src/main/java/Job/Job.java

@@ -1,10 +1,11 @@
 package Job;
 
-import Shared.HasExperience;
+import Shared.ExperienceTable;
+import Shared.Levelable;
 
 import java.util.Objects;
 
-public abstract class Job implements HasExperience {
+public abstract class Job implements Levelable {
     protected int level;
     protected int experience;
     protected String name;
@@ -18,11 +19,6 @@ public abstract class Job implements HasExperience {
         return level;
     }
 
-    public void levelUp() {
-        level++;
-        experience = experience - 100;
-    }
-
     @Override
     public String toString() {
         return String.format("Job: %s. Level: %d", name, level);
@@ -39,4 +35,30 @@ public abstract class Job implements HasExperience {
         return Objects.hash(name);
     }
 
+    @Override
+    public int remainingXpUntilLevelUp() {
+        return  ExperienceTable.getXpForLevel(level) -  experience;
+    }
+
+    @Override
+    public void gainExperience(int exp) {
+        experience += exp;
+        if (experience >= ExperienceTable.getXpForLevel(level)) {
+            levelUp();
+        }
+    }
+
+    @Override
+    public int getExperience() {
+        return experience;
+    }
+
+    @Override
+    public void levelUp() {
+        experience = experience - ExperienceTable.getXpForLevel(level);
+        level++;
+    }
+
+
+
 }

src/main/java/Job/Miner.java

@@ -14,21 +14,4 @@ public class Miner extends Job {
             a.getInventory().addItem("Stone");
         }
     }
-
-    @Override
-    public int getExperience() {
-        return experience;
-    }
-
-    @Override
-    public void gainExperience(int exp) {
-        experience += exp;
-        if (experience >= 100) {
-            levelUp();
-        }
-    }
-
-    public int remainingXpUntilLevelUp() {
-        return 100;
-    }
 }

src/main/java/Shared/ExperienceTable.java

@@ -0,0 +1,16 @@
+package Shared;
+
+import java.util.Map;
+
+public final class ExperienceTable {
+    private static final Map<Integer, Integer> XP_TABLE = Map.of(
+            1, 100,
+            2, 250
+    );
+
+    private ExperienceTable() {}
+
+    public static int getXpForLevel(int level) {
+        return XP_TABLE.getOrDefault(level, Integer.MAX_VALUE);
+    }
+}

src/main/java/Shared/Levelable.java

@@ -1,6 +1,6 @@
 package Shared;
 
-public interface HasExperience {
+public interface Levelable {
     int getLevel();
 
     int getExperience();
@@ -8,4 +8,6 @@ public interface HasExperience {
     void gainExperience(int exp);
 
     void levelUp();
+
+    int remainingXpUntilLevelUp();
 }