diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..b58b603
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..07e72e7
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,18 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..6c094e1
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..712ab9d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/lab-java-springboot-rest-api.iml b/.idea/lab-java-springboot-rest-api.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/lab-java-springboot-rest-api.iml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..473ee8e
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,14 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..43ec782
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..8306744
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/demo/.gitattributes b/demo/.gitattributes
new file mode 100644
index 0000000..3b41682
--- /dev/null
+++ b/demo/.gitattributes
@@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
diff --git a/demo/.gitignore b/demo/.gitignore
new file mode 100644
index 0000000..667aaef
--- /dev/null
+++ b/demo/.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/demo/.mvn/wrapper/maven-wrapper.properties b/demo/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..8dea6c2
--- /dev/null
+++ b/demo/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.12/apache-maven-3.9.12-bin.zip
diff --git a/demo/mvnw b/demo/mvnw
new file mode 100644
index 0000000..bd8896b
--- /dev/null
+++ b/demo/mvnw
@@ -0,0 +1,295 @@
+#!/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
+#
+# 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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+# JAVA_HOME - location of a JDK home dir, required when download maven via java source
+# MVNW_REPOURL - repo url base for downloading maven distribution
+# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+ [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+ native_path() { cygpath --path --windows "$1"; }
+ ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+ # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+ if [ -n "${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"
+ JAVACCMD="$JAVA_HOME/jre/sh/javac"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ JAVACCMD="$JAVA_HOME/bin/javac"
+
+ if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+ echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+ echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+ return 1
+ fi
+ fi
+ else
+ JAVACMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v java
+ )" || :
+ JAVACCMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v javac
+ )" || :
+
+ if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+ echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+ return 1
+ fi
+ fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+ str="${1:-}" h=0
+ while [ -n "$str" ]; do
+ char="${str%"${str#?}"}"
+ h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+ str="${str#?}"
+ done
+ printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+ printf %s\\n "$1" >&2
+ exit 1
+}
+
+trim() {
+ # MWRAPPER-139:
+ # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+ # Needed for removing poorly interpreted newline sequences when running in more
+ # exotic environments such as mingw bash on Windows.
+ printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+ case "${key-}" in
+ distributionUrl) distributionUrl=$(trim "${value-}") ;;
+ distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+ esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+ MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+ case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+ *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+ :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+ :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+ :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+ *)
+ echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+ distributionPlatform=linux-amd64
+ ;;
+ esac
+ distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+ ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+ unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+ exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+ verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+ clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+ trap clean HUP INT TERM EXIT
+else
+ die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+ distributionUrl="${distributionUrl%.zip}.tar.gz"
+ distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+ verbose "Found wget ... using wget"
+ wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+ verbose "Found curl ... using curl"
+ curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+ verbose "Falling back to use Java to download"
+ javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+ targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+ cat >"$javaSource" <<-END
+ public class Downloader extends java.net.Authenticator
+ {
+ protected java.net.PasswordAuthentication getPasswordAuthentication()
+ {
+ return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+ }
+ public static void main( String[] args ) throws Exception
+ {
+ setDefault( new Downloader() );
+ java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+ }
+ }
+ END
+ # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+ verbose " - Compiling Downloader.java ..."
+ "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+ verbose " - Running Downloader.java ..."
