diff --git a/Backend/Lab2_1/demo/.gitignore b/Backend/Lab2_1/demo/.gitignore
new file mode 100644
index 0000000..c2065bc
--- /dev/null
+++ b/Backend/Lab2_1/demo/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/Backend/Lab2_1/demo/build.gradle b/Backend/Lab2_1/demo/build.gradle
new file mode 100644
index 0000000..2263922
--- /dev/null
+++ b/Backend/Lab2_1/demo/build.gradle
@@ -0,0 +1,27 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.2.2'
+	id 'io.spring.dependency-management' version '1.1.4'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	sourceCompatibility = '17'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.3.0'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}
diff --git a/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.jar b/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..d64cd49
Binary files /dev/null and b/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.properties b/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..1af9e09
--- /dev/null
+++ b/Backend/Lab2_1/demo/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/Backend/Lab2_1/demo/gradlew b/Backend/Lab2_1/demo/gradlew
new file mode 100644
index 0000000..1aa94a4
--- /dev/null
+++ b/Backend/Lab2_1/demo/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed 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.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | 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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/Backend/Lab2_1/demo/gradlew.bat b/Backend/Lab2_1/demo/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/Backend/Lab2_1/demo/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem 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, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@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=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@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="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+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 execute
+
+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
+
+: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 %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 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!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/Backend/Lab2_1/demo/settings.gradle b/Backend/Lab2_1/demo/settings.gradle
new file mode 100644
index 0000000..0a383dd
--- /dev/null
+++ b/Backend/Lab2_1/demo/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'demo'
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/ApiController.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/ApiController.java
new file mode 100644
index 0000000..502546d
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/ApiController.java
@@ -0,0 +1,90 @@
+package com.example.demo;
+
+// import java.util.Date;
+import java.util.HashMap;
+// import java.util.List;
+import java.util.Map;
+
+// import org.slf4j.Logger;
+// import org.slf4j.LoggerFactory;
+// import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+// import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/user")
+public class ApiController {
+    // private final Logger log = LoggerFactory.getLogger(ApiController.class);
+
+    // @GetMapping
+    // public String get(@RequestParam(name = "name", defaultValue = "World") String name) {
+    //     return String.format("Hello, %s!", name);
+    // }
+
+    // @GetMapping("/test")
+    // public String getTest() {
+    //     return new Date().toString();
+    // }
+
+    // @GetMapping("/num")
+    // public Integer getNum() {
+    //     return 10;
+    // }
+
+    // @GetMapping("/list")
+    // public List<Integer> getList() {
+    //     return List.of(10, 20, 30, 40, 50);
+    // }
+
+    // @PutMapping("/{name}")
+    // public String putMethodName(@PathVariable(name = "name") String name, @RequestBody String entity) {
+    //     log.info("The body value is {}", entity);
+    //     return get(name);
+    // }
+
+    // @PutMapping("user/{idUser}")
+    // public UserDto postUser(@PathVariable(name = "idUser") String idUser) {
+    //     // Играем с айдишниками
+    //     return new UserDto();
+    // }
+
+
+    Map<Integer, UserDto> users = new HashMap<>();
+
+    @GetMapping
+    public Map<Integer, UserDto> getUsers() {
+        return users;
+    }
+
+    @GetMapping("/{id}")
+    public UserDto getUser(@PathVariable(name = "id") int id) {
+        return users.get(id);
+    }
+    
+    @DeleteMapping("/{id}")
+    public UserDto delete(@PathVariable(name = "id") int id) {
+        UserDto usr = users.get(id);
+        users.remove(id);
+        return usr;
+    }
+
+    @PostMapping
+    public UserDto postMap(@RequestBody UserDto userDto) {
+        users.put(users.size(), userDto);
+        return userDto;
+    }
+
+    @PutMapping("/{id}")
+    public UserDto putMap(@RequestBody UserDto UserDto, @PathVariable(name = "id") int id) {
+        // users.put(id, UserDto);
+        users.replace(id, UserDto);
+        return UserDto;
+    }
+}
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/DemoApplication.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/DemoApplication.java
