diff --git a/knative-build/runtimes/java/build.gradle b/knative-build/runtimes/java/build.gradle
new file mode 100644
index 0000000..4ebd4b8
--- /dev/null
+++ b/knative-build/runtimes/java/build.gradle
@@ -0,0 +1,30 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath "cz.alenkacz:gradle-scalafmt:${gradle.scalafmt.version}"
+    }
+}
+
+subprojects {
+    apply plugin: 'scalafmt'
+    scalafmt.configFilePath = gradle.scalafmt.config
+}
diff --git a/knative-build/runtimes/java/buildtemplate.yaml b/knative-build/runtimes/java/buildtemplate.yaml
new file mode 100644
index 0000000..d083310
--- /dev/null
+++ b/knative-build/runtimes/java/buildtemplate.yaml
@@ -0,0 +1,60 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements; and to You under the Apache License, Version 2.0.
+apiVersion: build.knative.dev/v1alpha1
+kind: BuildTemplate
+metadata:
+  name: openwhisk-nodejs-runtime
+spec:
+  parameters:
+  - name: TARGET_IMAGE_NAME
+    description: name of the image to be tagged and pushed
+  - name: TARGET_IMAGE_TAG
+    description: tag the image before pushing
+    default: "latest"
+  - name: DOCKERFILE
+    description: name of the dockerfile
+  - name: OW_RUNTIME_DEBUG
+    description: flag to indicate debug mode should be on/off
+    default: "false"
+  - name: OW_RUNTIME_PLATFORM
+    description: flag to indicate the platform, one of ["openwhisk", "knative", ... ]
+    default: "knative"
+  - name: OW_ACTION_NAME
+    description: name of the action
+    default: ""
+  - name: OW_ACTION_CODE
+    description: Java source code to be evaluated
+    default: ""
+  - name: OW_ACTION_MAIN
+    description: name of the function in the "__OW_ACTION_CODE" to call as the action handler
+    default: "main"
+  - name: OW_ACTION_BINARY
+    description: flag to indicate zip function, for zip actions, "__OW_ACTION_CODE" must be base64 encoded string
+    default: "false"
+  - name: OW_HTTP_METHODS
+    description: list of HTTP methods, any combination of [GET, POST, PUT, and DELETE], default is [POST]
+    default: "[POST]"
+  - name: OW_ACTION_RAW
+    description: flag to indicate raw HTTP handling, interpret and process an incoming HTTP body directly
+    default: "false"
+  steps:
+  - name: add-ow-env-to-dockerfile
+    image: "gcr.io/kaniko-project/executor:debug"
+    command:
+    - /busybox/sh
+    args:
+    - -c
+    - |
+      cat <<EOF >> ${DOCKERFILE}
+        ENV __OW_RUNTIME_DEBUG "${OW_RUNTIME_DEBUG}"
+        ENV __OW_RUNTIME_PLATFORM "${OW_RUNTIME_PLATFORM}"
+        ENV __OW_ACTION_NAME "${OW_ACTION_NAME}"
+        ENV __OW_ACTION_CODE "${OW_ACTION_CODE}"
+        ENV __OW_ACTION_MAIN "${OW_ACTION_MAIN}"
+        ENV __OW_ACTION_BINARY "${OW_ACTION_BINARY}"
+        ENV __OW_HTTP_METHODS "${OW_HTTP_METHODS}"
+        ENV __OW_ACTION_RAW "${OW_ACTION_RAW}"
+      EOF
+  - name: build-openwhisk-java-runtime
+    image: "gcr.io/kaniko-project/executor:latest"
+    args: ["--destination=${TARGET_IMAGE_NAME}:${TARGET_IMAGE_TAG}", "--dockerfile=${DOCKERFILE}"]
diff --git a/knative-build/runtimes/java/core/java8/CHANGELOG.md b/knative-build/runtimes/java/core/java8/CHANGELOG.md
new file mode 100644
index 0000000..5dfb31b
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/CHANGELOG.md
@@ -0,0 +1,42 @@
+<!--
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+-->
+
+# Java 8 OpenWhisk Runtime Container
+
+
+## 1.1.2
+Changes:
+-  Update run handler to accept more environment variables [#67](https://github.com/apache/incubator-openwhisk-runtime-java/pull/67)
+
+## 1.1.1
+Changes:
+- Adds log markers.
