Merge remote-tracking branch 'baeldung/master' into BAEL-4288#flyway-repair

core-java-modules/core-java-io-2/README.md

@@ -13,4 +13,4 @@ This module contains articles about core Java input and output (IO)
 - [How to Copy a File with Java](https://www.baeldung.com/java-copy-file)
 - [Create a Directory in Java](https://www.baeldung.com/java-create-directory) 
 - [Java IO vs NIO](https://www.baeldung.com/java-io-vs-nio)
-- [[<-- Prev]](/core-java-modules/core-java-io)
+- [[<-- Prev]](/core-java-modules/core-java-io)[[More -->]](/core-java-modules/core-java-io-3)

core-java-modules/core-java-io-3/README.md

@@ -0,0 +1,7 @@
+## Core Java IO
+
+This module contains articles about core Java input and output (IO)
+
+### Relevant Articles: 
+- [Java – Create a File](https://www.baeldung.com/java-how-to-create-a-file)
+- [[<-- Prev]](/core-java-modules/core-java-io-2)

core-java-modules/core-java-io-3/pom.xml

@@ -0,0 +1,86 @@
+<?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>core-java-io-3</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>core-java-io-3</name>
+    <packaging>jar</packaging>
+    <parent>
+        <groupId>com.baeldung.core-java-modules</groupId>
+        <artifactId>core-java-modules</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../</relativePath>
+    </parent>
+
+    <dependencies>
+        <!-- utils -->
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <!-- utils -->
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+        <!-- logging -->
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency> <!-- needed to bridge to slf4j for projects that use the log4j APIs directly -->
+            <groupId>org.slf4j</groupId>
+            <artifactId>log4j-over-slf4j</artifactId>
+            <version>${org.slf4j.version}</version>
+        </dependency>
+        <!-- test scoped -->
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <!-- https://mvnrepository.com/artifact/com.github.tomakehurst/wiremock -->
+        <dependency>
+            <groupId>com.github.tomakehurst</groupId>
+            <artifactId>wiremock</artifactId>
+            <version>${wiremock.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+    <build>
+        <finalName>core-java-io-3</finalName>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>${maven-javadoc-plugin.version}</version>
+                <configuration>
+                    <source>${maven.compiler.source}</source>
+                    <target>${maven.compiler.target}</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <properties>
+        <assertj.version>3.6.1</assertj.version>
+        <maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+        <wiremock.version>2.26.3</wiremock.version>
+    </properties>
+
+</project>

core-java-modules/core-java-io-3/src/test/java/com/baeldung/createfile/CreateFileUnitTest.java

@@ -0,0 +1,50 @@
+package com.baeldung.createfile;
+
+import org.apache.commons.io.FileUtils;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class CreateFileUnitTest {
+
+    private final String FILE_NAME = "src/test/resources/fileToCreate.txt";
+
+    @AfterEach
+    @BeforeEach
+    public void cleanUpFiles() {
+        File targetFile = new File(FILE_NAME);
+        targetFile.delete();
+    }
+
+    @Test
+    public void givenUsingNio_whenCreatingFile_thenCorrect() throws IOException {
+        Path newFilePath = Paths.get(FILE_NAME);
+        Files.createFile(newFilePath);
+    }
+
+    @Test
+    public void givenUsingFile_whenCreatingFile_thenCorrect() throws IOException {
+        File newFile = new File(FILE_NAME);
+        boolean success = newFile.createNewFile();
+        assertTrue(success);
+    }
+
+    @Test
+    public void givenUsingGuava_whenCreatingFile_thenCorrect() throws IOException {
+        com.google.common.io.Files.touch(new File(FILE_NAME));
+    }
+
+    @Test
+    public void givenUsingCommonsIo_whenCreatingFile_thenCorrect() throws IOException {
+        FileUtils.touch(new File(FILE_NAME));
+    }
+
+}

core-java-modules/core-java-lang-3/pom.xml

@@ -39,4 +39,4 @@
         <assertj.version>3.12.2</assertj.version>
     </properties>
       
