Structure improvements

src/main/java/be/cylab/java/wowa/training/Trainer.java

@@ -374,7 +374,7 @@ public class Trainer {
             double[] expected
     ) {
         List<SolutionDistance> parents = this.selectParents(population,
-                this.getParameters().getNumber_of_parents(),
+                this.getParameters().getNumberOfParents(),
                 this.getParameters().getSelectionMethod());
         List<SolutionDistance> new_generation = this.doReproduction(parents);
         List<SolutionDistance> mutated =

src/main/java/be/cylab/java/wowa/training/TrainerParameters.java

@@ -64,15 +64,18 @@ public class TrainerParameters {
 
     }
 
-
-    public int getNumber_of_parents() {
-        return number_of_parents;
+    /**
+     * Getter for number of parents.
+     * @return int
+     */
+    final int getNumberOfParents() {
+        return this.number_of_parents;
     }
 
     /**
      * @return Logger
      */
-    final protected Logger getLogger() {
+    final Logger getLogger() {
         return logger;
     }
 
@@ -81,7 +84,7 @@ public class TrainerParameters {
      * Getter for population_size.
      * @return int
      */
-    final public int getPopulationSize() {
+    final int getPopulationSize() {
         return population_size;
     }
 
@@ -105,7 +108,8 @@ public class TrainerParameters {
      */
     private void setCrossoverRate(final int crossover_rate) {
         this.crossover_rate = crossover_rate;
-        int nbr_parents = Math.round(this.population_size * (1 - crossover_rate / 100));
+        int nbr_parents = Math.round(this.population_size
+                * (1 - crossover_rate / 100));
         if (nbr_parents % 2 == 1) {
             nbr_parents++;
         }
@@ -116,7 +120,7 @@ public class TrainerParameters {
      * Getter for mutation rate.
      * @return int
      */
-    public int getMutationRate() {
+    final int getMutationRate() {
         return mutation_rate;
     }