+- Improve error handling for improper initialization.
+
+## 1.1.0
+Changes:
+- Replaced oracle [jdk8u131-b11](http://download.oracle.com/otn-pub/java/jdk/"${VERSION}"u"${UPDATE}"-b"${BUILD}"/d54c1d3a095b4ff2b6607d096fa80163/server-jre-"${VERSION}"u"${UPDATE}"-linux-x64.tar.gz) with OpenJDK [adoptopenjdk/openjdk8-openj9:jdk8u162-b12_openj9-0.8.0](https://hub.docker.com/r/adoptopenjdk/openjdk8-openj9)
+
+## 1.0.1
+Changes:
+- Allow custom name for main Class
+
+## 1.0.0
+Changes:
+- Initial release
diff --git a/knative-build/runtimes/java/core/java8/Dockerfile b/knative-build/runtimes/java/core/java8/Dockerfile
new file mode 100644
index 0000000..3426869
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/Dockerfile
@@ -0,0 +1,40 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+
+FROM adoptopenjdk/openjdk8-openj9:x86_64-ubuntu-jdk8u181-b13_openj9-0.9.0
+
+RUN rm -rf /var/lib/apt/lists/* && apt-get clean && apt-get update \
+	&& apt-get install -y --no-install-recommends locales \
+	&& rm -rf /var/lib/apt/lists/* \
+	&& locale-gen en_US.UTF-8
+
+ENV LANG="en_US.UTF-8" \
+	LANGUAGE="en_US:en" \
+	LC_ALL="en_US.UTF-8" \
+	VERSION=8 \
+	UPDATE=162 \
+	BUILD=12
+
+ADD proxy /javaAction
+
+RUN cd /javaAction \
+	&& rm -rf .classpath .gitignore .gradle .project .settings Dockerfile build \
+	&& ./gradlew oneJar \
+	&& rm -rf /javaAction/src \
+	&& ./compileClassCache.sh
+
+CMD ["java", "-Dfile.encoding=UTF-8", "-Xshareclasses:cacheDir=/javaSharedCache,readonly", "-Xquickstart", "-jar", "/javaAction/build/libs/javaAction-all.jar"]
diff --git a/knative-build/runtimes/java/core/java8/build.gradle b/knative-build/runtimes/java/core/java8/build.gradle
new file mode 100644
index 0000000..539efcf
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/build.gradle
@@ -0,0 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+ext.dockerImageName = 'java8action'
+apply from: '../../gradle/docker.gradle'
diff --git a/knative-build/runtimes/java/core/java8/delete-build-run.sh b/knative-build/runtimes/java/core/java8/delete-build-run.sh
new file mode 100755
index 0000000..8765a31
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/delete-build-run.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+
+# Useful for local testing.
+# USE WITH CAUTION !!
+
+# Removes all previously built instances.
+docker rm $(docker ps -a -q)
+
+docker build -t javabox .
+
+echo ""
+echo "  ---- RUNNING ---- "
+echo ""
+
+docker run -i -t -p 8080:8080 javabox
diff --git a/knative-build/runtimes/java/core/java8/proxy/build.gradle b/knative-build/runtimes/java/core/java8/proxy/build.gradle
new file mode 100644
index 0000000..eb28a7c
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/build.gradle
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+apply plugin: 'java'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile 'com.google.code.gson:gson:2.6.2'
+}
+
+jar {
+    manifest {
+        attributes('Main-Class': 'org.apache.openwhisk.runtime.java.action.Proxy')
+    }
+}
+
+task oneJar(type: Jar) {
+    manifest.from jar.manifest
+    classifier = 'all'
+    from {
+        configurations.runtime.collect { it.isDirectory() ? it : zipTree(it) }
+    } {
+        exclude "META-INF/*.SF"
+        exclude "META-INF/*.DSA"
+        exclude "META-INF/*.RSA"
+    }
+    with jar
+}
diff --git a/knative-build/runtimes/java/core/java8/proxy/compileClassCache.sh b/knative-build/runtimes/java/core/java8/proxy/compileClassCache.sh
new file mode 100755
index 0000000..79272c6
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/compileClassCache.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+#### Construct Class Cache with HTTP Server classes by starting the server ####
+java "-Xshareclasses:cacheDir=/javaSharedCache/" "-Xquickstart" "-jar" "/javaAction/build/libs/javaAction-all.jar" &
+HTTP_PID=$!
