Scope

Java build systems use scopes to set compile and deployment strategies. Knowing them well matters. It helps you pick the right option for each use case.

1. compile - This is the default scope. The dependency is added to the compile classpath.
2. runtime - The dependency isn't on the compile classpath. But it's added to the final jar used at runtime.
3. provided - The dependency is there only at compile and test time. Other sources provide it at runtime.

How runtime dependencies are used

Use it for standalone apps that run in the same JVM. Or use it when you build against APIs only. The implementation is left out at compile time.