Merge branch 'eugenp:master' into master

core-java-modules/core-java-11-2/README.md

@@ -7,3 +7,4 @@ This module contains articles about Java 11 core features
 - [Guide to Java Reflection](http://www.baeldung.com/java-reflection)
 - [Guide to Java 8’s Collectors](https://www.baeldung.com/java-8-collectors)
 - [New Features in Java 11](https://www.baeldung.com/java-11-new-features)
+- [Getting the Java Version at Runtime](https://www.baeldung.com/get-java-version-runtime)

core-java-modules/core-java-lang-4/README.md

@@ -5,3 +5,4 @@ This module contains articles about core features in the Java language
 - [The Java final Keyword – Impact on Performance](https://www.baeldung.com/java-final-performance)
 - [The package-info.java File](https://www.baeldung.com/java-package-info)
 - [What are Compile-time Constants in Java?](https://www.baeldung.com/java-compile-time-constants)
+- [Java Objects.hash() vs Objects.hashCode()](https://www.baeldung.com/java-objects-hash-vs-objects-hashcode)

core-java-modules/core-java-lang-oop-patterns/README.md

@@ -7,3 +7,4 @@ This module contains articles about Object-oriented programming (OOP) patterns i
 - [Inheritance and Composition (Is-a vs Has-a relationship) in Java](https://www.baeldung.com/java-inheritance-composition)
 - [Immutable Objects in Java](https://www.baeldung.com/java-immutable-object)
 - [How to Make a Deep Copy of an Object in Java](https://www.baeldung.com/java-deep-copy)
+- [Using an Interface vs. Abstract Class in Java](https://www.baeldung.com/java-interface-vs-abstract-class)

core-java-modules/core-java-regex/src/test/java/com/baeldung/ignore/pattern/metacharacters/IgnoringPatternMetacharactersUnitTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.ignore.pattern.metacharacters;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.junit.Test;
+
+public class IgnoringPatternMetacharactersUnitTest {
+    private static final String dollarAmounts = "$100.25, $100.50, $150.50, $100.50, $100.75";
+    private static final String patternStr = "$100.50";
+
+    @Test
+    public void givenPatternStringHasMetacharacters_whenPatternMatchedWithoutEscapingMetacharacters_thenNoMatchesFound() {
+        Pattern pattern = Pattern.compile(patternStr);
+        Matcher matcher = pattern.matcher(dollarAmounts);
+
+        int matches = 0;
+        while (matcher.find()) {
+            matches++;
+        }
+
+        assertEquals(0, matches);
+    }
+
+    @Test
+    public void givenPatternStringHasMetacharacters_whenPatternCompiledUsingManuallyMetaEscapedPattern_thenMatchingSuccessful() {
+        String metaEscapedPatternStr = "\\Q" + patternStr + "\\E";
+        Pattern pattern = Pattern.compile(metaEscapedPatternStr);
+        Matcher matcher = pattern.matcher(dollarAmounts);
+
+        int matches = 0;
+        while (matcher.find()) {
+            matches++;
+        }
+
+        assertEquals(2, matches);
+    }
+
+    @Test
+    public void givenPatternStringHasMetacharacters_whenPatternCompiledUsingLiteralPatternFromQuote_thenMatchingSuccessful() {
+        String literalPatternStr = Pattern.quote(patternStr);
+        Pattern pattern = Pattern.compile(literalPatternStr);
+        Matcher matcher = pattern.matcher(dollarAmounts);
+
+        int matches = 0;
+        while (matcher.find()) {
+            matches++;
+        }
+
+        assertEquals(2, matches);
+    }
+}

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

@@ -12,4 +12,5 @@ This module contains articles about the Stream API in Java.
 - [Should We Close a Java Stream?](https://www.baeldung.com/java-stream-close)
 - [Returning Stream vs. Collection](https://www.baeldung.com/java-return-stream-collection)
 - [Convert a Java Enumeration Into a Stream](https://www.baeldung.com/java-enumeration-to-stream)
+- [When to Use a Parallel Stream in Java](https://www.baeldung.com/java-when-to-use-parallel-stream)
 - More articles: [[<-- prev>]](/../core-java-streams-2)

core-java-modules/core-java-string-conversions-2/README.md

@@ -6,4 +6,5 @@ This module contains articles about string conversions from/to another type.
 - [Java String Conversions](https://www.baeldung.com/java-string-conversions)
 - [Convert String to Byte Array and Reverse in Java](https://www.baeldung.com/java-string-to-byte-array)
 - [Convert Character Array to String in Java](https://www.baeldung.com/java-char-array-to-string)
+- [Converting String to BigDecimal in Java](https://www.baeldung.com/java-string-to-bigdecimal)
 - More articles: [[<-- prev]](/core-java-string-conversions)