+sleep 2
+kill $HTTP_PID
diff --git a/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.jar b/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.properties b/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..15c07a0
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,8 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements; and to You under the Apache License, Version 2.0.
+
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/knative-build/runtimes/java/core/java8/proxy/gradlew b/knative-build/runtimes/java/core/java8/proxy/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/knative-build/runtimes/java/core/java8/proxy/gradlew.bat b/knative-build/runtimes/java/core/java8/proxy/gradlew.bat
new file mode 100644
index 0000000..e95643d
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/JarLoader.java b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/JarLoader.java
new file mode 100644
index 0000000..03f7c90
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/JarLoader.java
@@ -0,0 +1,94 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.openwhisk.runtime.java.action;
+
+import java.io.File;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.Base64;
+import java.util.Collections;
+import java.util.Map;
+
+import com.google.gson.JsonObject;
+
+public class JarLoader extends URLClassLoader {
+    private final Class<?> mainClass;
+    private final Method mainMethod;
+
+    public static Path saveBase64EncodedFile(InputStream encoded) throws Exception {
+        Base64.Decoder decoder = Base64.getDecoder();
+
+        InputStream decoded = decoder.wrap(encoded);
+
+        File destinationFile = File.createTempFile("useraction", ".jar");
+        destinationFile.deleteOnExit();
+        Path destinationPath = destinationFile.toPath();
+
+        Files.copy(decoded, destinationPath, StandardCopyOption.REPLACE_EXISTING);
+
+        return destinationPath;
+    }
+
+    public JarLoader(Path jarPath, String entrypoint)
+            throws MalformedURLException, ClassNotFoundException, NoSuchMethodException, SecurityException {
+        super(new URL[] { jarPath.toUri().toURL() });
+
+        final String[] splittedEntrypoint = entrypoint.split("#");
+        final String entrypointClassName = splittedEntrypoint[0];
+        final String entrypointMethodName = splittedEntrypoint.length > 1 ? splittedEntrypoint[1] : "main";
+
+        this.mainClass = loadClass(entrypointClassName);
+
+        Method m = mainClass.getMethod(entrypointMethodName, new Class[] { JsonObject.class });
+        m.setAccessible(true);
+        int modifiers = m.getModifiers();
+        if (m.getReturnType() != JsonObject.class || !Modifier.isStatic(modifiers) || !Modifier.isPublic(modifiers)) {
+            throw new NoSuchMethodException("main");
+        }
+
+        this.mainMethod = m;
+    }
+
+    public JsonObject invokeMain(JsonObject arg, Map<String, String> env) throws Exception {
+        augmentEnv(env);
+        return (JsonObject) mainMethod.invoke(null, arg);
+    }
+
+    @SuppressWarnings({ "unchecked", "rawtypes" })
+    private static void augmentEnv(Map<String, String> newEnv) {
+        try {
+            for (Class cl : Collections.class.getDeclaredClasses()) {
+                if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
+                    Field field = cl.getDeclaredField("m");
+                    field.setAccessible(true);
+                    Object obj = field.get(System.getenv());
+                    Map<String, String> map = (Map<String, String>) obj;
+                    map.putAll(newEnv);
+                }
+            }
+        } catch (Exception e) {}
+    }
+}
diff --git a/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/Proxy.java b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/Proxy.java
new file mode 100644
index 0000000..e9959b9
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/Proxy.java
@@ -0,0 +1,188 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.openwhisk.runtime.java.action;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.lang.reflect.InvocationTargetException;
+import java.net.InetSocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+
+public class Proxy {
+    private HttpServer server;
+
+    private JarLoader loader = null;
+
+    public Proxy(int port) throws IOException {
+        this.server = HttpServer.create(new InetSocketAddress(port), -1);
+
+        this.server.createContext("/init", new InitHandler());
+        this.server.createContext("/run", new RunHandler());
+        this.server.setExecutor(null); // creates a default executor
+    }
+
+    public void start() {
+        server.start();
+    }
+
