diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0f90610
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+build/
+dest/
+.gradle/
+.idea/
+*.iml
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0548b84
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# gradle-tute
+
+- Install
+    ```
+    brew install gradle
+    gradle --version
+    ```
+
+- At most, the `build.gradle` can contain nothing
+    ```
+    touch build.gradle
+    gradle tasks
+    gradle tasks --all
+    ```
+
+- Writing Custom Gradle Tasks
+
+    - https://guides.gradle.org/writing-gradle-tasks/
+    - If not the default `build.gradle`, use `-b` flag.
+    ```
+    gradle -b meow.gradle tasks
+    gradle -b hello.gradle tasks
+    gradle -b greeting.gradle tasks
+    ```
diff --git a/basic-demo/README.md b/basic-demo/README.md
new file mode 100644
index 0000000..7f3640a
--- /dev/null
+++ b/basic-demo/README.md
@@ -0,0 +1,19 @@
+Creating New Gradle Builds
+
+https://guides.gradle.org/creating-new-gradle-builds/
+
+```
+mkdir basic-demo
+cd basic-demo
+touch build.gradle
+tree
+gradle tasks
+gradle wrapper
+tree
+./gradlew properties
+./gradlew tasks --all
+```
+
+Note: Plugins Block 
+
+https://docs.gradle.org/4.2/userguide/plugins.html
\ No newline at end of file
diff --git a/basic-demo/build.gradle b/basic-demo/build.gradle
new file mode 100644
index 0000000..87ecc22
--- /dev/null
+++ b/basic-demo/build.gradle
@@ -0,0 +1,22 @@
+// Plugins Block  https://docs.gradle.org/4.2/userguide/plugins.html
+plugins {
+    id 'base'
+}
+
+description = 'A trivial Gradle build'
+version = '1.0'
+
+task copy(type: Copy) {
+    from 'src'
+    into 'dest'
+}
+
+task zip(type: Zip) {
+    from 'src'
+}
+
+task hello {
+    doLast {
+        println 'Hello, World!'
+    }
+}
\ No newline at end of file
diff --git a/basic-demo/gradle/wrapper/gradle-wrapper.jar b/basic-demo/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..598aa07
Binary files /dev/null and b/basic-demo/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/basic-demo/gradle/wrapper/gradle-wrapper.properties b/basic-demo/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..ddea015
--- /dev/null
+++ b/basic-demo/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sun Sep 24 12:33:54 AEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.2-bin.zip
diff --git a/basic-demo/gradlew b/basic-demo/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/basic-demo/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/basic-demo/gradlew.bat b/basic-demo/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/basic-demo/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/basic-demo/src/myfile.txt b/basic-demo/src/myfile.txt
new file mode 100644
index 0000000..8ab686e
--- /dev/null
+++ b/basic-demo/src/myfile.txt
@@ -0,0 +1 @@
+Hello, World!
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..c7c2b5f
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1 @@
+// The Sound of Silence ;)
\ No newline at end of file
diff --git a/greeting.gradle b/greeting.gradle
new file mode 100644
index 0000000..f1799c6
--- /dev/null
+++ b/greeting.gradle
@@ -0,0 +1,24 @@
+// Custom task type Greeting
+class Greeting extends DefaultTask {
+    String message
+    String recipient
+    
+    @TaskAction
+    void sayGreeting() {
+        println "${message}, ${recipient}!"
+    }
+}
+
+task greeting (type: Greeting) {
+    group 'Welcome'
+    description 'Produces a world greeting'
+    message 'Greeting'
+    recipient 'World'
+}
+
+task gutenTag( type : Greeting ) {
+    group 'Welcome'
+    description 'Produces a German greeting'
+    message 'Guten Tag'
+    recipient 'Welt'
+}
\ No newline at end of file
diff --git a/hello.gradle b/hello.gradle
new file mode 100644
index 0000000..057d08d
--- /dev/null
+++ b/hello.gradle
@@ -0,0 +1,9 @@
+// Grouping
+task hello {
+    group 'Welcome'
+    description 'Produces a greeting'
+
+    doLast {
+        println 'Hello, World'
+    }
+}
\ No newline at end of file
diff --git a/java-demo/README.md b/java-demo/README.md
new file mode 100644
index 0000000..ca60ec1
--- /dev/null
+++ b/java-demo/README.md
@@ -0,0 +1,26 @@
+Building Java Applications
+
+- https://guides.gradle.org/building-java-applications/
+
+    ```
+    mkdir java-demo
+    cd java-demo
+    gradle init --type java-application
+    tree
+    ./gradlew build
+    tree build
+    ./gradlew tasks
+    ./gradlew run
+    ```
+
+- Observe the generated files using Gradle `init` build script for `java-application` type.
+
+- Also check Java quickstart using Java plugin 
+    - a monolithic-single project 
+    - multi-project (multi-modules) Java build 
+    - https://docs.gradle.org/current/userguide/tutorial_java_projects.html
+    
+- More articles on Java + Gradle:
+    - https://spring.io/guides/gs/gradle/
+    - http://nikgrozev.com/2017/02/10/gradle-quickstart/
+    - https://www.petrikainulainen.net/getting-started-with-gradle/
\ No newline at end of file
diff --git a/java-demo/build.gradle b/java-demo/build.gradle
new file mode 100644
index 0000000..dd3aa41
--- /dev/null
+++ b/java-demo/build.gradle
@@ -0,0 +1,32 @@
+/*
+ * This build file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java project to get you started.
