Merge pull request #48 from eugenp/master

update
2020-04-26 12:21:53 +02:00
parent 07dd57469b 4a45d8c808
commit 6c0a91ef6e
55 changed files with 1332 additions and 13 deletions
@@ -128,6 +128,21 @@
            <version>${awaitility.version}</version>
            <scope>test</scope>
        </dependency>
+        <dependency>
+            <groupId>org.rosuda.REngine</groupId>
+            <artifactId>Rserve</artifactId>
+            <version>${rserve.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.jbytecode</groupId>
+            <artifactId>RCaller</artifactId>
+            <version>${rcaller.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.renjin</groupId>
+            <artifactId>renjin-script-engine</artifactId>
+            <version>${renjin.version}</version>
+        </dependency>
    </dependencies>

    <repositories>
@@ -137,6 +152,13 @@
            <url>http://repo.numericalmethod.com/maven/</url>
            <layout>default</layout>
        </repository>
+        
+        <!-- Needed for Renjin -->
+        <repository>
+            <id>bedatadriven</id>
+            <name>bedatadriven public repo</name>
+            <url>https://nexus.bedatadriven.com/content/groups/public/</url>
+        </repository>
    </repositories>

    <properties>
@@ -153,6 +175,27 @@
        <assertj.version>3.6.2</assertj.version>
        <slf4j.version>1.7.25</slf4j.version>
        <awaitility.version>3.0.0</awaitility.version>
+        <renjin.version>RELEASE</renjin.version>
+        <rcaller.version>3.0</rcaller.version>
+        <rserve.version>1.8.1</rserve.version>
    </properties>