+    private static void writeResponse(HttpExchange t, int code, String content) throws IOException {
+        byte[] bytes = content.getBytes(StandardCharsets.UTF_8);
+        t.sendResponseHeaders(code, bytes.length);
+        OutputStream os = t.getResponseBody();
+        os.write(bytes);
+        os.close();
+    }
+
+    private static void writeError(HttpExchange t, String errorMessage) throws IOException {
+        JsonObject message = new JsonObject();
+        message.addProperty("error", errorMessage);
+        writeResponse(t, 502, message.toString());
+    }
+
+    private static void writeLogMarkers() {
+        System.out.println("XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX");
+        System.err.println("XXX_THE_END_OF_A_WHISK_ACTIVATION_XXX");
+        System.out.flush();
+        System.err.flush();
+    }
+
+    private class InitHandler implements HttpHandler {
+        public void handle(HttpExchange t) throws IOException {
+            if (loader != null) {
+                String errorMessage = "Cannot initialize the action more than once.";
+                System.err.println(errorMessage);
+                Proxy.writeError(t, errorMessage);
+                return;
+            }
+
+            try {
+                InputStream is = t.getRequestBody();
+                JsonParser parser = new JsonParser();
+                JsonElement ie = parser.parse(new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8)));
+                JsonObject inputObject = ie.getAsJsonObject();
+
+                if (inputObject.has("value")) {
+                    JsonObject message = inputObject.getAsJsonObject("value");
+                    if (message.has("main") && message.has("code")) {
+                        String mainClass = message.getAsJsonPrimitive("main").getAsString();
+                        String base64Jar = message.getAsJsonPrimitive("code").getAsString();
+
+                        // FIXME: this is obviously not very useful. The idea is that we
+                        // will implement/use a streaming parser for the incoming JSON object so that we
+                        // can stream the contents of the jar straight to a file.
+                        InputStream jarIs = new ByteArrayInputStream(base64Jar.getBytes(StandardCharsets.UTF_8));
+
+                        // Save the bytes to a file.
+                        Path jarPath = JarLoader.saveBase64EncodedFile(jarIs);
+
+                        // Start up the custom classloader. This also checks that the
+                        // main method exists.
+                        loader = new JarLoader(jarPath, mainClass);
+
+                        Proxy.writeResponse(t, 200, "OK");
+                        return;
+                    }
+                }
+
+                Proxy.writeError(t, "Missing main/no code to execute.");
+                return;
+            } catch (Exception e) {
+                e.printStackTrace(System.err);
+                writeLogMarkers();
+                Proxy.writeError(t, "An error has occurred (see logs for details): " + e);
+                return;
+            }
+        }
+    }
+
+    private class RunHandler implements HttpHandler {
+        public void handle(HttpExchange t) throws IOException {
+            if (loader == null) {
+                Proxy.writeError(t, "Cannot invoke an uninitialized action.");
+                return;
+            }
+
+            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            SecurityManager sm = System.getSecurityManager();
+
+            try {
+                InputStream is = t.getRequestBody();
+                JsonParser parser = new JsonParser();
+                JsonObject body = parser.parse(new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))).getAsJsonObject();
+                JsonObject inputObject = body.getAsJsonObject("value");
+
+                HashMap<String, String> env = new HashMap<String, String>();
+                Set<Map.Entry<String, JsonElement>> entrySet = body.entrySet();
+                for(Map.Entry<String, JsonElement> entry : entrySet){
+                    try {
+                        if(!entry.getKey().equalsIgnoreCase("value"))
+                            env.put(String.format("__OW_%s", entry.getKey().toUpperCase()), entry.getValue().getAsString());
+                    } catch (Exception e) {}
+                }
+
+                Thread.currentThread().setContextClassLoader(loader);
+                System.setSecurityManager(new WhiskSecurityManager());
+
+                // User code starts running here.
+                JsonObject output = loader.invokeMain(inputObject, env);
+                // User code finished running here.
