FAQ

Jackson Project FAQ

General

What is the License?

Apache License 2.0 for Jackson 2.0 and later. Jackson 1.x was dual licensed so that user could choose either Apache License 2.0 or LGPL 2.1

It is also possible to get alternative licenses from FasterXML if there are specific reasons why Apache License 2.0 is not optimal. Note that this is not something most developers need, but is available (send email to info at fasterxml dot com for inquiries).

Why do source files NOT contain license and/or copyright information

Some projects use (and require use of) per-file comment header which indicates license details and copyright assignments. Jackson project does not do this: we believe this is redundant and serves no useful purpose. Instead, the license information is contained in multiple places:

• In src/main/resources/META-INF/LICENSE, so that it gets included in
  • Binary (jar)
  • Source archives (jar / zip)
• pom.xml of the project (in some case parent pom)
• Included in project Wiki pages