-</project>
+</project>

core-java-modules/core-java-lang-3/src/main/java/com/baeldung/staticvariables/StaticVariableDemo.java

@@ -0,0 +1,23 @@
+package com.baeldung.staticvariables;
+
+public class StaticVariableDemo {
+    public static int i;
+    public static int j = 20;
+    public static int z;
+
+    static {
+        z = 30;
+        a = 40;
+    }
+
+    public static int a = 50;
+
+    public static final int b = 100;
+
+    public StaticVariableDemo() {
+    }
+
+    static class Nested {
+        public static String nestedClassStaticVariable = "test";
+    }
+}

core-java-modules/core-java-lang-3/src/test/java/com/baeldung/staticvariables/StaticVariableUnitTest.java

@@ -0,0 +1,113 @@
+package com.baeldung.staticvariables;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.lang.reflect.Field;
+
+import org.junit.jupiter.api.Test;
+
+public class StaticVariableUnitTest {
+
+    @Test
+    public void initializeStaticVariable_checkAssignedValues() {
+
+        try {
+            Class<?> staticVariableDemo = this.getClass()
+                .getClassLoader()
+                .loadClass("com.baeldung.staticvariables.StaticVariableDemo");
+
+            Field field1 = staticVariableDemo.getField("i");
+
+            assertThat(field1.getInt(staticVariableDemo)).isEqualTo(0);
+
+            Field field2 = staticVariableDemo.getField("j");
+
+            assertThat(field2.getInt(staticVariableDemo)).isEqualTo(20);
+
+        } catch (ClassNotFoundException | NoSuchFieldException | SecurityException e) {
+            e.printStackTrace();
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    @Test
+    public void initializeStaticVariable_checkStaticBlock() {
+
+        try {
+            Class<?> staticVariableDemo = this.getClass()
+                .getClassLoader()
+                .loadClass("com.baeldung.staticvariables.StaticVariableDemo");
+
+            Field field1 = staticVariableDemo.getField("z");
+
+            assertThat(field1.getInt(staticVariableDemo)).isEqualTo(30);
+
+            Field field2 = staticVariableDemo.getField("a");
+
+            assertThat(field2.getInt(staticVariableDemo)).isEqualTo(50);
+
+        } catch (ClassNotFoundException | NoSuchFieldException | SecurityException e) {
+            e.printStackTrace();
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    @Test
+    public void initializeStaticVariable_checkFinalValues() {
+
+        try {
+            Class<?> staticVariableDemo = this.getClass()
+                .getClassLoader()
+                .loadClass("com.baeldung.staticvariables.StaticVariableDemo");
+
+            Field field1 = staticVariableDemo.getField("b");
+
+            assertThat(field1.getInt(staticVariableDemo)).isEqualTo(100);
+
+        } catch (ClassNotFoundException | NoSuchFieldException | SecurityException e) {
+            e.printStackTrace();
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    @Test
+    public void initializeStaticVariable_checkInnerClassValues() {
+
+        try {
+            Class<?> staticVariableDemo = this.getClass()
+                .getClassLoader()
+                .loadClass("com.baeldung.staticvariables.StaticVariableDemo");
+
+            Class<?>[] nestedClasses = staticVariableDemo.getClasses();
+
+            for (Class<?> nestedClass : nestedClasses) {
+                if (nestedClass.getName()
+                    .equals("Nested")) {
+
+                    Field field1 = nestedClass.getField("nestedClassStaticVariable");
+                    assertThat(field1.get(nestedClass)).isEqualTo("test");
+                }
+            }
+
+        } catch (ClassNotFoundException | NoSuchFieldException | SecurityException e) {
+            e.printStackTrace();
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        }
+
+    }
+}

core-java-modules/pom.xml

@@ -72,6 +72,7 @@
 
         <module>core-java-io</module>
         <module>core-java-io-2</module>
+        <module>core-java-io-3</module>
         <module>core-java-io-apis</module>
         <module>core-java-io-conversions</module>
         <module>core-java-io-conversions-2</module>