+
+                if (output == null) {
+                    throw new NullPointerException("The action returned null");
+                }
+
+                Proxy.writeResponse(t, 200, output.toString());
+                return;
+            } catch (InvocationTargetException ite) {
+                // These are exceptions from the action, wrapped in ite because
+                // of reflection
+                Throwable underlying = ite.getCause();
+                underlying.printStackTrace(System.err);
+                Proxy.writeError(t,
+                        "An error has occured while invoking the action (see logs for details): " + underlying);
+            } catch (Exception e) {
+                e.printStackTrace(System.err);
+                Proxy.writeError(t, "An error has occurred (see logs for details): " + e);
+            } finally {
+                writeLogMarkers();
+                System.setSecurityManager(sm);
+                Thread.currentThread().setContextClassLoader(cl);
+            }
+        }
+    }
+
+    public static void main(String args[]) throws Exception {
+        Proxy proxy = new Proxy(8080);
+        proxy.start();
+    }
+}
diff --git a/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/WhiskSecurityManager.java b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/WhiskSecurityManager.java
new file mode 100644
index 0000000..f9b93ea
--- /dev/null
+++ b/knative-build/runtimes/java/core/java8/proxy/src/main/java/org/apache/openwhisk/runtime/java/action/WhiskSecurityManager.java
@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.openwhisk.runtime.java.action;
+
+import java.security.Permission;
+
+/**
+ * A `SecurityManager` installed when executing action code. The purpose here
+ * is not so much to prevent malicious behavior than it is to prevent users from
+ * shooting themselves in the foot. In particular, anything that kills the JVM
+ * will result in unhelpful action error messages.
+ */
+public class WhiskSecurityManager extends SecurityManager {
+    @Override
+    public void checkPermission(Permission p) {
+        // Not throwing means accepting anything.
+    }
+
+    @Override
+    public void checkPermission(Permission p, Object ctx) {
+        // Not throwing means accepting anything.
+    }
+
+    @Override
+    public void checkExit(int status) {
+        super.checkExit(status);
+        throw new SecurityException("System.exit(" + status + ") called from within an action.");
+    }
+}
diff --git a/knative-build/runtimes/java/gradle/README.md b/knative-build/runtimes/java/gradle/README.md
new file mode 100644
index 0000000..14842f1
--- /dev/null
+++ b/knative-build/runtimes/java/gradle/README.md
@@ -0,0 +1,64 @@
+<!--
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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.
+#
+-->
+
+# Gradle
+
+Gradle is used to build OpenWhisk. It does not need to be pre-installed as it installs itself using the [Gradle Wrapper](https://docs.gradle.org/current/userguide/gradle_wrapper.html). To use it without installing, simply invoke the `gradlew` command at the root of the repository. You can also install `gradle` via [`apt`](http://linuxg.net/how-to-install-gradle-2-1-on-ubuntu-14-10-ubuntu-14-04-ubuntu-12-04-and-derivatives/) on Ubuntu or [`brew`](http://www.brewformulas.org/Gradle) on Mac. In the following we use `gradle` and `gradlew` as synonymous.
+
+## Usage
+
+In general, project level properties are set via `-P{propertyName}={propertyValue}`. A task is called via `gradle {taskName}` and a subproject task is called via `gradle :path:to:subproject:{taskName}`. To run tasks in parallel, use the `--parallel` flag (**Note:** It's an incubating feature and might break stuff).
+
+### Build
+
+To build all Docker images use `gradle distDocker` at the top level project, to build a specific component use `gradle :core:controller:distDocker`.
+
+Project level options that can be used on `distDocker`:
+
+- `dockerImageName` (*required*): The name of the image to build (e.g. whisk/controller)
+- `dockerHost` (*optional*): The docker host to run commands on, default behaviour is docker's own `DOCKER_HOST` environment variable
+- `dockerRegistry` (*optional*): The registry to push to
+- `dockerImageTag` (*optional*, default 'latest'): The tag for the image
+- `dockerTimeout` (*optional*, default 240): Timeout for docker operations in seconds
+- `dockerRetries` (*optional*, default 3): How many times to retry docker operations
+- `dockerBinary` (*optional*, default `docker`): The binary to execute docker commands
+
+### Test
+
+To run tests one uses the `test` task. OpenWhisk consolidates tests into a single `tests` project. Hence the command to run all tests is `gradle :tests:test`.
