diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..639900d
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..32c2b0f
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/training-java-basic.iml b/.idea/training-java-basic.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/training-java-basic.iml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/onboarding-java/.gitignore b/onboarding-java/.gitignore
new file mode 100644
index 0000000..549e00a
--- /dev/null
+++ b/onboarding-java/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
diff --git a/onboarding-java/.mvn/wrapper/maven-wrapper.jar b/onboarding-java/.mvn/wrapper/maven-wrapper.jar
new file mode 100644
index 0000000..c1dd12f
Binary files /dev/null and b/onboarding-java/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/onboarding-java/.mvn/wrapper/maven-wrapper.properties b/onboarding-java/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..b7cb93e
--- /dev/null
+++ b/onboarding-java/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.4/apache-maven-3.8.4-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
diff --git a/onboarding-java/mvnw b/onboarding-java/mvnw
new file mode 100644
index 0000000..8a8fb22
--- /dev/null
+++ b/onboarding-java/mvnw
@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# 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
+#
+# https://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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+# JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+# M2_HOME - location of maven2's installed home dir
+# MAVEN_OPTS - parameters passed to the Java VM when running Maven
+# e.g. to debug Maven itself, use
+# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+ if [ -f /usr/local/etc/mavenrc ] ; then
+ . /usr/local/etc/mavenrc
+ fi
+
+ if [ -f /etc/mavenrc ] ; then
+ . /etc/mavenrc
+ fi
+
+ if [ -f "$HOME/.mavenrc" ] ; then
+ . "$HOME/.mavenrc"
+ fi
+
+fi
+
+# OS specific support. $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+ CYGWIN*) cygwin=true ;;
+ MINGW*) mingw=true;;
+ Darwin*) darwin=true
+ # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+ # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+ if [ -z "$JAVA_HOME" ]; then
+ if [ -x "/usr/libexec/java_home" ]; then
+ export JAVA_HOME="`/usr/libexec/java_home`"
+ else
+ export JAVA_HOME="/Library/Java/Home"
+ fi
+ fi
+ ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+ if [ -r /etc/gentoo-release ] ; then
+ JAVA_HOME=`java-config --jre-home`
+ fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+ ## resolve links - $0 may be a link to maven's home
+ 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"`/$link"
+ fi
+ done
+
+ saveddir=`pwd`
+
+ M2_HOME=`dirname "$PRG"`/..
+
+ # make it fully qualified
+ M2_HOME=`cd "$M2_HOME" && pwd`
+
+ cd "$saveddir"
+ # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --unix "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME="`(cd "$M2_HOME"; pwd)`"
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+ javaExecutable="`which javac`"
+ if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+ # readlink(1) is not available as standard on Solaris 10.
+ readLink=`which readlink`
+ if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+ if $darwin ; then
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+ else
+ javaExecutable="`readlink -f \"$javaExecutable\"`"
+ fi
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+ JAVA_HOME="$javaHome"
+ export JAVA_HOME
+ fi
+ fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+ 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
+ else
+ JAVACMD="`\\unset -f command; \\command -v java`"
+ fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+ echo "Error: JAVA_HOME is not defined correctly." >&2
+ echo " We cannot execute $JAVACMD" >&2
+ exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+ echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+ if [ -z "$1" ]
+ then
+ echo "Path not specified to find_maven_basedir"
+ return 1
+ fi
+
+ basedir="$1"
+ wdir="$1"
+ while [ "$wdir" != '/' ] ; do
+ if [ -d "$wdir"/.mvn ] ; then
+ basedir=$wdir
+ break
+ fi
+ # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+ if [ -d "${wdir}" ]; then
+ wdir=`cd "$wdir/.."; pwd`
+ fi
+ # end of workaround
+ done
+ echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+ if [ -f "$1" ]; then
+ echo "$(tr -s '\n' ' ' < "$1")"
+ fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+ exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found .mvn/wrapper/maven-wrapper.jar"
+ fi
+else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+ fi
+ if [ -n "$MVNW_REPOURL" ]; then
+ jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ else
+ jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ fi
+ while IFS="=" read key value; do
+ case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+ esac
+ done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Downloading from: $jarUrl"
+ fi
+ wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+ if $cygwin; then
+ wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+ fi
+
+ if command -v wget > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found wget ... using wget"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ else
+ wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ fi
+ elif command -v curl > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found curl ... using curl"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ curl -o "$wrapperJarPath" "$jarUrl" -f
+ else
+ curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+ fi
+
+ else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Falling back to using Java to download"
+ fi
+ javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+ # For Cygwin, switch paths to Windows format before running javac
+ if $cygwin; then
+ javaClass=`cygpath --path --windows "$javaClass"`
+ fi
+ if [ -e "$javaClass" ]; then
+ if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Compiling MavenWrapperDownloader.java ..."
