src/main/java/Entity/Player.java

@@ -3,6 +3,7 @@ package Entity;
 import Action.Action;
 import Action.Actor;
 import Combat.HasHealth;
+import Inventory.Inventory;
 import Job.Job;
 import Job.HasJob;
 import Inventory.HasInventory;
@@ -14,7 +15,7 @@ public class Player extends Entity implements Movable, Actor, HasInventory, HasJ
     protected int health;
     protected Job job;
     protected Position position;
-    protected List<String> items = new LinkedList<>();
+    protected Inventory inventory= new Inventory();
     public Player(String name, Job job) {
         super(name);
         this.job = job;
@@ -45,13 +46,13 @@ public class Player extends Entity implements Movable, Actor, HasInventory, HasJ
         this.job = job;
     }
 
-    public List<String> getInventory() {
-        return items;
+    public Inventory getInventory() {
+        return inventory;
     }
 
     @Override
     public void performAction(Action action) {
-        action.exectue(this);
+        action.execute(this);
     }
 
     @Override

src/main/java/Inventory/HasInventory.java

@@ -3,5 +3,5 @@ package Inventory;
 import java.util.List;
 
 public interface HasInventory {
-    List<String> getInventory();
+     Inventory getInventory();
 }

src/main/java/Inventory/Inventory.java

@@ -0,0 +1,24 @@
+package Inventory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Inventory {
+    List<String> items;
+
+    public Inventory() {
+        items = new ArrayList<>();
+    }
+
+    List<String> getItems() {
+        return items;
+    }
+
+    public void addItem(String item) {
+        items.add(item);
+    }
+
+    public boolean containsItem(String item) {
+        return items.contains(item);
+    }
+}

src/main/java/Job/Miner.java

@@ -11,7 +11,7 @@ public class Miner extends Job {
 
     public void dig(Actor actor) {
         if (actor instanceof HasInventory a) {
-            a.getInventory().add("Stone");
+            a.getInventory().addItem("Stone");
         }
     }
 

src/test/java/PlayerTest.java

@@ -38,9 +38,8 @@ class PlayerTest {
     @Test
     void miner_can_dig() {
         var p = new Player("John");
-        var job = new Miner();
-        p.learnJob(job);
+        p.learnJob(new Miner());
         p.performAction(new DigAction());
-        assertTrue(p.getInventory().contains("Stone"));
+        assertTrue(p.getInventory().containsItem("Stone"));
     }
 }