Merge pull request #6650 from kivicko/BAEL-2797-Create-a-java-math-module

BAEL-2797 create a java math module

java-math/.gitignore

@@ -0,0 +1,4 @@
+/target/
+.settings/
+.classpath
+.project

java-math/README.md

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+## Relevant articles:
+
+- [Calculate Factorial in Java](https://www.baeldung.com/java-calculate-factorial)
+- [Generate Combinations in Java](https://www.baeldung.com/java-combinations-algorithm)
+- [Check If Two Rectangles Overlap In Java](https://www.baeldung.com/java-check-if-two-rectangles-overlap)
+- [Calculate the Distance Between Two Points in Java](https://www.baeldung.com/java-distance-between-two-points)
+- [Find the Intersection of Two Lines in Java](https://www.baeldung.com/java-intersection-of-two-lines)
+- [Round Up to the Nearest Hundred](https://www.baeldung.com/java-round-up-nearest-hundred)
+- [Calculate Percentage in Java](https://www.baeldung.com/java-calculate-percentage)
+- [Convert Latitude and Longitude to a 2D Point in Java](https://www.baeldung.com/java-convert-latitude-longitude)

java-math/pom.xml

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+<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>java-math</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>java-math</name>
+    
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-math3</artifactId>
+            <version>${commons-math3.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>commons-codec</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${org.assertj.core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.dpaukov</groupId>
+            <artifactId>combinatoricslib3</artifactId>
+            <version>3.3.0</version>
+         </dependency>
+    </dependencies>
+
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>exec-maven-plugin</artifactId>
+                    <version>${exec-maven-plugin.version}</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
+
+    <properties>
+        <commons-math3.version>3.6.1</commons-math3.version>
+        <org.assertj.core.version>3.9.0</org.assertj.core.version>
+        <commons-codec.version>1.11</commons-codec.version>
+        <guava.version>27.0.1-jre</guava.version>
+    </properties>
+
+</project>

java-math/src/main/java/com/baeldung/algorithms/percentage/PercentageCalculator.java

@@ -1,4 +1,4 @@
-package com.baeldung.percentage;
+package com.baeldung.algorithms.percentage;
 
 import java.util.Scanner;
 

java-math/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

java-math/src/test/java/com/baeldung/algorithms/distancebetweenpoints/DistanceBetweenPointsServiceUnitTest.java

@@ -2,8 +2,6 @@ package com.baeldung.algorithms.distancebetweenpoints;
 
 import org.junit.Test;
 
-import com.baeldung.algorithms.distancebetweenpoints.DistanceBetweenPointsService;
-
 import static org.junit.Assert.assertEquals;
 
 public class DistanceBetweenPointsServiceUnitTest {

java-math/src/test/java/com/baeldung/algorithms/percentage/PercentageCalculatorUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.percentage;
+package com.baeldung.algorithms.percentage;
 
 import org.junit.Assert;
 import org.junit.Test;

java-math/src/test/java/com/baeldung/algorithms/rectanglesoverlap/RectangleUnitTest.java

@@ -4,9 +4,6 @@ import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.assertFalse;
 import org.junit.Test;
 
-import com.baeldung.algorithms.rectanglesoverlap.Point;
-import com.baeldung.algorithms.rectanglesoverlap.Rectangle;
-
 public class RectangleUnitTest {
 
     @Test