+ fi
+ # Compiling the Java class
+ ("$JAVA_HOME/bin/javac" "$javaClass")
+ fi
+ if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ # Running the downloader
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Running MavenWrapperDownloader.java ..."
+ fi
+ ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+ fi
+ fi
+ fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+ echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --path --windows "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+ [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+ MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+ $MAVEN_OPTS \
+ $MAVEN_DEBUG_OPTS \
+ -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+ "-Dmaven.home=${M2_HOME}" \
+ "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+ ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/onboarding-java/mvnw.cmd b/onboarding-java/mvnw.cmd
new file mode 100644
index 0000000..1d8ab01
--- /dev/null
+++ b/onboarding-java/mvnw.cmd
@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+ IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Found %WRAPPER_JAR%
+ )
+) else (
+ if not "%MVNW_REPOURL%" == "" (
+ SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ )
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Couldn't find %WRAPPER_JAR%, downloading it ...
+ echo Downloading from: %DOWNLOAD_URL%
+ )
+
+ powershell -Command "&{"^
+ "$webclient = new-object System.Net.WebClient;"^
+ "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+ "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+ "}"^
+ "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+ "}"
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Finished downloading %WRAPPER_JAR%
+ )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+ %JVM_CONFIG_MAVEN_PROPS% ^
+ %MAVEN_OPTS% ^
+ %MAVEN_DEBUG_OPTS% ^
+ -classpath %WRAPPER_JAR% ^
+ "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+ %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/onboarding-java/pom.xml b/onboarding-java/pom.xml
new file mode 100644
index 0000000..deb1300
--- /dev/null
+++ b/onboarding-java/pom.xml
@@ -0,0 +1,41 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 2.6.4
+
+
+ com.gdn.onboarding.java
+ onboarding-java
+ 0.0.1-SNAPSHOT
+ Onboarding Java
+ Demo project for Spring Boot
+
+ 1.8
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+
+
diff --git a/onboarding-java/src/main/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplication.java b/onboarding-java/src/main/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplication.java
new file mode 100644
index 0000000..cdcf6c2
--- /dev/null
+++ b/onboarding-java/src/main/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplication.java
@@ -0,0 +1,13 @@
+package com.gdn.onboarding.java.onboardingjava;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class OnboardingJavaApplication {
+
+ public static void main(String[] args) {
+ SpringApplication.run(OnboardingJavaApplication.class, args);
+ }
+
+}
diff --git a/onboarding-java/src/main/java/project/BubbleSort.java b/onboarding-java/src/main/java/project/BubbleSort.java
new file mode 100644
index 0000000..fcae0d9
--- /dev/null
+++ b/onboarding-java/src/main/java/project/BubbleSort.java
@@ -0,0 +1,23 @@
+package project;
+
+
+public class BubbleSort {
+ public BubbleSort() {
+
+ }
+ public Integer[] sort(Integer[] array){
+ if(array == null){
+ throw new IllegalArgumentException("Parameter cannot be null");
+ }
+ for(int i = 0 ; i < array.length ; ++i){
+ for(int j = 0; j < i ; ++j){
+ if(array[i] < array[j]){
+ Integer temp = array[i];
+ array[i] = array[j];
+ array[j] = temp;
+ }
