Index: Makefile
===================================================================
--- Makefile
+++ Makefile
@@ -2,7 +2,7 @@
 
 PORTNAME=	mesos
 PORTVERSION=	1.10.0
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	sysutils
 MASTER_SITES=	APACHE/mesos/${PORTVERSION}
 PKGNAMEPREFIX=	apache-
@@ -65,9 +65,38 @@
 
 INSTALL_TARGET=	install-strip
 
-OPTIONS_DEFINE=	DEPLOY
+OPTIONS_DEFINE=	DEPLOY JAVA
 OPTIONS_SUB=	yes
 
 DEPLOY_DESC=	Install deploy scripts
+JAVA_DESC=	Enable Java bindings
 
+JAVA_CONFIGURE_ENABLE=	java
+JAVA_USE=		java=yes
+JAVA_BUILD_DEPENDS=	mvn:devel/maven
+JAVA_FETCH_DEPENDS=	mvn:devel/maven
+JAVA_CONFIGURE_ENV=	PROTOBUF_JAR="${MAVEN_LOCAL_REPO}/com/google/protobuf/protobuf-java/${PROTOBUF_VERSION}/protobuf-java-${PROTOBUF_VERSION}.jar"
+JAVA_MAKE_ENV=		MAVEN_OPTS="${MAVEN_OPTS}"
+JAVA_EXTRA_PATCHES=	${PATCHDIR}/extra-patch-src_java_mesos.pom.in
+
+# REVIEW: Can we figure out the current Protobuf version in ports instead of hardcoding???
+PROTOBUF_VERSION=	3.12.2
+
+MAVEN_CMD=		mvn
+# REVIEW: We need a writable location for the local Maven reposistory, is ${HOME}/.m2 ok to use here?
+# REVIEW: Or could use /tmp if that is writeable? Or ${WRKDIR} although it won't yet be crcreated during fetch?
+MAVEN_LOCAL_REPO=	${HOME}/.m2
+MAVEN_OPTS=		-Dmaven.repo.local=${MAVEN_LOCAL_REPO}
+MAVEN_ENV=		PROTOBUF_VERSION="${PROTOBUF_VERSION}" MAVEN_OPTS="${MAVEN_OPTS}"
+MAVEN_POM=		${FILESDIR}/maven-deps.pom
+
+# Fetch Maven build dependencies upfront
+do-fetch-JAVA-on:
+	@${SETENV} ${MAVEN_ENV} \
+	${MAVEN_CMD} -f ${MAVEN_POM} dependency:go-offline
+
+# Replace Protobuf version in src/java/mesos.pom.in
+post-patch-JAVA-on:
+	@${REINPLACE_CMD} -e 's|@PROTOBUF_VERSION@|${PROTOBUF_VERSION}|g' ${WRKSRC}/src/java/mesos.pom.in
+
 .include <bsd.port.mk>
Index: files/extra-patch-src_java_mesos.pom.in
===================================================================
--- files/extra-patch-src_java_mesos.pom.in
+++ files/extra-patch-src_java_mesos.pom.in
@@ -0,0 +1,20 @@
+--- src/java/mesos.pom.in.orig	2020-06-16 03:05:20 UTC
++++ src/java/mesos.pom.in
+@@ -36,7 +36,7 @@
+     <dependency>
+       <artifactId>protobuf-java</artifactId>
+       <groupId>com.google.protobuf</groupId>
+-      <version>3.5.0</version>
++      <version>@PROTOBUF_VERSION@</version>
+     </dependency>
+   </dependencies>
+   <build>
+@@ -168,7 +168,7 @@
+       <plugin>
+         <groupId>org.apache.maven.plugins</groupId>
+         <artifactId>maven-dependency-plugin</artifactId>
+-        <version>2.8</version>
++        <version>3.1.2</version>
+         <executions>
+           <execution>
+             <id>copy-dependencies</id>
Index: files/maven-deps.pom
===================================================================
--- files/maven-deps.pom
+++ files/maven-deps.pom
@@ -0,0 +1,53 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.apache.mesos</groupId>
+  <artifactId>mesos</artifactId>
+  <name>mesos</name>
+  <version>1.10.0</version>
+  <description>The Apache Mesos Java API jar.</description>
+  <url>http://mesos.apache.org</url>
+  <parent>
+    <groupId>org.apache</groupId>
+    <artifactId>apache</artifactId>
+    <version>11</version>
+  </parent>
+  <dependencies>
+    <dependency>
+      <artifactId>protobuf-java</artifactId>
+      <groupId>com.google.protobuf</groupId>
+      <version>${env.PROTOBUF_VERSION}</version>
+    </dependency>
+    <dependency>
+      <artifactId>apache-jar-resource-bundle</artifactId>
+      <groupId>org.apache</groupId>
+      <version>1.4</version>
+    </dependency>
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <artifactId>maven-dependency-plugin</artifactId>
+	<version>3.1.2</version>
+      </plugin>
+      <plugin>
+        <artifactId>maven-gpg-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <artifactId>maven-javadoc-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <artifactId>maven-shade-plugin</artifactId>
+        <version>2.2</version>
+      </plugin>
+      <plugin>
+        <artifactId>maven-source-plugin</artifactId>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <version>1.8</version>
+      </plugin>
+    </plugins>
+  </build>
+</project>
+