Adding the original version from the blog.

.gitignore

@@ -4,3 +4,4 @@
 *.jar
 *.war
 *.ear
+/target/

pom.xml

@@ -0,0 +1,73 @@
+<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>
+    <groupId>de.lusiardi.maven</groupId>
+    <artifactId>mavenExecutableJarFiles</artifactId>
+    <packaging>jar</packaging>
+    <version>0.1</version>
+    <name>Ausführbare Jar-Dateien mit Maven</name>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>
+                    org.apache.maven.plugins
+                </groupId>
+                <artifactId>
+                    maven-compiler-plugin
+                </artifactId>
+                <version>2.1</version>
+                <configuration>
+                    <source>
+                        1.5
+                    </source>
+                    <target>
+                        1.5
+                    </target>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>1.4</version>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                        <configuration>
+                            <transformers>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                    <mainClass>b1.Main</mainClass>
+                                </transformer>
+                            </transformers>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.8.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>jline</groupId>
+            <artifactId>jline</artifactId>
+            <version>0.9.9</version>
+        </dependency>
+    </dependencies>
+    <repositories>
+        <repository>
+            <id>jline</id>
+            <name>JLine Project Repository</name>
+            <url>http://jline.sourceforge.net/m2repo</url>
+        </repository>
+    </repositories>
+</project>

src/main/java/b1/Main.java

@@ -0,0 +1,23 @@
+package b1;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import jline.ConsoleReader;
+
+public class Main {
+
+    public static void main(String[] args) throws IOException {
+        ConsoleReader reader = new ConsoleReader();
+        String line;
+        PrintWriter out = new PrintWriter(System.out);
+        while ((line = reader.readLine("number or quit> ")) != null) {
+            if (line.equalsIgnoreCase("quit")) {
+                break;
+            }
+            int i = Integer.parseInt(line);
+            System.out.println(
+                    Math.square(i) + " ist " + i + " quadriert");
+            out.flush();
+        }
+    }
+}

src/main/java/b1/Math.java

@@ -0,0 +1,8 @@
+package b1;
+
+public class Math {
+
+    public static int square(int a) {
+        return a * a;
+    }
+}

src/test/java/b1/MathTest.java

@@ -0,0 +1,12 @@
+package b1;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class MathTest {
+
+    @Test
+    public void testSqure() {
+        Assert.assertEquals(16, Math.square(4));
+    }
+}