ddd/src/main/java/com/baeldung/ddd/order/config/CustomMongoConfiguration.java

@@ -0,0 +1,46 @@
+package com.baeldung.ddd.order.config;
+
+import org.bson.Document;
+import org.joda.money.CurrencyUnit;
+import org.joda.money.Money;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.data.convert.ReadingConverter;
+import org.springframework.data.mongodb.core.convert.MongoCustomConversions;
+
+import java.math.BigDecimal;
+import java.util.Collections;
+
+@Configuration
+public class CustomMongoConfiguration {
+
+    @Bean
+    public MongoCustomConversions customConversions() {
+        return new MongoCustomConversions(Collections.singletonList(DocumentToMoneyConverter.INSTANCE));
+    }
+
+    @ReadingConverter
+    enum DocumentToMoneyConverter implements Converter<Document, Money> {
+
+        INSTANCE;
+
+        @Override
+        public Money convert(Document source) {
+            Document money = source.get("money", Document.class);
+
+            return Money.of(getCurrency(money), getAmount(money));
+        }
+
+        private CurrencyUnit getCurrency(Document money) {
+            Document currency = money.get("currency", Document.class);
+            String currencyCode = currency.getString("code");
+            return CurrencyUnit.of(currencyCode);
+        }
+
+        private BigDecimal getAmount(Document money) {
+            String amount = money.getString("amount");
+            return BigDecimal.valueOf(Double.parseDouble(amount));
+        }
+    }
+}

ddd/src/test/java/com/baeldung/ddd/order/jpa/PersistOrderLiveTest.java

@@ -1,19 +1,24 @@
 package com.baeldung.ddd.order.jpa;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
-import java.math.BigDecimal;
-import java.util.Arrays;
-
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
 
+import java.math.BigDecimal;
+import java.util.Arrays;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/*
+ To run this test we need to run the databases first.
+ A dedicated docker-compose.yml file is located under the resources directory.
+ We can run it by simple executing `docker-compose up`.
+ */
 @SpringJUnitConfig
 @SpringBootTest
-public class PersistOrderIntegrationTest {
+public class PersistOrderLiveTest {
     @Autowired
     private JpaOrderRepository repository;
 

ddd/src/test/java/com/baeldung/ddd/order/mongo/OrderMongoLiveTest.java

@@ -17,9 +17,14 @@ import com.baeldung.ddd.order.Order;
 import com.baeldung.ddd.order.OrderLine;
 import com.baeldung.ddd.order.Product;
 
+/*
+ To run this test we need to run the databases first.
+ A dedicated docker-compose.yml file is located under the resources directory.
+ We can run it by simple executing `docker-compose up`.
+ */
 @SpringJUnitConfig
 @SpringBootTest
-public class OrderMongoIntegrationTest {
+public class OrderMongoLiveTest {
     @Autowired
     private OrderMongoRepository repo;
 

ddd/src/test/java/com/baeldung/dddhexagonalspring/infrastracture/repository/CassandraDbOrderRepositoryLiveTest.java

@@ -18,10 +18,15 @@ import com.baeldung.dddhexagonalspring.domain.Product;
 import com.baeldung.dddhexagonalspring.domain.repository.OrderRepository;
 import com.baeldung.dddhexagonalspring.infrastracture.repository.cassandra.SpringDataCassandraOrderRepository;
 
+/*
+ To run this test we need to run the databases first.
+ A dedicated docker-compose.yml file is located under the resources directory.
+ We can run it by simple executing `docker-compose up`.
+ */
 @SpringJUnitConfig
 @SpringBootTest
 @TestPropertySource("classpath:ddd-layers-test.properties")
-class CassandraDbOrderRepositoryIntegrationTest {
+class CassandraDbOrderRepositoryLiveTest {
 
     @Autowired
     private SpringDataCassandraOrderRepository cassandraOrderRepository;

ddd/src/test/java/com/baeldung/dddhexagonalspring/infrastracture/repository/MongoDbOrderRepositoryLiveTest.java

