Maven BOM [Bill Of Materials] Dependency

by

What is the purpose of bom object?

Maven parent-child relationship is very handy for managing dependencies of multiple projects in a single place. However, Maven projects can have only one (direct) parent. So imports were introduced for dependency management to allow using several projects for managing your dependencies. With an import you can define a single dependency like this and get multiple dependencies managed – handy! Although you could import any project, BOM is a special project designed to be used for imports like this. Usually a BOM project will have very little defined besides dependencyManagement section, and will not have any unrelated dependencies, to avoid affecting your main project too much.

Which bom dependency I need to use?

BOM is not a requirement, you don’t need to use either. Instead, you could define all managed dependencies in dependencyManagement section yourself. These can include Spring, JBoss and any other dependencies. BOM, however, simplifies this for you significantly. You can add as many BOMs as you want, so add both! But as @Jesper mentions, don’t forget to use correct versions. When using multiple BOMs their order will matter if they both reference a common dependency.

Does the jar file gets downloaded into my Maven Dependencies?

Notice BOM is <type>pom</type>, not the default jar. So there’s no jar to be downloaded. A single pom.xml file will be downloaded and read by Maven.

More Related Contents:

  1. What is the difference between “pom” type dependency with scope “import” and without “import”?
  2. How to use POMs as a dependency in Maven?
  3. How do I tell Maven to use the latest version of a dependency?
  4. What is pluginManagement in Maven’s pom.xml?
  5. Make Maven to copy dependencies into target/lib
  6. Maven: Failed to read artifact descriptor
  7. How do I tell Spring Boot which main class to use for the executable jar?
  8. java.lang.ClassNotFoundException: org.springframework.boot.SpringApplication Maven
  9. java.lang.NoClassDefFoundError: org/springframework/core/env/ConfigurableEnvironment
  10. stop IntelliJ IDEA to switch java language level every time the pom is reloaded (or change the default project language level)
  11. Configure active profile in SpringBoot via Maven
  12. How to set spring active profiles with maven profiles
  13. Display omitted versions in maven dependency:tree?
  14. Java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/exc/InvalidDefinitionException
  15. Conflicting library version in a Java Maven project
  16. Is there anyway to exclude artifacts inherited from a parent POM?
  17. repository element was not specified in the POM inside distributionManagement element or in -DaltDep loymentRepository=id::layout::url parameter
  18. How to create spring-based executable jar with maven?
  19. IntelliJ – Convert a Java project/module into a Maven project/module
  20. Gradle – getting the latest release version of a dependency
  21. Spring @ContextConfiguration how to put the right location for the xml
  22. Maven Resource Filtering with Spring Boot: Could not resolve placeholder
  23. java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotationUtils.isInJavaLangAnnotationPackage(Ljava/lang/annotation/Annotation;)Z
  24. Hibernate, Java 9 and SystemException
  25. Difference between and tag in Maven `pom.xml` [duplicate]
  26. How can I @Autowire a spring bean that was created from an external jar?
  27. Maven- No plugin found for prefix ‘spring-boot’ in the current project and in the plugin groups
  28. Maven doesn’t recognize sibling modules when running mvn dependency:tree
  29. Maven not picking JAVA_HOME correctly
  30. IllegalArgumentException: At least one JPA metamodel must be present

Leave a Comment