: These are the servers or locations where libraries are hosted. Common public repositories include Maven Central and Google Maven. gradle download external libraries
: These define the scope of the library, such as whether it's needed only for compilation, for running the app, or only for testing. Declaring Repositories Before Gradle can download a library, you must
: When you add a library, Gradle automatically downloads its dependencies as well, ensuring all required components are present. Common Dependency Configurations Common public repositories include Maven Central and Google
External libraries are added to the dependencies {} block. The most common configuration is implementation , which makes the library available both during compilation and at runtime. : implementation("group:name:version") .