core-java-modules/core-java-string-operations-3/README.md

@@ -3,3 +3,4 @@
 - [Version Comparison in Java](https://www.baeldung.com/java-comparing-versions)
 - [Java (String) or .toString()?](https://www.baeldung.com/java-string-casting-vs-tostring)
 - [Split Java String by Newline](https://www.baeldung.com/java-string-split-by-newline)
+- [Split a String in Java and Keep the Delimiters](https://www.baeldung.com/java-split-string-keep-delimiters)

maven-modules/maven-copy-files/README.md

@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Copying Files With Maven](https://www.baeldung.com/maven-copy-files)

maven-modules/maven-printing-plugins/pom.xml

@@ -49,9 +49,11 @@
                             <goal>echo</goal>
                         </goals>
                         <configuration>
-                            <message>Hello, world</message>
+                            <message>
-                            <message>Embed a line break: ${line.separator}</message>
+                                Hello, world
-                            <message>ArtifactId is ${project.artifactId}</message>
+                                Embed a line break: ${line.separator}
+                                ArtifactId is ${project.artifactId}
+                            </message>
                             <level>INFO</level>
                             <toFile>/logs/log-echo.txt</toFile>
                             <append>true</append>

persistence-modules/java-jpa-3/README.md

@@ -10,3 +10,4 @@ This module contains articles about the Java Persistence API (JPA) in Java.
 - [JPA CascadeType.REMOVE vs orphanRemoval](https://www.baeldung.com/jpa-cascade-remove-vs-orphanremoval)
 - [A Guide to MultipleBagFetchException in Hibernate](https://www.baeldung.com/java-hibernate-multiplebagfetchexception)
 - [How to Convert a Hibernate Proxy to a Real Entity Object](https://www.baeldung.com/hibernate-proxy-to-real-entity-object)
+- [Returning an Auto-Generated Id with JPA](https://www.baeldung.com/jpa-get-auto-generated-id)

persistence-modules/spring-data-jpa-annotations/README.md

@@ -9,6 +9,7 @@ This module contains articles about annotations used in Spring Data JPA
 - [Spring JPA @Embedded and @EmbeddedId](https://www.baeldung.com/spring-jpa-embedded-method-parameters)
 - [Programmatic Transaction Management in Spring](https://www.baeldung.com/spring-programmatic-transaction-management)
 - [JPA Entity Lifecycle Events](https://www.baeldung.com/jpa-entity-lifecycle-events)
+- [Overriding Column Definition With @AttributeOverride](https://www.baeldung.com/jpa-attributeoverride)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

persistence-modules/spring-data-jpa-crud/README.md

@@ -10,6 +10,7 @@ This module contains articles about CRUD operations in Spring Data JPA
 - [Batch Insert/Update with Hibernate/JPA](https://www.baeldung.com/jpa-hibernate-batch-insert-update)
 - [Difference Between save() and saveAndFlush() in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-save-saveandflush)
 - [Generate Database Schema with Spring Data JPA](https://www.baeldung.com/spring-data-jpa-generate-db-schema)
+- [How to Implement a Soft Delete with Spring JPA](https://www.baeldung.com/spring-jpa-soft-delete)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

spring-boot-modules/spring-boot-cassandre/README.md

@@ -8,4 +8,4 @@ This project is an example of a trading bot developed with Cassandre
 * `mvn spring-boot:run` - Run the bot
 
 ## Relevant Articles
-- [Build a Trading Bot with Cassandre Spring Boot Starter](https://www.baeldung.com/build-a-trading-bot-with-cassandre-spring-boot-starter/)
+- [Build a Trading Bot with Cassandre Spring Boot Starter](https://www.baeldung.com/cassandre-spring-boot-trading-bot)

spring-boot-modules/spring-boot-mvc-3/README.md

@@ -9,4 +9,5 @@ This module contains articles about Spring Web MVC in Spring Boot projects.
 - [Spring MVC Async vs Spring WebFlux](https://www.baeldung.com/spring-mvc-async-vs-webflux)
 - [Differences in @Valid and @Validated Annotations in Spring](https://www.baeldung.com/spring-valid-vs-validated)
 - [CharacterEncodingFilter In SpringBoot](https://www.baeldung.com/spring-boot-characterencodingfilter)
+- [HandlerInterceptors vs. Filters in Spring MVC](https://www.baeldung.com/spring-mvc-handlerinterceptor-vs-filter)
 - More articles: [[prev -->]](/spring-boot-modules/spring-boot-mvc-2)

testing-modules/testing-libraries-2/README.md

@@ -2,3 +2,4 @@
 
 - [Guide to the System Rules Library](https://www.baeldung.com/java-system-rules-junit)
 - [Guide to the System Stubs Library](https://www.baeldung.com/java-system-stubs)
+- [Code Coverage with SonarQube and JaCoCo](https://www.baeldung.com/sonarqube-jacoco-code-coverage)