+ * For more details take a look at the Java Quickstart chapter in the Gradle
+ * user guide available at https://docs.gradle.org/4.0.2/userguide/tutorial_java_projects.html
+ */
+
+// Apply the java plugin to add support for Java
+apply plugin: 'java'
+
+// Apply the application plugin to add support for building an application
+apply plugin: 'application'
+
+// In this section you declare where to find the dependencies of your project
+repositories {
+    // Use jcenter for resolving your dependencies.
+    // You can declare any Maven/Ivy/file repository here.
+    jcenter()
+}
+
+dependencies {
+    // This dependency is found on compile classpath of this component and consumers.
+    compile 'com.google.guava:guava:21.0'
+
+    // Use JUnit test framework
+    testCompile 'junit:junit:4.12'
+}
+
+// Define the main class for the application
+mainClassName = 'App'
+
diff --git a/java-demo/gradle/wrapper/gradle-wrapper.jar b/java-demo/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..64a7bf8
Binary files /dev/null and b/java-demo/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/java-demo/gradle/wrapper/gradle-wrapper.properties b/java-demo/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..bc4dcfa
--- /dev/null
+++ b/java-demo/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sun Sep 24 13:40:21 AEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.2-bin.zip
diff --git a/java-demo/gradlew b/java-demo/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/java-demo/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/java-demo/gradlew.bat b/java-demo/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/java-demo/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/java-demo/settings.gradle b/java-demo/settings.gradle
new file mode 100644
index 0000000..6d6b2bc
--- /dev/null
+++ b/java-demo/settings.gradle
@@ -0,0 +1,18 @@
+/*
+ * This settings file was generated by the Gradle 'init' task.
+ *
+ * The settings file is used to specify which projects to include in your build.
+ * In a single project build this file can be empty or even removed.
+ *
+ * Detailed information about configuring a multi-project build in Gradle can be found
+ * in the user guide at https://docs.gradle.org/4.0.2/userguide/multi_project_builds.html
+ */
+
+/*
+// To declare projects as part of a multi-project build use the 'include' method
+include 'shared'
+include 'api'
+include 'services:webservice'
+*/
+
+rootProject.name = 'java-demo'
diff --git a/java-demo/src/main/java/App.java b/java-demo/src/main/java/App.java
new file mode 100644
index 0000000..bd9132e
--- /dev/null
+++ b/java-demo/src/main/java/App.java
@@ -0,0 +1,12 @@
+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+public class App {
+    public String getGreeting() {
+        return "Hello world.";
+    }
+
+    public static void main(String[] args) {
+        System.out.println(new App().getGreeting());
+    }
+}
diff --git a/java-demo/src/test/java/AppTest.java b/java-demo/src/test/java/AppTest.java
new file mode 100644
index 0000000..e611fc7
--- /dev/null
+++ b/java-demo/src/test/java/AppTest.java
@@ -0,0 +1,12 @@
+/*
+ * This Java source file was generated by the Gradle 'init' task.
+ */
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class AppTest {
+    @Test public void testAppHasAGreeting() {
+        App classUnderTest = new App();
+        assertNotNull("app should have a greeting", classUnderTest.getGreeting());
+    }
+}
diff --git a/meow.gradle b/meow.gradle
new file mode 100644
index 0000000..2aa82b9
--- /dev/null
+++ b/meow.gradle
@@ -0,0 +1,5 @@
+task meow {
+    doLast {
+        println 'Meow!'
+    }
+}
\ No newline at end of file
diff --git a/rule-based-model/README.md b/rule-based-model/README.md
new file mode 100644
index 0000000..1385aaa
--- /dev/null
+++ b/rule-based-model/README.md
@@ -0,0 +1,3 @@
+Rule based model configuration
+
+https://docs.gradle.org/4.2/userguide/pt06.html
\ No newline at end of file
diff --git a/rule-based-model/build.gradle b/rule-based-model/build.gradle
new file mode 100644
index 0000000..123cda0
--- /dev/null
+++ b/rule-based-model/build.gradle
@@ -0,0 +1,28 @@
+@Managed
+interface Person {
+  void setFirstName(String name)
+  String getFirstName()
+
+  void setLastName(String name)
+  String getLastName()
+}
+
+class PersonRules extends RuleSource {
+  @Model void person(Person p) {}
+
+  //Create a rule that modifies a Person and takes no other inputs
+  @Mutate void setFirstName(Person p) {
+    p.firstName = "John"
+  }
+
+  //Create a rule that modifies a ModelMap<Task> and takes as input a Person
+  @Mutate void createHelloTask(ModelMap<Task> tasks, Person p) {
+    tasks.create("hello") {
+      doLast {
+        println "Hello $p.firstName $p.lastName!"
+      }
+    }
+  }
+}
+
+apply plugin: PersonRules
\ No newline at end of file