Updated FlatBuffers release process (markdown)

FlatBuffers-release-process.md

@@ -45,6 +45,39 @@ Steps to release a new version of FlatBuffers to github:
 1. `twine upload dist/flatbuffers-X.X.X-py2.py3-none-any.whl`
 1. Output should be on: https://pypi.org/project/flatbuffers/
 
+## Java (Maven)
+1. Update `pom.xml` with the current version.
+1. Need `gpg` key installed in local keyring. 
+
+    1. `gpg --import private.key`
+
+       If this times out, its because its asking for a password and doesn't show it to you. 
+
+       1. `sudo apt install pinentry-tty`
+       1. `sudo update-alternatives --config pinentry`
+       1. Select the `pinentry-tty` option.
+    
+    1. Set up `.m2/settings.xml` with
+
+    ```
+    <settings>
+      <servers>
+        <server>
+          <id>ossrh</id>
+          <username>FILL ME IN</username>
+          <password>FILL ME IN</password>
+        </server>
+      </servers>
+    </settings>
+    ```
+1. In root directory run `mvn clean deploy -P release`
+
+   This will publish the version and you cannot republish the same version. So it might be good to do a ["snapshot" deplyoment](https://central.sonatype.org/publish/publish-maven/#performing-a-snapshot-deployment) by appending `-SNAPSHOT` to the version.
+
+1. It should prompt for your password during the signing stage.
+1. It should eventually complete and show: https://search.maven.org/artifact/com.google.flatbuffers/flatbuffers-java
+
+
 ## To Categorize / Old Notes
 
 * Change the version number in base.h, package.json, pom.xml (and various such files in grpc/), CMakeLists.txt (FlatBuffers_Library_SONAME_FULL), CMake/Version.cmake, dart/pubspec.yaml, rust/cargo.toml (not same as FlatBuffers version), Constants.java, FlatBufferConstants.cs, idl_gen_java/csharp/kotlin/swift.cpp