@@ -18,10 +18,15 @@ import com.baeldung.dddhexagonalspring.domain.Product;
 import com.baeldung.dddhexagonalspring.domain.repository.OrderRepository;
 import com.baeldung.dddhexagonalspring.infrastracture.repository.mongo.SpringDataMongoOrderRepository;
 
+/*
+ To run this test we need to run the databases first.
+ A dedicated docker-compose.yml file is located under the resources directory.
+ We can run it by simple executing `docker-compose up`.
+ */
 @SpringJUnitConfig
 @SpringBootTest
 @TestPropertySource("classpath:ddd-layers-test.properties")
-class MongoDbOrderRepositoryIntegrationTest {
+class MongoDbOrderRepositoryLiveTest {
 
     @Autowired
     private SpringDataMongoOrderRepository mongoOrderRepository;

libraries-6/README.md

@@ -15,4 +15,5 @@ Remember, for advanced libraries like [Jackson](/jackson) and [JUnit](/testing-m
 - [A Guide to the Reflections Library](https://www.baeldung.com/reflections-library)
 - [Exactly Once Processing in Kafka](https://www.baeldung.com/kafka-exactly-once)
 - [Introduction to Protonpack](https://www.baeldung.com/java-protonpack)
+- [Java-R Integration](https://www.baeldung.com/java-r-integration)
 - More articles [[<-- prev]](/libraries-5)

libraries-6/pom.xml

@@ -92,8 +92,50 @@
             <version>${commonsio.version}</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.rosuda.REngine</groupId>
+            <artifactId>Rserve</artifactId>
+            <version>${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>
+        <!-- Needed for Renjin -->
+        <repository>
+            <id>bedatadriven</id>
+            <name>bedatadriven public repo</name>
+            <url>https://nexus.bedatadriven.com/content/groups/public/</url>
+        </repository>
+    </repositories>
+
+    <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>
+
     <properties>
         <kafka.version>2.0.0</kafka.version>
         <javapoet.version>1.10.0</javapoet.version>
@@ -105,6 +147,9 @@
         <commons-net.version>3.6</commons-net.version>
         <assertj.version>3.6.2</assertj.version>
         <commonsio.version>2.6</commonsio.version>
+        <renjin.version>RELEASE</renjin.version>
+        <rcaller.version>3.0</rcaller.version>
+        <rserve.version>1.8.1</rserve.version>
     </properties>
 
 

libraries-6/src/main/java/com/baeldung/r/FastRMean.java

@@ -1,8 +1,5 @@
 package com.baeldung.r;
 
-import java.io.IOException;
-import java.net.URISyntaxException;
-
 /**
  * FastR showcase.
  * 

libraries-6/src/main/java/com/baeldung/r/RCallerMean.java

@@ -1,12 +1,12 @@
 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;
 
+import java.io.IOException;
+import java.net.URISyntaxException;
+
 /**
  * RCaller showcase.
  * 

libraries-6/src/main/java/com/baeldung/r/RenjinMean.java

@@ -1,13 +1,12 @@
 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;
 
+import javax.script.ScriptException;
+import java.io.IOException;
+import java.net.URISyntaxException;
+
 /**
  * Renjin showcase.
  * 

libraries-6/src/test/java/com/baeldung/r/RCallerMeanIntegrationTest.java

@@ -1,14 +1,13 @@
 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;
 
+import javax.script.ScriptException;
+import java.io.IOException;
+import java.net.URISyntaxException;
+
 /**
  * Test for {@link RCallerMean}.
  * 

libraries-6/src/test/java/com/baeldung/r/RenjinMeanUnitTest.java

@@ -1,13 +1,11 @@
 package com.baeldung.r;
 
-import java.io.IOException;
-import java.net.URISyntaxException;
-
-import javax.script.ScriptException;
-
+import org.junit.Assert;
 import org.junit.Test;
 
-import org.junit.Assert;
+import javax.script.ScriptException;
+import java.io.IOException;
+import java.net.URISyntaxException;
 
 /**
  * Test for {@link RenjinMean}.