+ "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+ distributionSha256Result=false
+ if [ "$MVN_CMD" = mvnd.sh ]; then
+ echo "Checksum validation is not supported for maven-mvnd." >&2
+ echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ elif command -v sha256sum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ elif command -v shasum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ else
+ echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+ echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ fi
+ if [ $distributionSha256Result = false ]; then
+ echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+ echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+ exit 1
+ fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+ unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+ tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+ if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+ actualDistributionDir="$distributionUrlNameMain"
+ fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+ # enable globbing to iterate over items
+ set +f
+ for dir in "$TMP_DOWNLOAD_DIR"/*; do
+ if [ -d "$dir" ]; then
+ if [ -f "$dir/bin/$MVN_CMD" ]; then
+ actualDistributionDir="$(basename "$dir")"
+ break
+ fi
+ fi
+ done
+ set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+ verbose "Contents of $TMP_DOWNLOAD_DIR:"
+ verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+ die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/demo/mvnw.cmd b/demo/mvnw.cmd
new file mode 100644
index 0000000..92450f9
--- /dev/null
+++ b/demo/mvnw.cmd
@@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM MVNW_REPOURL - repo url base for downloading maven distribution
+@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+ IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+ $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+ Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+ "maven-mvnd-*" {
+ $USE_MVND = $true
+ $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+ $MVN_CMD = "mvnd.cmd"
+ break
+ }
+ default {
+ $USE_MVND = $false
+ $MVN_CMD = $script -replace '^mvnw','mvn'
+ break
+ }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+if ($env:MVNW_REPOURL) {
+ $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+ $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+ $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+ New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+ $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+ $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+ Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+ exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+ Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+ if ($TMP_DOWNLOAD_DIR.Exists) {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+ }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+ $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+ if ($USE_MVND) {
+ Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+ }
+ Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+ if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+ Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+ }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+ $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+ Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+ $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+ if (Test-Path -Path $testPath -PathType Leaf) {
+ $actualDistributionDir = $_.Name
+ }
+ }
+}
+
+if (!$actualDistributionDir) {
+ Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+ Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+ if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+ Write-Error "fail to move MAVEN_HOME"
+ }
+} finally {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/demo/pom.xml b/demo/pom.xml
new file mode 100644
index 0000000..6730f98
--- /dev/null
+++ b/demo/pom.xml
@@ -0,0 +1,76 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 4.0.3
+
+
+ com.example
+ demo
+ 0.0.1-SNAPSHOT
+ demo
+ Demo project for Spring Boot
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 17
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+
+ org.springframework
+ spring-web
+
+
+
+
+ org.springframework.boot
+ spring-boot-devtools
+
+
+
+
+ org.springframework.boot
+ spring-boot-starter-validation
+
+
+
+ org.springframework.boot
+ spring-boot-starter-web
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+
+
diff --git a/demo/src/main/java/com/example/demo/DemoApplication.java b/demo/src/main/java/com/example/demo/DemoApplication.java
new file mode 100644
index 0000000..64b538a
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/DemoApplication.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class DemoApplication {
+
+ public static void main(String[] args) {
+ SpringApplication.run(DemoApplication.class, args);
+ }
+
+}
