added exp tables to classes

src/main/java/net/Indyuce/mmocore/api/player/PlayerData.java

@@ -580,6 +580,10 @@ public class PlayerData extends OfflinePlayerData implements Closable, Experienc
                 new SmallParticleEffect(getPlayer(), Particle.SPELL_INSTANT);
             }
             getStats().updateStats();
+
+            // Apply class experience table
+            if (getProfess().hasExperienceTable())
+                getProfess().getExperienceTable().claim(this, level, getProfess());
         }
 
         refreshVanillaExp();

src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java

@@ -245,9 +245,14 @@ public class PlayerClass extends PostLoadObject implements ExperienceObject {
         return expCurve;
     }
 
-    @Override
+    @NotNull
     public ExperienceTable getExperienceTable() {
-        return expTable;
+        return Objects.requireNonNull(expTable, "Class has no exp table");
+    }
+
+    @Override
+    public boolean hasExperienceTable() {
+        return expTable != null;
     }
 
     public ItemStack getIcon() {

src/main/java/net/Indyuce/mmocore/experience/ExperienceObject.java

@@ -1,6 +1,7 @@
 package net.Indyuce.mmocore.experience;
 
 import net.Indyuce.mmocore.experience.droptable.ExperienceTable;
+import org.jetbrains.annotations.NotNull;
 
 import javax.annotation.Nullable;
 
@@ -24,6 +25,8 @@ public interface ExperienceObject {
     /**
      * @return Table read when leveling up
      */
-    @Nullable
+    @NotNull
     ExperienceTable getExperienceTable();
+
+    boolean hasExperienceTable();
 }

src/main/java/net/Indyuce/mmocore/experience/Profession.java

@@ -10,6 +10,7 @@ import net.Indyuce.mmocore.experience.provider.ProfessionExperienceDispenser;
 import org.apache.commons.lang.Validate;
 import org.bukkit.configuration.ConfigurationSection;
 import org.bukkit.configuration.file.FileConfiguration;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -113,10 +114,12 @@ public class Profession extends PostLoadObject implements ExperienceObject {
         return experience;
     }
 
+    @Override
     public boolean hasExperienceTable() {
         return expTable != null;
     }
 
+    @NotNull
     public ExperienceTable getExperienceTable() {
         return Objects.requireNonNull(expTable, "Profession has no exp table");
     }