If you would like to contribute code you can do so through GitHub by forking the repository and sending a pull request (on a branch other than master or gh-pages).
By contributing your code, you agree to license your contribution under the terms of the APLv2: https://github.com/opentracing/opentracing-java/blob/master/LICENSE
All files are released with the Apache 2.0 license.
If you are adding a new file it should have a header like below. This can be automatically added by running ./mvnw com.mycila:license-maven-plugin:format.
/**
* Copyright 2016 The OpenTracing Authors
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/