diff --git a/demo/src/main/java/com/example/demo/controller/CustomerController.java b/demo/src/main/java/com/example/demo/controller/CustomerController.java
new file mode 100644
index 0000000..26fbf10
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/controller/CustomerController.java
@@ -0,0 +1,54 @@
+package com.example.demo.controller;
+
+import com.example.demo.model.Customer;
+import com.example.demo.service.CustomerService;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/customers")
+public class CustomerController {
+ private CustomerService customerService;
+
+ public CustomerController(CustomerService customerService) {
+ this.customerService = customerService;
+ }
+
+ @GetMapping
+ public List getAllCustomers(@RequestHeader(value="API-Key" )String apiKey){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ return customerService.getAllCustomers();
+ }
+ @GetMapping("/{id}")
+ public Customer getCustomerById(@RequestHeader(value="API-Key" )String apiKey,@PathVariable Long id){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ return customerService.getCustomerById(id);
+ }
+
+ @PostMapping
+ public ResponseEntity createCustomer(@RequestHeader(value="API-Key" )String apiKey, @Valid @RequestBody Customer customer){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ Customer newCustomer=customerService.createCustomer(customer);
+ return ResponseEntity.status(HttpStatus.CREATED).body(newCustomer);
+ }
+ @GetMapping("/email")
+ public Customer getCustomerByEmail(@RequestHeader(value="API-Key" )String apiKey,@RequestParam String email){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ return customerService.getCustomerByEmail(email);
+ }
+ @PatchMapping("/{id}")
+ public Customer updateCustomer(@RequestHeader(value="API-Key" )String apiKey,@PathVariable Long id,@Valid @RequestBody Customer customer ){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ return customerService.updateCustomer(id,customer);
+ }
+ @DeleteMapping("/{id}")
+ public ResponseEntity deleteCustomer(@RequestHeader(value="API-Key" )String apiKey,@PathVariable Long id){
+ if(!"123456".equals(apiKey)) throw new IllegalArgumentException("Invalid API Key");
+ customerService.deleteCustomer(id);
+ return ResponseEntity.noContent().build();
+ }
+}
diff --git a/demo/src/main/java/com/example/demo/controller/ProductController.java b/demo/src/main/java/com/example/demo/controller/ProductController.java
new file mode 100644
index 0000000..f2dc8bf
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/controller/ProductController.java
@@ -0,0 +1,71 @@
+package com.example.demo.controller;
+
+import com.example.demo.model.Product;
+import com.example.demo.service.ProductService;
+import jakarta.validation.Valid;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+@RequestMapping("/products")
+@RestController
+public class ProductController {
+ private ProductService productService;
+
+ public ProductController(ProductService productService) {
+ this.productService = productService;
+ }
+
+ @PostMapping
+ public ResponseEntity createNewProduct(@RequestHeader(value="API-Key",required = true) String apiKey, @Valid @RequestBody Product product) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ Product created= productService.addProduct(product);
+ return ResponseEntity.status(HttpStatus.CREATED).body(created);
+ }
+ @GetMapping("/{id}")
+ public ResponseEntity getProductById(@RequestHeader(value="API-Key") String apiKey,@PathVariable Long id){
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ Product product=productService.getProductById(id);
+ return ResponseEntity.status(HttpStatus.OK).body(product);
+ }
+ @GetMapping
+ public ResponseEntity> getAllProducts(@RequestHeader(value="API-Key") String apiKey) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ List products=productService.getAllProducts();
+ return ResponseEntity.status(HttpStatus.OK).body(products);
+ }
+
+ @PatchMapping("/{name}")
+ public Product updateProduct(@RequestHeader(value="API-Key") String apiKey,@PathVariable String name,@Valid @RequestBody Product product){
+ return productService.updateProduct(name,product);
+ }
+
+
+ @GetMapping("/name/{name}")
+ public ResponseEntity getProductByName(@RequestHeader(value="API-Key") String apiKey,@PathVariable String name) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ Product product=productService.getProductByName(name);
+ return ResponseEntity.status(HttpStatus.OK).body(product);
+ }
+
+ @GetMapping("/category/{category}")
+ public ResponseEntity> getProductsByCategory(@RequestHeader(value="API-Key") String apiKey,@PathVariable String category) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ List product=productService.getAllProductsByCategory(category);
+ return ResponseEntity.status(HttpStatus.OK).body(product);
+ }
+
+ @GetMapping("/price")
