Utility classes have been marked as such

src/main/java/com/falsepattern/lib/util/FileUtil.java

@@ -22,12 +22,14 @@ package com.falsepattern.lib.util;
 
 import com.falsepattern.lib.StableAPI;
 
+import lombok.experimental.UtilityClass;
 import net.minecraft.launchwrapper.Launch;
 
 import java.io.File;
 
+@UtilityClass
 @StableAPI(since = "0.8.2")
-public class FileUtil {
+public final class FileUtil {
     @StableAPI.Expose
     public static File getMinecraftHome() {
         return Launch.minecraftHome == null ? new File(".") : Launch.minecraftHome;

src/main/java/com/falsepattern/lib/util/LangUtil.java

@@ -23,6 +23,7 @@ package com.falsepattern.lib.util;
 import com.falsepattern.lib.StableAPI;
 import lombok.NoArgsConstructor;
 import lombok.NonNull;
+import lombok.experimental.UtilityClass;
 import lombok.val;
 
 import cpw.mods.fml.common.registry.LanguageRegistry;
@@ -32,7 +33,7 @@ import java.util.Map;
 
 import static lombok.AccessLevel.PRIVATE;
 
-@NoArgsConstructor(access = PRIVATE)
+@UtilityClass
 @StableAPI(since = "0.8.0")
 public final class LangUtil {
     @StableAPI.Expose

src/main/java/com/falsepattern/lib/util/MathUtil.java

@@ -22,12 +22,14 @@ package com.falsepattern.lib.util;
 
 import com.falsepattern.lib.StableAPI;
 import com.falsepattern.lib.compat.Vec3i;
+import lombok.experimental.UtilityClass;
 
 import java.util.Random;
 import java.util.UUID;
 
+@UtilityClass
 @StableAPI(since = "0.10.0")
-public class MathUtil {
+public final class MathUtil {
     @StableAPI.Expose
     public static final float SQRT_2 = sqrt(2.0F);
     /**
@@ -621,4 +623,4 @@ public class MathUtil {
         x = x ^ x >>> 16;
         return x;
     }
-}
+}

src/main/java/com/falsepattern/lib/util/RenderUtil.java

@@ -23,6 +23,7 @@ package com.falsepattern.lib.util;
 import com.falsepattern.lib.StableAPI;
 import lombok.NoArgsConstructor;
 import lombok.SneakyThrows;
+import lombok.experimental.UtilityClass;
 import lombok.val;
 
 import net.minecraft.client.Minecraft;
@@ -36,7 +37,7 @@ import static lombok.AccessLevel.PRIVATE;
 import static net.minecraft.client.Minecraft.getMinecraft;
 
 @SideOnly(CLIENT)
-@NoArgsConstructor(access = PRIVATE)
+@UtilityClass
 @StableAPI(since = "0.8.0")
 public final class RenderUtil {
     private static final Timer MINECRAFT_TIMER = getMinecraftTimer();

src/main/java/com/falsepattern/lib/util/ResourceUtil.java

@@ -21,6 +21,7 @@
 package com.falsepattern.lib.util;
 
 import com.falsepattern.lib.StableAPI;
+import lombok.experimental.UtilityClass;
 import lombok.val;
 
 import java.io.ByteArrayOutputStream;
@@ -34,8 +35,9 @@ import java.nio.charset.StandardCharsets;
 /**
  * A utility class for reading resources in many ways.
  */
+@UtilityClass
 @StableAPI(since = "0.6.0")
-public class ResourceUtil {
+public final class ResourceUtil {
 
     /**
      * Reads a resource as a string, using the {@link StandardCharsets#UTF_8} charset, from a specific jar file. See