+ }
+ }
+ return array;
+ }
+}
diff --git a/onboarding-java/src/main/java/project/Calendar.java b/onboarding-java/src/main/java/project/Calendar.java
new file mode 100644
index 0000000..51c80f1
--- /dev/null
+++ b/onboarding-java/src/main/java/project/Calendar.java
@@ -0,0 +1,40 @@
+package project;
+
+public class Calendar {
+ public Calendar() {
+
+ }
+ public String convertMonth(Integer month){
+ if(month == null){
+ throw new IllegalArgumentException("Parameter cannot be null");
+ }
+ switch(month){
+ case 1:
+ return "January";
+ case 2:
+ return "February";
+ case 3:
+ return "March";
+ case 4:
+ return "April";
+ case 5:
+ return "May";
+ case 6:
+ return "June";
+ case 7:
+ return "July";
+ case 8:
+ return "August";
+ case 9:
+ return "September";
+ case 10:
+ return "October";
+ case 11:
+ return "November";
+ case 12:
+ return "December";
+ default:
+ throw new IllegalArgumentException("Invalid parameters");
+ }
+ }
+}
diff --git a/onboarding-java/src/main/java/project/Factorial.java b/onboarding-java/src/main/java/project/Factorial.java
new file mode 100644
index 0000000..875ac78
--- /dev/null
+++ b/onboarding-java/src/main/java/project/Factorial.java
@@ -0,0 +1,19 @@
+package project;
+
+public class Factorial {
+ public Factorial() {
+ }
+ public Integer compute(Integer value){
+ if(value == null){
+ throw new IllegalArgumentException("Parameters cannot be null");
+ }
+ if(value < 0){
+ throw new IllegalArgumentException("Parameters cannot be negative value");
+ }
+ Integer result = 1;
+ for(Integer i = 2; i <= value ; ++i){
+ result *= i;
+ }
+ return result;
+ }
+}
diff --git a/onboarding-java/src/main/java/project/LetterGrade.java b/onboarding-java/src/main/java/project/LetterGrade.java
new file mode 100644
index 0000000..e0ac918
--- /dev/null
+++ b/onboarding-java/src/main/java/project/LetterGrade.java
@@ -0,0 +1,30 @@
+package project;
+
+public class LetterGrade {
+ public LetterGrade() {
+
+ }
+ public String convertGrade(Integer grade){
+ validateNull(grade);
+ if(grade >= 90){
+ return "A";
+ }
+ else if(grade >= 75){
+ return "A-";
+ }
+ else if(grade >= 65){
+ return "B";
+ }
+ else if(grade >= 55){
+ return "C";
+ }
+ else{
+ return "D";
+ }
+ }
+ private void validateNull(Integer grade){
+ if(grade == null){
+ throw new IllegalArgumentException("Parameters cannot be null");
+ }
+ }
+}
diff --git a/onboarding-java/src/main/java/project/ToDoList.java b/onboarding-java/src/main/java/project/ToDoList.java
new file mode 100644
index 0000000..b9ca3b0
--- /dev/null
+++ b/onboarding-java/src/main/java/project/ToDoList.java
@@ -0,0 +1,33 @@
+package project;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ToDoList {
+ private List tasks;
+
+ public ToDoList() {
+ tasks = new ArrayList<>();
+ }
+ public List getTasks(){
+ return this.tasks;
+ }
+ public void add(String task){
+ validateNull(task);
+ tasks.add(task);
+ }
+ public void remove(String task){
+ validateNull(task);
+ tasks.remove(task);
+ }
+ public void print(){
+ for (String task : tasks) {
+ System.out.println(task);
+ }
+ }
+ private void validateNull(String task){
+ if(task == null){
+ throw new IllegalArgumentException("Parameters cannot be null");
+ }
+ }
+}
diff --git a/onboarding-java/src/main/resources/application.properties b/onboarding-java/src/main/resources/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/onboarding-java/src/main/resources/application.properties
@@ -0,0 +1 @@
+
diff --git a/onboarding-java/src/test/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplicationTests.java b/onboarding-java/src/test/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplicationTests.java
new file mode 100644