+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <!-- Excludes FastR classes from compilations since they require GraalVM -->
+                    <excludes>
+                        <exclude>com/baeldung/r/FastRMean.java</exclude>
+                    </excludes>
+                    <testExcludes>
+                        <exclude>com/baeldung/r/FastRMeanUnitTest.java</exclude>						
+                    </testExcludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>
@@ -0,0 +1,33 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+/**
+ * FastR showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class FastRMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     */
+    public double mean(int[] values) {
+        Context polyglot = Context.newBuilder()
+            .allowAllAccess(true)
+            .build();
+        String meanScriptContent = RUtils.getMeanScriptContent();
+        polyglot.eval("R", meanScriptContent);
+        Value rBindings = polyglot.getBindings("R");
+        Value rInput = rBindings.getMember("c")
+            .execute(values);
+        return rBindings.getMember("customMean")
+            .execute(rInput)
+            .asDouble();
+    }
+
+}
@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import com.github.rcaller.rstuff.RCaller;
+import com.github.rcaller.rstuff.RCallerOptions;
+import com.github.rcaller.rstuff.RCode;
+
+/**
+ * RCaller showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RCallerMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     */
+    public double mean(int[] values) throws IOException, URISyntaxException {
+        String fileContent = RUtils.getMeanScriptContent();
+        RCode code = RCode.create();
+        code.addRCode(fileContent);
+        code.addIntArray("input", values);
+        code.addRCode("result <- customMean(input)");
+        RCaller caller = RCaller.create(code, RCallerOptions.create());
+        caller.runAndReturnResult("result");
+        return caller.getParser()
+            .getAsDoubleArray("result")[0];
+    }
+
+}
@@ -0,0 +1,33 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.stream.Collectors;
+
+/**
+ * Utility class for loading the script.R content.
+ * 
+ * @author Donato Rimenti
+ */
+public class RUtils {
+
+    /**
+     * Loads the script.R and returns its content as a string.
+     * 
+     * @return the script.R content as a string
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     */
+    static String getMeanScriptContent() throws IOException, URISyntaxException {
+        URI rScriptUri = RUtils.class.getClassLoader()
+            .getResource("script.R")
+            .toURI();
+        Path inputScript = Paths.get(rScriptUri);
+        return Files.lines(inputScript)
+            .collect(Collectors.joining());
+    }
+}
@@ -0,0 +1,36 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.renjin.script.RenjinScriptEngine;
+import org.renjin.sexp.DoubleArrayVector;
+
+/**
+ * Renjin showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RenjinMean {
+
+    /**
+     * Invokes the customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws IOException        if any error occurs
+     * @throws URISyntaxException if any error occurs
+     * @throws ScriptException    if any error occurs
+     */
+    public double mean(int[] values) throws IOException, URISyntaxException, ScriptException {
+        RenjinScriptEngine engine = new RenjinScriptEngine();
+        String meanScriptContent = RUtils.getMeanScriptContent();
+        engine.put("input", values);
+        engine.eval(meanScriptContent);
+        DoubleArrayVector result = (DoubleArrayVector) engine.eval("customMean(input)");
+        return result.asReal();
+    }
+
+}
@@ -0,0 +1,30 @@
+package com.baeldung.r;
+
+import org.rosuda.REngine.REXPMismatchException;
+import org.rosuda.REngine.REngineException;
+import org.rosuda.REngine.Rserve.RConnection;
+
+/**
+ * Rserve showcase.
+ * 
+ * @author Donato Rimenti
+ */
+public class RserveMean {
+
+    /**
+     * Connects to the Rserve istance listening on 127.0.0.1:6311 and invokes the
+     * customMean R function passing the given values as arguments.
+     * 
+     * @param values the input to the mean script
+     * @return the result of the R script
+     * @throws REngineException      if any error occurs
+     * @throws REXPMismatchException if any error occurs
+     */
+    public double mean(int[] values) throws REngineException, REXPMismatchException {
+        RConnection c = new RConnection();
+        c.assign("input", values);
+        return c.eval("customMean(input)")
+            .asDouble();
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.r;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Test for {@link FastRMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class FastRMeanUnitTest {
+
+    /**
+     * Object to test.
+     */
+    private FastRMean fastrMean = new FastRMean();
+
+    /**
+     * Test for {@link FastRMeanUnitTest#mean(int[])}.
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = fastrMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}
@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Test for {@link RCallerMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class RCallerMeanIntegrationTest {
+
+    /**
+     * Object to test.
+     */
+    private RCallerMean rcallerMean = new RCallerMean();
+
+    /**
+     * Test for {@link RCallerMeanIntegrationTest#mean(int[])}.
+     * 
+     * @throws ScriptException    if an error occurs
+     * @throws URISyntaxException if an error occurs
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws IOException, URISyntaxException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = rcallerMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}
@@ -0,0 +1,37 @@
+package com.baeldung.r;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+
+import javax.script.ScriptException;
+
+import org.junit.Test;
+
+import org.junit.Assert;
+
+/**
+ * Test for {@link RenjinMean}.
+ * 
+ * @author Donato Rimenti
+ */
+public class RenjinMeanUnitTest {
+
+    /**
+     * Object to test.
+     */
+    private RenjinMean renjinMean = new RenjinMean();
+
+    /**
+    * Test for {@link RenjinMeanUnitTest#mean(int[])}.
+    * 
+    * @throws ScriptException    if an error occurs
+    * @throws URISyntaxException if an error occurs
+    * @throws IOException        if an error occurs
+    */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws IOException, URISyntaxException, ScriptException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = renjinMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}
@@ -0,0 +1,34 @@
+package com.baeldung.r;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.rosuda.REngine.REXPMismatchException;
+import org.rosuda.REngine.REngineException;
+
+/**
+ * Test for {@link RserveMean}.
+ * 
+ * @author Donato Rimenti
+ */
+@Ignore
+public class RserveMeanIntegrationTest {
+
+    /**
+     * Object to test.
+     */
+    private RserveMean rserveMean = new RserveMean();
+
+    /**
+     * Test for {@link RserveMeanIntegrationTest#mean(int[])}.
+     * 
+     * @throws REXPMismatchException if an error occurs
+     * @throws REngineException      if an error occurs
+     */
+    @Test
+    public void givenValues_whenMean_thenCorrect() throws REngineException, REXPMismatchException {
+        int[] input = { 1, 2, 3, 4, 5 };
+        double result = rserveMean.mean(input);
+        Assert.assertEquals(3.0, result, 0.000001);
+    }
+}
@@ -0,0 +1,3 @@
+customMean <- function(vector) {
+	mean(vector)
+}
@@ -9,9 +9,9 @@

    <parent>
        <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-1</relativePath>
+        <relativePath>../../parent-boot-2</relativePath>
    </parent>

    <dependencyManagement>
@@ -19,7 +19,7 @@
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-releasetrain</artifactId>
-                <version>Hopper-SR10</version>
+                <version>Lovelace-SR16</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
@@ -174,7 +174,7 @@
        <start-class>com.baeldung.Application</start-class>
        <spring.version>4.3.4.RELEASE</spring.version>
        <httpclient.version>4.5.2</httpclient.version>
-        <spring-data-dynamodb.version>4.4.1</spring-data-dynamodb.version>
+        <spring-data-dynamodb.version>5.1.0</spring-data-dynamodb.version>
        <aws-java-sdk-dynamodb.version>1.11.64</aws-java-sdk-dynamodb.version>
        <bootstrap.version>3.3.7-1</bootstrap.version>
        <sqlite4java.version>1.0.392</sqlite4java.version>
@@ -44,8 +44,8 @@ public class DynamoDBConfig {
        return new BasicAWSCredentials(amazonAWSAccessKey, amazonAWSSecretKey);
    }