+ public ResponseEntity> getProductsByPriceRange(@RequestHeader(value="API-Key") String apiKey,@RequestParam Double min, @RequestParam Double max) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ return ResponseEntity.status(HttpStatus.OK).body(productService.getProductsByPriceRange(min, max)) ;
+ }
+ @DeleteMapping("/{name}")
+ public ResponseEntity deleteProduct(@RequestHeader(value="API-Key") String apiKey,@PathVariable String name) {
+ if(!"123456".equals(apiKey)) return ResponseEntity.status(HttpStatus.UNAUTHORIZED).build();
+ productService.deleteProduct(name);
+ return ResponseEntity.noContent().build();
+ }
+
+}
diff --git a/demo/src/main/java/com/example/demo/exception/GlobalExceptionHandler.java b/demo/src/main/java/com/example/demo/exception/GlobalExceptionHandler.java
new file mode 100644
index 0000000..23c6ba8
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/exception/GlobalExceptionHandler.java
@@ -0,0 +1,47 @@
+package com.example.demo.exception;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.MissingRequestHeaderException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+ @ExceptionHandler(MethodArgumentNotValidException.class)
+ public ResponseEntity> handleValidationException(MethodArgumentNotValidException ex){
+
+ Map errors = new HashMap<>();
+
+ ex.getBindingResult().getFieldErrors()
+ .forEach(error ->
+ errors.put(error.getField(), error.getDefaultMessage())
+ );
+
+ return new ResponseEntity<>(errors, HttpStatus.BAD_REQUEST);
+ }
+ // Missing API-Key header
+ @ExceptionHandler(MissingRequestHeaderException.class)
+ public ResponseEntity handleMissingHeader(MissingRequestHeaderException ex){
+
+ return new ResponseEntity<>("API-Key header is missing", HttpStatus.BAD_REQUEST);
+ }
+
+
+ @ExceptionHandler(RuntimeException.class)
+ public ResponseEntity handleProductNotFound(RuntimeException ex){
+
+ return new ResponseEntity<>(ex.getMessage(), HttpStatus.NOT_FOUND);
+ }
+
+
+
+ @ExceptionHandler(IllegalArgumentException.class)
+ public ResponseEntity handleInvalidPrice(IllegalArgumentException ex){
+
+ return new ResponseEntity<>(ex.getMessage(), HttpStatus.BAD_REQUEST);
+ }
+}
diff --git a/demo/src/main/java/com/example/demo/model/Customer.java b/demo/src/main/java/com/example/demo/model/Customer.java
new file mode 100644
index 0000000..6ea9038
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/model/Customer.java
@@ -0,0 +1,74 @@
+package com.example.demo.model;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+import java.util.Random;
+import java.util.UUID;
+
+public class Customer {
+ private Long id;
+ @NotBlank
+ private String name;
+ @Email
+ private String email;
+ @Min(value = 18,message = "age must be greater than 18")
+ private int age;
+ @NotBlank
+ private String address;
+
+ Random random = new Random();
+
+ public Customer(String address, int age, String email, String name) {
+ this.id= random.nextLong();
+ this.address = address;
+ this.age = age;
+ this.email = email;
+ this.name = name;
+ }
+ public Customer() {
+ this.id= random.nextLong();
+ }
+
+ public Long getId() {
+ return id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public String getEmail() {
+ return email;
+ }
+
+ public int getAge() {
+ return age;
+ }
+
+ public String getAddress() {
+ return address;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public void setEmail(String email) {
+ this.email = email;
+ }
+
+ public void setAge(int age) {
+ this.age = age;
+ }
+
+ public void setAddress(String address) {
+ this.address = address;
+ }
+}
diff --git a/demo/src/main/java/com/example/demo/model/Product.java b/demo/src/main/java/com/example/demo/model/Product.java
new file mode 100644
index 0000000..7c2b3f7
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/model/Product.java
@@ -0,0 +1,70 @@
+package com.example.demo.model;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Positive;
+import jakarta.validation.constraints.Size;
+
+import java.util.Random;
+
+public class Product {
+ private Long id;
+ @NotBlank
+ @Size(min=3, message="Name should be greater than 3 letters ")
+ private String name;
+ @Positive
+ private Double price;
+ @NotBlank
+ private String category;
+ @Positive
+ private int quantity;
+
+ public Product(String name, double price, String category, int quantity) {
+ Random random=new Random();
+ this.id=random.nextLong();
+ this.name = name;
+ this.price = price;
+ this.category = category;
+ this.quantity = quantity;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public double getPrice() {
+ return price;
+ }
+
+ public String getCategory() {
+ return category;
+ }
+
+ public Long getId() {
+ return id;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public int getQuantity() {
+ return quantity;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public void setPrice(double price) {
+ this.price = price;
+ }
+
+ public void setCategory(String category) {
+ this.category = category;
+ }
+
+ public void setQuantity(int quantity) {
+ this.quantity = quantity;
+ }