index 0000000..81da910
--- /dev/null
+++ b/onboarding-java/src/test/java/com/gdn/onboarding/java/onboardingjava/OnboardingJavaApplicationTests.java
@@ -0,0 +1,13 @@
+package com.gdn.onboarding.java.onboardingjava;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class OnboardingJavaApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}
diff --git a/onboarding-java/src/test/java/project/BubbleSortTest.java b/onboarding-java/src/test/java/project/BubbleSortTest.java
new file mode 100644
index 0000000..0d1fb89
--- /dev/null
+++ b/onboarding-java/src/test/java/project/BubbleSortTest.java
@@ -0,0 +1,28 @@
+package project;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class BubbleSortTest {
+ public static final BubbleSort bubbleSort = new BubbleSort();
+
+ @Test
+ public void test_success(){
+ Integer[] test_data = {1,5,2,3,4};
+ Integer[] result = bubbleSort.sort(test_data);
+
+ Integer[] expected = {1,2,3,4,5};
+ Assertions.assertArrayEquals(expected, result);
+ }
+
+ @Test
+ public void test_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ Integer[] result = bubbleSort.sort(null);
+ Integer[] expected = {1,2,3,4,5};
+ Assertions.assertEquals(expected, result);
+ });
+ }
+}
\ No newline at end of file
diff --git a/onboarding-java/src/test/java/project/CalendarTest.java b/onboarding-java/src/test/java/project/CalendarTest.java
new file mode 100644
index 0000000..94e44a5
--- /dev/null
+++ b/onboarding-java/src/test/java/project/CalendarTest.java
@@ -0,0 +1,86 @@
+package project;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class CalendarTest {
+
+ public static final Calendar calendar = new Calendar();
+
+ @Test
+ public void testJan_success(){
+ String result = calendar.convertMonth(1);
+ Assertions.assertEquals("January",result);
+ }
+ @Test
+ public void testFeb_success(){
+ String result = calendar.convertMonth(2);
+ Assertions.assertEquals("February",result);
+ }
+ @Test
+ public void testMar_success(){
+ String result = calendar.convertMonth(3);
+ Assertions.assertEquals("March",result);
+ }
+ @Test
+ public void testApr_success(){
+ String result = calendar.convertMonth(4);
+ Assertions.assertEquals("April",result);
+ }
+ @Test
+ public void testMay_success(){
+ String result = calendar.convertMonth(5);
+ Assertions.assertEquals("May",result);
+ }
+ @Test
+ public void testJun_success(){
+ String result = calendar.convertMonth(6);
+ Assertions.assertEquals("June",result);
+ }
+ @Test
+ public void testJul_success(){
+ String result = calendar.convertMonth(7);
+ Assertions.assertEquals("July",result);
+ }
+ @Test
+ public void testAug_success(){
+ String result = calendar.convertMonth(8);
+ Assertions.assertEquals("August",result);
+ }
+ @Test
+ public void testSep_success(){
+ String result = calendar.convertMonth(9);
+ Assertions.assertEquals("September",result);
+ }
+ @Test
+ public void testOct_success(){
+ String result = calendar.convertMonth(10);
+ Assertions.assertEquals("October",result);
+ }
+ @Test
+ public void testNov_success(){
+ String result = calendar.convertMonth(11);
+ Assertions.assertEquals("November",result);
+ }
+ @Test
+ public void testDec_success(){
+ String result = calendar.convertMonth(12);
+ Assertions.assertEquals("December",result);
+ }
+ @Test
+ public void test_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ String result = calendar.convertMonth(null);
+ Assertions.assertEquals(6,result);
+ });
+ }
+ @Test
+ public void test_fail2(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ String result = calendar.convertMonth(13);
+ Assertions.assertEquals(6,result);
+ });
+ }
+}
\ No newline at end of file