+
+It is possible to run specific tests using [Gradle testfilters](https://docs.gradle.org/current/userguide/java_plugin.html#test_filtering). For example `gradle :tests:test --tests "your.package.name.TestClass.evenMethodName"`. Wildcard `*` may be used anywhere.
+
+## Build your own `build.gradle`
+In Gradle, most of the tasks we use are default tasks provided by plugins in Gradle. The [`scala` Plugin](https://docs.gradle.org/current/userguide/scala_plugin.html) for example includes tasks, that are needed to build Scala projects. Moreover, Gradle is aware of *Applications*. The [`application` Plugin](https://docs.gradle.org/current/userguide/application_plugin.html) provides tasks that are required to distribute a self-contained application. When `application` and `scala` are used in conjunction, they hook into each other and provide the tasks needed to distribute a Scala application. `distTar` for example compiles the Scala code, creates a jar containing the compiled classes and resources and creates a Tarball including that jar and all of its dependencies (defined in the dependencies section of `build.gradle`). It also creates a start-script which correctly sets the classpath for all those dependencies and starts the app.
+
+In OpenWhisk, we want to distribute our application via Docker images. Hence we wrote a "plugin" that creates the task `distDocker`. That task will build an image from the `Dockerfile` that is located next to the `build.gradle` it is called from, for example Controller's `Dockerfile` and `build.gradle` are both located at `core/controller`.
+
+If you want to create a new `build.gradle` for your component, simply put the `Dockerfile` right next to it and include `docker.gradle` by using
+
+```
+ext.dockerImageName = 'openwwhisk/{IMAGENAME}'
+apply from: 'path/to/docker.gradle'
+```
+
+If your component needs to be build before you can build the image, make `distDocker` depend on any task needed to run before it, for example:
+
+```
+distDocker.dependsOn ':common:scala:distDocker', 'distTar'
+```
diff --git a/knative-build/runtimes/java/gradle/docker.gradle b/knative-build/runtimes/java/gradle/docker.gradle
new file mode 100644
index 0000000..6ad6850
--- /dev/null
+++ b/knative-build/runtimes/java/gradle/docker.gradle
@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+import groovy.time.*
+
+/**
+ * Utility to build docker images based in gradle projects
+ *
+ * This extends gradle's 'application' plugin logic with a 'distDocker' task which builds
+ * a docker image from the Dockerfile of the project that applies this file. The image
+ * is automatically tagged and pushed if a tag and/or a registry is given.
+ *
+ * Parameters that can be set on project level:
+ * - dockerImageName (required): The name of the image to build (e.g. controller)
+ * - dockerRegistry (optional): The registry to push to
+ * - dockerImageTag (optional, default 'latest'): The tag for the image
+ * - dockerImagePrefix (optional, default 'whisk'): The prefix for the image,
+ *       'controller' becomes 'whisk/controller' per default
+ * - dockerTimeout (optional, default 840): Timeout for docker operations in seconds
+ * - dockerRetries (optional, default 3): How many times to retry docker operations
+ * - dockerBinary (optional, default 'docker'): The binary to execute docker commands
+ * - dockerBuildArgs (options, default ''): Project specific custom docker build arguments
+ * - dockerHost (optional): The docker host to run commands on, default behaviour is
+ *       docker's own DOCKER_HOST environment variable
+ */
+
+ext {
+    dockerRegistry = project.hasProperty('dockerRegistry') ? dockerRegistry + '/' : ''
+    dockerImageTag = project.hasProperty('dockerImageTag') ? dockerImageTag : 'latest'
+    dockerImagePrefix = project.hasProperty('dockerImagePrefix') ? dockerImagePrefix : 'whisk'
+    dockerTimeout = project.hasProperty('dockerTimeout') ? dockerTimeout.toInteger() : 840
+    dockerRetries = project.hasProperty('dockerRetries') ? dockerRetries.toInteger() : 3
+    dockerBinary = project.hasProperty('dockerBinary') ? [dockerBinary] : ['docker']