-    @Bean(name = "mvcHandlerMappingIntrospector")
-	public HandlerMappingIntrospector mvcHandlerMappingIntrospector() {
+    @Bean(name = "mvcHandlerMappingIntrospectorCustom")
+	public HandlerMappingIntrospector mvcHandlerMappingIntrospectorCustom() {
 		return new HandlerMappingIntrospector(context);
 	}
 }
@@ -1,12 +1,13 @@
 package com.baeldung.spring.data.dynamodb.repositories;

-import com.baeldung.spring.data.dynamodb.model.ProductInfo;
+import java.util.Optional;
+
 import org.socialsignin.spring.data.dynamodb.repository.EnableScan;
 import org.springframework.data.repository.CrudRepository;

-import java.util.List;
+import com.baeldung.spring.data.dynamodb.model.ProductInfo;

@EnableScan
 public interface ProductInfoRepository extends CrudRepository<ProductInfo, String> {
-    List<ProductInfo> findById(String id);
+    Optional<ProductInfo> findById(String id);
 }
@@ -652,6 +652,7 @@
                <module>spring-core</module>
                <module>spring-core-2</module>
                <module>spring-core-3</module>
+                <module>spring-core-4</module>
                <module>spring-cucumber</module>

                <module>spring-data-rest</module>
@@ -1157,6 +1158,7 @@
                <module>spring-core</module>
                <module>spring-core-2</module>
                <module>spring-core-3</module>
+                <module>spring-core-4</module>
                <module>spring-cucumber</module>