diff --git a/onboarding-java/src/test/java/project/FactorialTest.java b/onboarding-java/src/test/java/project/FactorialTest.java
new file mode 100644
index 0000000..4033ae4
--- /dev/null
+++ b/onboarding-java/src/test/java/project/FactorialTest.java
@@ -0,0 +1,33 @@
+package project;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+
+class FactorialTest {
+
+ public static final Factorial factorial = new Factorial();
+
+ @Test
+ public void test_success(){
+ Integer result = factorial.compute(4);
+ Assertions.assertEquals(24,result);
+ }
+
+ @Test
+ public void test_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ Integer result = factorial.compute(null);
+ Assertions.assertEquals(6,result);
+ });
+ }
+
+ @Test
+ public void test_fail2(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ Integer result = factorial.compute(-2);
+ Assertions.assertEquals(6,result);
+ });
+ }
+
+}
\ No newline at end of file
diff --git a/onboarding-java/src/test/java/project/LetterGradeTest.java b/onboarding-java/src/test/java/project/LetterGradeTest.java
new file mode 100644
index 0000000..a4762e0
--- /dev/null
+++ b/onboarding-java/src/test/java/project/LetterGradeTest.java
@@ -0,0 +1,47 @@
+package project;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+
+class LetterGradeTest {
+ public static final LetterGrade letterGrade = new LetterGrade();
+
+ @Test
+ public void testA_success(){
+ String result = letterGrade.convertGrade(100);
+ Assertions.assertEquals("A",result);
+ }
+
+ @Test
+ public void testAMin_success(){
+ String result = letterGrade.convertGrade(85);
+ Assertions.assertEquals("A-",result);
+ }
+
+ @Test
+ public void testB_success(){
+ String result = letterGrade.convertGrade(70);
+ Assertions.assertEquals("B",result);
+ }
+
+ @Test
+ public void testC_success(){
+ String result = letterGrade.convertGrade(60);
+ Assertions.assertEquals("C",result);
+ }
+
+ @Test
+ public void testD_success(){
+ String result = letterGrade.convertGrade(40);
+ Assertions.assertEquals("D",result);
+ }
+
+ @Test
+ public void test_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ String result = letterGrade.convertGrade(null);
+ Assertions.assertEquals("D",result);
+ });
+ }
+}
\ No newline at end of file
diff --git a/onboarding-java/src/test/java/project/ToDoListTest.java b/onboarding-java/src/test/java/project/ToDoListTest.java
new file mode 100644
index 0000000..2cbd8c6
--- /dev/null
+++ b/onboarding-java/src/test/java/project/ToDoListTest.java
@@ -0,0 +1,57 @@
+package project;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class ToDoListTest {
+
+ @Test
+ public void testAdd_success(){
+ ToDoList toDoList = new ToDoList();
+ toDoList.add("Task1");
+
+ List expected = new ArrayList<>();
+ expected.add("Task1");
+ Assertions.assertEquals(expected, toDoList.getTasks());
+ }
+
+ @Test
+ public void testAdd_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ ToDoList toDoList = new ToDoList();
+ toDoList.add(null);
+
+ List expected = new ArrayList<>();
+ expected.add("Task1");
+ Assertions.assertEquals(expected,toDoList.getTasks());
+ });
+ }
+
+ @Test
+ public void testRemove_success(){
+ ToDoList toDoList = new ToDoList();
+ toDoList.add("Task1");
+ toDoList.remove("Task1");
+
+ List expected = new ArrayList<>();
+ Assertions.assertEquals(expected, toDoList.getTasks());
+ }
+
+ @Test
+ public void testRemove_fail(){
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ ToDoList toDoList = new ToDoList();
+ toDoList.add("Task1");
+ toDoList.remove(null);
+
+ List expected = new ArrayList<>();
+ expected.add("Task1");
+ Assertions.assertEquals(expected,toDoList.getTasks());
+ });
+ }
+}
\ No newline at end of file