It’s a dependency tree. The things below a listing are dependencies of their parent.
[INFO] +- org.springframework:spring-core:jar:4.0.2.RELEASE:compile
[INFO] | \- commons-logging:commons-logging:jar:1.1.3:compile
Spring-core depends on commons-logging.
[INFO] +- org.glassfish.jersey.core:jersey-server:jar:2.6:compile
[INFO] | +- org.glassfish.jersey.core:jersey-common:jar:2.6:compile
[INFO] | | +- (javax.ws.rs:javax.ws.rs-api:jar:2.0:compile - omitted for duplicate)
[INFO] | | +- (javax.annotation:javax.annotation-api:jar:1.2:compile - omitted for duplicate)
Jersey-server depends on jersey-common. Jersey-common depends on rs-api and annotation-api, etc.