Make classes final.

src/main/java/de/articdive/jnoise/noise/octaved/OctaveNoiseResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class OctaveNoiseResult implements NoiseResult {
+public final class OctaveNoiseResult implements NoiseResult {
     private final double noiseValue;
 
     OctaveNoiseResult(double noiseValue) {

src/main/java/de/articdive/jnoise/noise/opensimplex/FastSimplexBuilder.java

@@ -28,7 +28,7 @@
 /**
  * @author Lukas Mansour
  */
-public class FastSimplexBuilder extends NoiseBuilder {
+public final class FastSimplexBuilder extends NoiseBuilder {
     private long seed = 1729;
     private double frequency = 1.0;
     private Simplex2DVariant variant2D = Simplex2DVariant.CLASSIC;

src/main/java/de/articdive/jnoise/noise/opensimplex/FastSimplexGenerator.java

@@ -27,7 +27,7 @@
 /**
  * @author Lukas Mansour
  */
-public class FastSimplexGenerator extends NoiseGenerator<FastSimplexResult> {
+public final class FastSimplexGenerator extends NoiseGenerator<FastSimplexResult> {
     private final OpenSimplex2F simplex;
     private final double frequency;
     private final Simplex2DVariant variant2D;

src/main/java/de/articdive/jnoise/noise/opensimplex/FastSimplexResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class FastSimplexResult implements NoiseResult {
+public final class FastSimplexResult implements NoiseResult {
     private final double noiseValue;
 
     FastSimplexResult(double noiseValue) {

src/main/java/de/articdive/jnoise/noise/opensimplex/SuperSimplexBuilder.java

@@ -28,7 +28,7 @@
 /**
  * @author Lukas Mansour
  */
-public class SuperSimplexBuilder extends NoiseBuilder {
+public final class SuperSimplexBuilder extends NoiseBuilder {
     private long seed = 1729;
     private double frequency = 1.0;
     private Simplex2DVariant variant2D = Simplex2DVariant.CLASSIC;

src/main/java/de/articdive/jnoise/noise/opensimplex/SuperSimplexGenerator.java

@@ -27,7 +27,7 @@
 /**
  * @author Lukas Mansour
  */
-public class SuperSimplexGenerator extends NoiseGenerator<SuperSimplexResult> {
+public final class SuperSimplexGenerator extends NoiseGenerator<SuperSimplexResult> {
     private final OpenSimplex2S simplex;
     private final double frequency;
     private final Simplex2DVariant variant2D;

src/main/java/de/articdive/jnoise/noise/opensimplex/SuperSimplexResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class SuperSimplexResult implements NoiseResult {
+public final class SuperSimplexResult implements NoiseResult {
     private final double noiseValue;
 
     SuperSimplexResult(double noiseValue) {

src/main/java/de/articdive/jnoise/noise/perlin/PerlinNoiseResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class PerlinNoiseResult implements NoiseResult {
+public final class PerlinNoiseResult implements NoiseResult {
     private final double noiseValue;
 
     PerlinNoiseResult(double noiseValue) {

src/main/java/de/articdive/jnoise/noise/value/ValueNoiseResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class ValueNoiseResult implements NoiseResult {
+public final class ValueNoiseResult implements NoiseResult {
     private final double noiseValue;
 
     ValueNoiseResult(double noiseValue) {

src/main/java/de/articdive/jnoise/noise/white/WhiteNoiseResult.java

@@ -23,7 +23,7 @@
 /**
  * @author Lukas Mansour
  */
-public class WhiteNoiseResult implements NoiseResult {
+public final class WhiteNoiseResult implements NoiseResult {
     private final double noiseValue;
 
     WhiteNoiseResult(double noiseValue) {