+    dockerBuildArg = ['build']
+}
+ext.dockerTaggedImageName = dockerRegistry + dockerImagePrefix + '/' + dockerImageName + ':' + dockerImageTag
+
+if(project.hasProperty('dockerHost')) {
+    dockerBinary += ['--host', project.dockerHost]
+}
+
+if(project.hasProperty('dockerBuildArgs')) {
+    dockerBuildArgs.each { arg  ->
+        dockerBuildArg += ['--build-arg', arg]
+    }
+}
+
+task distDocker {
+    doLast {
+        def start = new Date()
+        def cmd = dockerBinary + dockerBuildArg + ['-t', dockerImageName, project.buildscript.sourceFile.getParentFile().getAbsolutePath()]
+        retry(cmd, dockerRetries, dockerTimeout)
+        println("Building '${dockerImageName}' took ${TimeCategory.minus(new Date(), start)}")
+    }
+}
+task tagImage {
+    doLast {
+        def versionString = (dockerBinary + ['-v']).execute().text
+        def matched = (versionString =~ /(\d+)\.(\d+)\.(\d+)/)
+
+        def major = matched[0][1] as int
+        def minor = matched[0][2] as int
+
+        def dockerCmd = ['tag']
+        if(major == 1 && minor < 12) {
+            dockerCmd += ['-f']
+        }
+        retry(dockerBinary + dockerCmd + [dockerImageName, dockerTaggedImageName], dockerRetries, dockerTimeout)
+    }
+}
+
+task pushImage {
+    doLast {
+        def cmd = dockerBinary + ['push', dockerTaggedImageName]
+        retry(cmd, dockerRetries, dockerTimeout)
+    }
+}
+pushImage.dependsOn tagImage
+pushImage.onlyIf { dockerRegistry != '' }
+distDocker.finalizedBy pushImage
+
+def retry(cmd, retries, timeout) {
+    println("${new Date()}: Executing '${cmd.join(" ")}'")
+    def proc = cmd.execute()
+    proc.consumeProcessOutput(System.out, System.err)
+    proc.waitForOrKill(timeout * 1000)
+    if(proc.exitValue() != 0) {
+        def message = "${new Date()}: Command '${cmd.join(" ")}' failed with exitCode ${proc.exitValue()}"
+        if(proc.exitValue() == 143) { // 143 means the process was killed (SIGTERM signal)
+            message = "${new Date()}: Command '${cmd.join(" ")}' was killed after ${timeout} seconds"
+        }
+
+        if(retries > 1) {
+            println("${message}, ${retries-1} retries left, retrying...")
+            retry(cmd, retries-1, timeout)
+        }
+        else {
+            println("${message}, no more retries left, aborting...")
+            throw new GradleException(message)
+        }
+    }
+}
diff --git a/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.jar b/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
--- /dev/null
+++ b/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.properties b/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..15c07a0
--- /dev/null
+++ b/knative-build/runtimes/java/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,8 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements; and to You under the Apache License, Version 2.0.
+
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/knative-build/runtimes/java/gradlew b/knative-build/runtimes/java/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/knative-build/runtimes/java/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/knative-build/runtimes/java/gradlew.bat b/knative-build/runtimes/java/gradlew.bat
new file mode 100644
index 0000000..e95643d
--- /dev/null
+++ b/knative-build/runtimes/java/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/knative-build/runtimes/java/settings.gradle b/knative-build/runtimes/java/settings.gradle
new file mode 100644
index 0000000..464ae37
--- /dev/null
+++ b/knative-build/runtimes/java/settings.gradle
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+include 'tests'
+
+include 'core:java8'
+include 'core:java8:proxy'
+
+rootProject.name = 'runtime-java'
+
+gradle.ext.openwhisk = [
+        version: '1.0.0-SNAPSHOT'
+]
+
+gradle.ext.scala = [
+    version: '2.12.7',
+    compileFlags: ['-feature', '-unchecked', '-deprecation', '-Xfatal-warnings', '-Ywarn-unused-import']
+]
+
+gradle.ext.scalafmt = [
+    version: '1.5.0',
+    config: new File(rootProject.projectDir, '.scalafmt.conf')
+]