+}
diff --git a/demo/src/main/java/com/example/demo/service/CustomerService.java b/demo/src/main/java/com/example/demo/service/CustomerService.java
new file mode 100644
index 0000000..e08f770
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/service/CustomerService.java
@@ -0,0 +1,56 @@
+package com.example.demo.service;
+
+import com.example.demo.model.Customer;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+@Service
+public class CustomerService {
+ HashMap customers = new HashMap<>();
+
+ public Customer createCustomer(Customer customer){
+ if(customer == null) throw new IllegalArgumentException("Customer is null");
+ Customer newCustomer=new Customer();
+ newCustomer.setAge(customer.getAge());
+ newCustomer.setAddress(customer.getAddress());
+ newCustomer.setEmail(customer.getEmail());
+ newCustomer.setName(customer.getName());
+ customers.put(newCustomer.getId(), newCustomer);
+
+ return newCustomer;
+ }
+
+ public List getAllCustomers(){
+ return new ArrayList<>(customers.values());
+ }
+ public Customer getCustomerById(Long id){
+ return customers.get(id);
+ }
+
+ public Customer getCustomerByEmail(String email){
+ if(email == null) throw new IllegalArgumentException("Email is null");
+ for(Customer customer:customers.values()){
+ if(customer.getEmail().equals(email)) return customer;
+ }
+ throw new IllegalArgumentException("Customer with email "+email+" not found");
+ }
+
+ public Customer updateCustomer(Long id,Customer customer){
+ Customer updatedCustomer=customers.get(id);
+ if(customer == null && updatedCustomer == null) throw new IllegalArgumentException("Customer is null");
+
+ if(customer.getName() != null) updatedCustomer.setName(customer.getName());
+ if(customer.getAge() != 0) updatedCustomer.setAge(customer.getAge());
+ if(customer.getAddress() != null) updatedCustomer.setAddress(customer.getAddress());
+ if(customer.getEmail() != null) updatedCustomer.setEmail(customer.getEmail());
+ return updatedCustomer;
+ }
+ public void deleteCustomer(Long id){
+ Customer customer=customers.get(id);
+ if(customer == null) throw new IllegalArgumentException("Customer with id "+id+" not found");
+ customers.remove(id);
+ }
+}
diff --git a/demo/src/main/java/com/example/demo/service/ProductService.java b/demo/src/main/java/com/example/demo/service/ProductService.java
new file mode 100644
index 0000000..0f39b4e
--- /dev/null
+++ b/demo/src/main/java/com/example/demo/service/ProductService.java
@@ -0,0 +1,74 @@
+package com.example.demo.service;
+
+import com.example.demo.model.Product;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+@Service
+public class ProductService{
+ HashMap products=new HashMap<>();
+
+
+ public Product addProduct(Product product){
+ products.put(product.getId(),product);
+ return product;
+ }
+ public List getAllProducts(){
+ return new ArrayList<>(products.values());
+ }
+
+ public Product getProductByName(String name){
+ for(Product p:products.values()){
+ if(p.getName().equalsIgnoreCase(name)){
+ return p;
+ }
+ }
+ throw new RuntimeException("Product not found");
+ }
+ public Product getProductById(Long id){
+ Product p=products.get(id);
+ if ( p == null ){
+ throw new RuntimeException("Product not found");
+ }
+ return p;
+ }
+
+ public Product updateProduct(String name,Product product){
+ Product p=getProductByName(name);
+ if(product.getName()== null) throw new RuntimeException("Name not found");
+ if(product.getPrice()==0) throw new RuntimeException("Price not found");
+
+ p.setName(product.getName());
+ return p;
+
+ }
+ public void deleteProduct(String name){
+ Product product=getProductByName(name);
+ products.remove(product.getId());
+ }
+
+ public List getAllProductsByCategory(String category){
+ ArrayList productsList=new ArrayList<>();
+ for(Product p:products.values()){
+ if(p.getCategory().equals(category)){
+ productsList.add(p);
+ }
+ }
+ return productsList;
+ }
+ public List getProductsByPriceRange(double min,double max){
+ if(min>max) throw new RuntimeException("min must be greater than max");
+
+ ArrayList productsList=new ArrayList<>();
+ for(Product p:products.values()){
+ if(p.getPrice()>=min && p.getPrice()<=max){
+ productsList.add(p);
+ }
+ }
+ return productsList;
+ }
+
+}
diff --git a/demo/src/main/resources/application.properties b/demo/src/main/resources/application.properties
new file mode 100644
index 0000000..2109a44
--- /dev/null
+++ b/demo/src/main/resources/application.properties
@@ -0,0 +1 @@
+spring.application.name=demo
diff --git a/demo/src/test/java/com/example/demo/DemoApplicationTests.java b/demo/src/test/java/com/example/demo/DemoApplicationTests.java
new file mode 100644
index 0000000..2778a6a
--- /dev/null
+++ b/demo/src/test/java/com/example/demo/DemoApplicationTests.java
@@ -0,0 +1,13 @@
+package com.example.demo;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class DemoApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}