maven-dependency-management

Maven dependency conflicts occur when transitive dependencies request different versions of the same library. Resolve them by using dependencyManagement to centralize versions, declaring explicit versions in your pom.xml, or using exclusions to remove unwanted transitive dependencies from your dependency tree.

Use a BOM (Bill of Materials) or dependencyManagement section in a parent pom.xml to centralize version declarations. This approach ensures all modules reference consistent versions, reduces duplication, and simplifies updates across your multi-module project.

Import a BOM by adding it to the dependencyManagement section with type pom and scope import. BOMs centralize dependency declarations and versions, allowing you to inherit a curated set of compatible dependencies without declaring each one individually in every module.

Yes. Analyze your dependency tree with mvn dependency:tree to identify unnecessary transitive dependencies, then use exclusions to remove them. Apply explicit scopes (compile, test, runtime, provided) to prevent unneeded dependencies from being packaged or resolved.

Compile scope dependencies are needed for building and runtime. Test scope dependencies are only required for test compilation and execution. Runtime scope dependencies are not needed at compile time but are required when the application runs, reducing build classpath size.

No, they serve different purposes but often work together. A BOM is imported via dependencyManagement and provides version alignment across multiple projects. Direct dependencyManagement sections work within a single project or module hierarchy to centralize versions.