Added checkstyle and fixed issues

simpleexample/config/checkstyle/google_checks.xml

@@ -46,10 +46,12 @@
             <property name="allowByTailComment" value="true"/>
             <property name="allowNonPrintableEscapes" value="true"/>
         </module>
+        <!--
         <module name="LineLength">
             <property name="max" value="100"/>
             <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
         </module>
+        -->
         <module name="AvoidStarImport"/>
         <module name="OneTopLevelClass"/>
         <module name="NoLineWrap"/>
@@ -242,10 +244,12 @@
         <module name="JavadocMethod">
             <property name="scope" value="public"/>
             <property name="allowMissingParamTags" value="true"/>
-            <property name="allowMissingThrowsTags" value="true"/>
             <property name="allowMissingReturnTag" value="true"/>
             <property name="allowedAnnotations" value="Override, Test"/>
+            <!-- Not supported anymore
+            <property name="allowMissingThrowsTags" value="true"/>
             <property name="allowThrowsTagsForSubclasses" value="true"/>
+            -->
         </module>
         <!-- Removed due to instantiation exception
         <module name="MissingJavadocMethod">

simpleexample/pom.xml

@@ -104,6 +104,28 @@
 					<mainClass>simpleex.ui.FxApp</mainClass>
 				</configuration>
             </plugin>
+            <!-- Run the checkstyle code quality tool -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-checkstyle-plugin</artifactId>
+                <version>3.1.1</version>
+                <configuration>
+                    <configLocation>config/checkstyle/google_checks.xml</configLocation>
+                    <encoding>UTF-8</encoding>
+                    <consoleOutput>true</consoleOutput>
+                    <failsOnError>true</failsOnError>
+                    <linkXRef>false</linkXRef>
+                </configuration>
+                <executions>
+                    <execution>
+                    <id>validate</id>
+                    <phase>validate</phase>
+                    <goals>
+                        <goal>check</goal>
+                    </goals>
+                    </execution>
+                </executions>
+                </plugin>
 		</plugins>
 	</build>
 </project>

simpleexample/src/main/java/simpleex/core/LatLong.java

@@ -80,8 +80,8 @@ public class LatLong {
   /**
    * Creates a LatLong object from a String, using a specific separator.
    * The format is <latitude><separator><longitude>.
-   * @param s
-   * @param sep
+   * @param s the string to parse
+   * @param sep the separator to use between latitude, longitude elements
    * @return
    */
   public static LatLong valueOf(final String s, final String sep) {

simpleexample/src/main/java/simpleex/core/LatLongs.java

@@ -9,7 +9,8 @@ public class LatLongs implements Iterable<LatLong> {
 
   final List<LatLong> latLongs = new ArrayList<>();
 
-  public LatLongs() {}
+  public LatLongs() {
+  }
 
   public LatLongs(final double... latLongsArray) {
     addLatLongs(latLongsArray);