new file mode 100644
index 0000000..ac442ae
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/DemoApplication.java
@@ -0,0 +1,18 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@SpringBootApplication
+@RestController
+@RequestMapping("/api")
+public class DemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(DemoApplication.class, args);
+	}
+
+}
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesController.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesController.java
new file mode 100644
index 0000000..d34097f
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesController.java
@@ -0,0 +1,52 @@
+package com.example.demo;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+
+@RestController
+@RequestMapping("/line")
+public class LinesController {
+    List<LinesDTO> lines = new ArrayList<>();
+
+    @GetMapping
+    public List<LinesDTO> getLines() {
+        return lines.stream().toList();
+    }
+
+    @GetMapping("/{id}")
+    public LinesDTO getLine(@PathVariable(name = "id") int id) {
+        return lines.get(id);
+    }
+    
+    @DeleteMapping("/{id}")
+    public LinesDTO deleteLine(@PathVariable(name = "id") int id) {
+        LinesDTO lin = lines.get(id);
+        lines.remove(id);
+        return lin;
+    }
+
+    @PostMapping
+    public LinesDTO postMap(@RequestBody LinesDTO linesDto) {
+        lines.add(lines.size(), linesDto);
+        return linesDto;
+    }
+
+    @PutMapping("/{id}")
+    public LinesDTO putMap(@RequestBody LinesDTO LinesDto, @PathVariable(name = "id") int id) {
+        // lines.put(id, LinesDto);
+        lines.add(id, LinesDto);
+        return LinesDto;
+    }
+}
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesDTO.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesDTO.java
new file mode 100644
index 0000000..ad21064
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/LinesDTO.java
@@ -0,0 +1,50 @@
+package com.example.demo;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class LinesDTO {
+    private String id;
+    private String title;
+    private String description;
+    private String count;
+    private String price;
+
+    public LinesDTO() {
+    }
+
+    @JsonCreator
+    public LinesDTO (
+        @JsonProperty(value = "id") String id,
+        @JsonProperty(value = "title") String title,
+        @JsonProperty(value = "description") String description,
+        @JsonProperty(value = "count") String count,
+        @JsonProperty(value = "price") String price) {
+        this.id = id;
+        this.title = title; 
+        this.description = description;
+        this.count = count;
+        this.price = price;
+    }
+    
+    public String getId() {
+        return id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public String getCount() {
+        return count;
+    }
+    
+    public String getPrice() {
+        return price;
+    }
+
+}
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/UserDto.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/UserDto.java
new file mode 100644
index 0000000..c64fcc3
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/UserDto.java
@@ -0,0 +1,43 @@
+package com.example.demo;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class UserDto {
+    private String email;
+    private String name;
+    private String age;
+    private String password;
+
+    public UserDto() {
+    }
+
+    @JsonCreator
+    public UserDto (
+        @JsonProperty(value = "email") String email,
+        @JsonProperty(value = "name") String name,
+        @JsonProperty(value = "age") String age,
+        @JsonProperty(value = "password") String password) { 
+        this.email = email; 
+        this.name = name;
+        this.age = age;
+        this.password = password;
+    }
+    
+
+    public String getEmail() {
+        return email;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAge() {
+        return age;
+    }
+    
+    public String getPassword() {
+        return password;
+    }
+}
diff --git a/Backend/Lab2_1/demo/src/main/java/com/example/demo/WebConfig.java b/Backend/Lab2_1/demo/src/main/java/com/example/demo/WebConfig.java
new file mode 100644
index 0000000..d5585a1
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/java/com/example/demo/WebConfig.java
@@ -0,0 +1,15 @@
+package com.example.demo;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.lang.NonNull;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+    @Override
+    public void addCorsMappings(@NonNull CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedMethods("GET", "POST", "PUT", "DELETE");
+    }
+}
diff --git a/Backend/Lab2_1/demo/src/main/resources/application.properties b/Backend/Lab2_1/demo/src/main/resources/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/Backend/Lab2_1/demo/src/main/resources/application.properties
@@ -0,0 +1 @@
+
diff --git a/Backend/Lab2_1/demo/src/test/java/com/example/demo/DemoApplicationTests.java b/Backend/Lab2_1/demo/src/test/java/com/example/demo/DemoApplicationTests.java
new file mode 100644
index 0000000..2778a6a
--- /dev/null
+++ b/Backend/Lab2_1/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() {
+	}
+
+}