diff --git a/dev-java/protobuf-java/Manifest b/dev-java/protobuf-java/Manifest
new file mode 100644
index 0000000000000..ba9743b769c0f
--- /dev/null
+++ b/dev-java/protobuf-java/Manifest
@@ -0,0 +1 @@
+DIST protobuf-3.0.0_beta2.tar.gz 3333054 SHA256 be224d07ce87f12e362cff3df02851107bf92a4e4604349b1d7a4b1f0c3bfd86 SHA512 3a9329603226dabeaae7c28eb7463fb4403383e7774d53742e9e38a0426f5ef370803c68e4d4bc0d37585618fb340befe4f812731db0984b12032c3d931cdca7 WHIRLPOOL 0e77105c24d71c0269f4375ebfaef38175d762e1a90cdd81f594c13bbece9f390ada9291f722e8e0227952a1f5cd94976037f069b86703c7a3a37a9277cb66f8
diff --git a/dev-java/protobuf-java/metadata.xml b/dev-java/protobuf-java/metadata.xml
new file mode 100644
index 0000000000000..7106f60f89b56
--- /dev/null
+++ b/dev-java/protobuf-java/metadata.xml
@@ -0,0 +1,27 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE pkgmetadata SYSTEM 'http://www.gentoo.org/dtd/metadata.dtd'>
+<pkgmetadata>
+<maintainer type='person'>
+	<email>vapier@gentoo.org</email>
+</maintainer>
+<maintainer type='person'>
+	<email>tomboy64@sina.cn</email>
+</maintainer>
+<maintainer type='project'>
+	<email>java@gentoo.org</email>
+	<name>Gentoo Java Project</name>
+</maintainer>
+<maintainer type='project'>
+	<email>proxy-maint@gentoo.org</email>
+	<name>Gentoo Proxy Maintainers Project</name>
+</maintainer>
+<use>
+	<flag name="nano">Enable code generator and runtime library designed specifically for resource-constrained systems, like Android</flag>
+</use>
+<slots>
+	<subslots>soname major version number of protobuf</subslots>
+</slots>
+<upstream>
+	<remote-id type='github'>google/protobuf</remote-id>
+</upstream>
+</pkgmetadata>
diff --git a/dev-java/protobuf-java/protobuf-java-3.0.0_beta2.ebuild b/dev-java/protobuf-java/protobuf-java-3.0.0_beta2.ebuild
new file mode 100644
index 0000000000000..b747b75a48e0f
--- /dev/null
+++ b/dev-java/protobuf-java/protobuf-java-3.0.0_beta2.ebuild
@@ -0,0 +1,67 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+JAVA_PKG_IUSE="doc source"
+
+inherit java-pkg-2 java-pkg-simple
+
+MY_PV=${PV/_beta2/-beta-2}
+
+DESCRIPTION="Google's Protocol Buffers - official Java Bindings"
+HOMEPAGE="https://github.com/google/protobuf/ https://developers.google.com/protocol-buffers/"
+SRC_URI="https://github.com/google/protobuf/archive/v${MY_PV}.tar.gz -> protobuf-${PV}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0/10"
+KEYWORDS="~amd64 ~arm ~arm64 ~mips ~ppc64 ~sh ~x86 ~amd64-linux ~arm-linux ~x86-linux ~x64-macos ~x86-macos"
+IUSE="nano"
+
+# Protobuf is only a build-time dep, but depend on the exact same version
+# (excluding revision), since we are using the same tarball.
+# But probably same subslot is sufficient.
+DEPEND=">=virtual/jdk-1.5
+	>=dev-libs/protobuf-3"
+RDEPEND=">=virtual/jre-1.5
+	!<dev-libs/protobuf-3[java(-)]"
+S="${WORKDIR}/protobuf-${MY_PV}"
+
+src_prepare() {
+	eapply_user
+	java-pkg-2_src_prepare
+}
+
+src_compile() {
+	pushd "${S}/java" >/dev/null || die
+	einfo "Compiling Java library ..."
+	/usr/bin/protoc --java_out=src/main/java -I../src ../src/google/protobuf/descriptor.proto || die
+	JAVA_SRC_DIR="${S}/java/src/main/java"
+	JAVA_JAR_FILENAME="protobuf.jar"
+	java-pkg-simple_src_compile
+	popd >/dev/null || die
+	if use nano; then
+		einfo "Compiling Java Nano library ..."
+		pushd "${S}/javanano" >/dev/null || die
+		/usr/bin/protoc --java_out=src/main/java -I../src ../src/google/protobuf/descriptor.proto || die
+		JAVA_SRC_DIR="${S}/javanano/src/main/java"
+		JAVA_GENTOO_CLASSPATH_EXTRA="${S}/java/src/main/java/"
+		JAVA_JAR_FILENAME="protobuf-nano.jar"
+		java-pkg-simple_src_compile
+		popd >/dev/null || die
+	fi
+}
+
+src_install() {
+	JAVA_JAR_FILENAME="${S}/java/protobuf.jar"
+	JAVA_SRC_DIR="${S}/java/src/main/java"
+	if use nano; then
+		JAVA_JAR_FILENAME="${JAVA_JAR_FILENAME} ${S}/javanano/protobuf-nano.jar"
+		JAVA_SRC_DIR="${JAVA_SRC_DIR} ${S}/javanano/src/main/java"
+	fi
+	mv "${S}/java/target" . || die
+	if use nano; then
+		cp -Rvf "${S}/javanano/target" . || die
+	fi
+	java-pkg-simple_src_install
+}