libraries-data-2/README.md

@@ -8,10 +8,8 @@ This module contains articles about libraries for data processing in Java.
 - [Introduction to Conflict-Free Replicated Data Types](https://www.baeldung.com/java-conflict-free-replicated-data-types)
 - [Introduction to javax.measure](https://www.baeldung.com/javax-measure)
 - [A Guide to Infinispan in Java](https://www.baeldung.com/infinispan)
-- [Guide to JMapper](https://www.baeldung.com/jmapper)
 - [An Introduction to SuanShu](https://www.baeldung.com/suanshu)
 - [Intro to Derive4J](https://www.baeldung.com/derive4j)
-- [Java-R Integration](https://www.baeldung.com/java-r-integration)
 - [Univocity Parsers](https://www.baeldung.com/java-univocity-parsers)
 - [Using Kafka MockConsumer](https://www.baeldung.com/kafka-mockconsumer)
 - [Using Kafka MockProducer](https://www.baeldung.com/kafka-mockproducer)

libraries-data-2/pom.xml

@@ -86,11 +86,6 @@
             <artifactId>spring-web</artifactId>
             <version>${spring.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.googlecode.jmapper-framework</groupId>
-            <artifactId>jmapper-core</artifactId>
-            <version>${jmapper.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.numericalmethod</groupId>
             <artifactId>suanshu</artifactId>
@@ -126,6 +121,11 @@
             <artifactId>kafka-clients</artifactId>
             <version>${kafka.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
         <dependency>
             <groupId>org.awaitility</groupId>
             <artifactId>awaitility</artifactId>
@@ -138,21 +138,6 @@
             <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>
         <dependency>
             <groupId>net.bytebuddy</groupId>
             <artifactId>byte-buddy</artifactId>
@@ -175,33 +160,8 @@
             <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>
 
-    <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>
-
     <properties>
         <flink.version>1.5.0</flink.version>
         <hll.version>1.6.0</hll.version>
@@ -210,17 +170,14 @@
         <infinispan.version>9.1.5.Final</infinispan.version>
         <jackson.version>2.9.8</jackson.version>
         <spring.version>4.3.8.RELEASE</spring.version>
-        <jmapper.version>1.6.0.1</jmapper.version>
         <suanshu.version>4.0.0</suanshu.version>
         <derive4j.version>1.1.0</derive4j.version>
         <assertj.version>3.6.2</assertj.version>
         <slf4j.version>1.7.25</slf4j.version>
         <awaitility.version>3.0.0</awaitility.version>
         <univocity.version>2.8.4</univocity.version>
-        <renjin.version>RELEASE</renjin.version>
-        <rcaller.version>3.0</rcaller.version>
-        <rserve.version>1.8.1</rserve.version>
         <kafka.version>2.5.0</kafka.version>
+        <guava.version>29.0-jre</guava.version>
     </properties>
 
 </project>

libraries-data/README.md

@@ -12,4 +12,5 @@ This module contains articles about libraries for data processing in Java.
 - [Introduction to Kafka Connectors](https://www.baeldung.com/kafka-connectors-guide)
 - [Kafka Connect Example with MQTT and MongoDB](https://www.baeldung.com/kafka-connect-mqtt-mongodb)
 - [Building a Data Pipeline with Flink and Kafka](https://www.baeldung.com/kafka-flink-data-pipeline)
+- [Guide to JMapper](https://www.baeldung.com/jmapper)
 More articles: [[next -->]](/../libraries-data-2)

libraries-data/pom.xml

@@ -126,6 +126,11 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>com.googlecode.jmapper-framework</groupId>
+            <artifactId>jmapper-core</artifactId>
+            <version>${jmapper.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -172,6 +177,7 @@
         <org.apache.crunch.crunch-core.version>0.15.0</org.apache.crunch.crunch-core.version>
         <org.apache.hadoop.hadoop-client>2.2.0</org.apache.hadoop.hadoop-client>
         <slf4j.version>1.7.25</slf4j.version>
+        <jmapper.version>1.6.0.1</jmapper.version>
     </properties>
 
 </project>