                <module>spring-data-rest</module>
@@ -0,0 +1,13 @@
+package com.baeldung.springwithgroovy
+
+import org.springframework.boot.SpringApplication
+import org.springframework.boot.autoconfigure.SpringBootApplication
+
+import com.baeldung.springwithgroovy.SpringBootGroovyApplication
+
+@SpringBootApplication
+class SpringBootGroovyApplication {
+    static void main(String[] args) {
+        SpringApplication.run SpringBootGroovyApplication, args
+    }
+}
@@ -0,0 +1,48 @@
+package com.baeldung.springwithgroovy.controller
+
+import org.springframework.beans.factory.annotation.Autowired
+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.RequestMethod
+import org.springframework.web.bind.annotation.RestController
+
+import com.baeldung.springwithgroovy.entity.Todo
+import com.baeldung.springwithgroovy.service.TodoService
+
+@RestController
+@RequestMapping('todo')
+public class TodoController {
+
+    @Autowired
+    TodoService todoService
+
+    @GetMapping
+    List<Todo> getAllTodoList(){
+        todoService.findAll()
+    }
+
+    @PostMapping
+    Todo saveTodo(@RequestBody Todo todo){
+        todoService.saveTodo todo
+    }
+
+    @PutMapping
+    Todo updateTodo(@RequestBody Todo todo){
+        todoService.updateTodo todo
+    }
+
+    @DeleteMapping('/{todoId}')
+    deleteTodo(@PathVariable Integer todoId){
+        todoService.deleteTodo todoId
+    }
+
+    @GetMapping('/{todoId}')
+    Todo getTodoById(@PathVariable Integer todoId){
+        todoService.findById todoId
+    }
+}
@@ -0,0 +1,23 @@
+package com.baeldung.springwithgroovy.entity
+
+import javax.persistence.Column
+import javax.persistence.Entity
+import javax.persistence.GeneratedValue
+import javax.persistence.GenerationType
+import javax.persistence.Id
+import javax.persistence.Table
+
+@Entity
+@Table(name = 'todo')
+class Todo {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    Integer id
+    
+    @Column
+    String task
+    
+    @Column
+    Boolean isCompleted
+
+}
@@ -0,0 +1,9 @@
+package com.baeldung.springwithgroovy.repository
+
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.stereotype.Repository
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+@Repository
+interface TodoRepository extends JpaRepository<Todo, Integer> {}
@@ -0,0 +1,16 @@
+package com.baeldung.springwithgroovy.service
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+interface TodoService {
+
+    List<Todo> findAll()
+
+    Todo findById(Integer todoId)
+
+    Todo saveTodo(Todo todo)
+
+    Todo updateTodo(Todo todo)
+
+    Todo deleteTodo(Integer todoId)
+}
@@ -0,0 +1,40 @@
+package com.baeldung.springwithgroovy.service.impl
+
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.stereotype.Service
+
+import com.baeldung.springwithgroovy.entity.Todo
+import com.baeldung.springwithgroovy.repository.TodoRepository
+import com.baeldung.springwithgroovy.service.TodoService
+
+@Service
+class TodoServiceImpl implements TodoService {
+
+    @Autowired
+    TodoRepository todoRepository
+
+    @Override
+    List<Todo> findAll() {
+        todoRepository.findAll()
+    }
+
+    @Override
+    Todo findById(Integer todoId) {
+        todoRepository.findById todoId get()
+    }
+
+    @Override
+    Todo saveTodo(Todo todo){
+        todoRepository.save todo
+    }
+
+    @Override
+    Todo updateTodo(Todo todo){
+        todoRepository.save todo
+    }
+
+    @Override
+    Todo deleteTodo(Integer todoId){
+        todoRepository.deleteById todoId
+    }
+}
@@ -0,0 +1,97 @@
+package com.baeldung.springwithgroovy
+
+import static org.junit.jupiter.api.Assertions.assertEquals
+import static org.junit.jupiter.api.Assertions.assertTrue
+
+import org.junit.BeforeClass
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.http.HttpStatus
+import org.springframework.http.MediaType
+import org.springframework.test.context.event.annotation.BeforeTestClass
+import org.springframework.test.context.junit4.SpringRunner
+
+import com.baeldung.springwithgroovy.entity.Todo
+
+import io.restassured.RestAssured
+import io.restassured.response.Response
+
+class TodoAppUnitTest {
+    static API_ROOT = 'http://localhost:8081/todo'
+    static readingTodoId
+    static writingTodoId
+
+    @BeforeClass
+    static void populateDummyData() {
+        Todo readingTodo = new Todo(task: 'Reading', isCompleted: false)
+        Todo writingTodo = new Todo(task: 'Writing', isCompleted: false)
+
+        final Response readingResponse = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(readingTodo).post(API_ROOT)
+              
+        Todo cookingTodoResponse = readingResponse.as Todo.class
+        readingTodoId = cookingTodoResponse.getId()
+
+        final Response writingResponse = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(writingTodo).post(API_ROOT)
+              
+        Todo writingTodoResponse = writingResponse.as Todo.class
+        writingTodoId = writingTodoResponse.getId()
+    }
+
+    @Test
+    void whenGetAllTodoList_thenOk(){
+        final Response response = RestAssured.get(API_ROOT)
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        assertTrue response.as(List.class).size() > 0
+    }
+
+    @Test
+    void whenGetTodoById_thenOk(){
+        final Response response = 
+          RestAssured.get("$API_ROOT/$readingTodoId")
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        Todo todoResponse = response.as Todo.class
+        assertEquals readingTodoId,todoResponse.getId()
+    }
+
+    @Test
+    void whenUpdateTodoById_thenOk(){
+        Todo todo = new Todo(id:readingTodoId, isCompleted: true)
+        final Response response = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(todo).put(API_ROOT)
+              
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+        Todo todoResponse = response.as Todo.class
+        assertTrue todoResponse.getIsCompleted()
+    }
+
+    @Test
+    void whenDeleteTodoById_thenOk(){
+        final Response response = 
+          RestAssured.given()
+            .delete("$API_ROOT/$writingTodoId")
+        
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+    }
+
+    @Test
+    void whenSaveTodo_thenOk(){
+        Todo todo = new Todo(task: 'Blogging', isCompleted: false)
+        final Response response = 
+          RestAssured.given()
+            .contentType(MediaType.APPLICATION_JSON_VALUE)
+              .body(todo).post(API_ROOT)
+              
+        assertEquals HttpStatus.OK.value(),response.getStatusCode()
+    }
+}
@@ -8,9 +8,9 @@

    <parent>
        <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../../parent-boot-1</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
    </parent>
 	
    <dependencies>
@@ -8,9 +8,9 @@
 	
    <parent>
        <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-1</artifactId>
+        <artifactId>parent-boot-2</artifactId>
        <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../../parent-boot-1</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
    </parent>
    
 </project>
@@ -0,0 +1,7 @@
+## Spring Core
+
+This module contains articles about core Spring functionality
+
+## Relevant Articles:
+
+- More articles: [[<-- prev]](/spring-core-3)
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-core-4</artifactId>
+    <name>spring-core-4</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-spring-5</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../parent-spring-5</relativePath>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-core</artifactId>
+            <version>${spring.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <version>${spring.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit-jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit-jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>${maven.surefire.version}</version>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <maven.surefire.version>2.22.1</maven.surefire.version>
+        <annotation-api.version>1.3.2</annotation-api.version>
+        <spring.boot.version>2.2.2.RELEASE</spring.boot.version>
+    </properties>
+
+</project>
@@ -0,0 +1,18 @@
+package com.baeldung.factorymethod;
+
+public class Bar {
+
+    private String name;
+
+    public Bar(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
@@ -0,0 +1,5 @@
+package com.baeldung.factorymethod;
+
+public class Foo {
+
+}
--- a/Show More
+++ b/Show More