diff --git a/src/main/java/Fields/ActiveFields/Cistern.java b/src/main/java/Fields/ActiveFields/Cistern.java
index 5505de8..02e099d 100644
--- a/src/main/java/Fields/ActiveFields/Cistern.java
+++ b/src/main/java/Fields/ActiveFields/Cistern.java
@@ -3,6 +3,7 @@
 import Controll.Controller;
 import Fields.Pipe;
 import Players.Player;
+import StringResource.StringResourceController;
 
 import java.util.ArrayList;
 import java.util.Random;
@@ -93,29 +94,10 @@ public Pipe pickUpPipe() {
     @Override
     public String toString() {
         ArrayList<Player> players = this.getPlayers();
-        StringBuilder playerBuilder = new StringBuilder("null");
-        for (int i = 0; i < players.size(); i++) {
-            if(i == 0) playerBuilder.delete(0,3);
-            playerBuilder.append(Controller.objectReverseNames.get(players.get(i)));
-            if (i != players.size() - 1) {
-                playerBuilder.append(", ");
-            }
-        }
-
-
-
+        String playerBuilder = StringResourceController.stingBuilder(players);
 
         ArrayList<Pipe> pipes = this.getPipes();
-        StringBuilder pipeBuilder = new StringBuilder("null");
-        if(pipes != null) {
-            for (int i = 0; i < pipes.size(); i++) {
-                if (i == 0) pipeBuilder.delete(0,3);
-                pipeBuilder.append(Controller.objectReverseNames.get(pipes.get(i)));
-                if (i != pipes.size() - 1) {
-                    pipeBuilder.append(", ");
-                }
-            }
-        }
+        String pipeBuilder = StringResourceController.stingBuilder(pipes);
 
           return "name: "+ Controller.objectReverseNames.get(this)
                   + "\noccupied: " + this.isOccupied()
diff --git a/src/main/java/Fields/ActiveFields/Pump.java b/src/main/java/Fields/ActiveFields/Pump.java
index 59c2d13..69e9327 100644
--- a/src/main/java/Fields/ActiveFields/Pump.java
+++ b/src/main/java/Fields/ActiveFields/Pump.java
@@ -3,6 +3,7 @@
 import Controll.Controller;
 import Fields.Pipe;
 import Players.Player;
+import StringResource.StringResourceController;
 
 import java.util.ArrayList;
 import java.util.Random;
@@ -128,8 +129,6 @@ public String toString() {
 
         String playersNames = getPlayerNames();
 
-
-
         String pipesNames = getPipeNames();
 
 
@@ -157,30 +156,12 @@ public String toString() {
 
     private String getPlayerNames() {
         ArrayList<Player> players = this.getPlayers();
-        StringBuilder playerBuilder = new StringBuilder("null");
-        for (int i = 0; i < players.size(); i++) {
-            if(i == 0) playerBuilder.delete(0,3);
-            playerBuilder.append(Controller.objectReverseNames.get(players.get(i)));
-            if (i != players.size() - 1) {
-                playerBuilder.append(", ");
-            }
-        }
-        return playerBuilder.toString();
+        return StringResourceController.stingBuilder(players);
     }
 
 
     private String getPipeNames(){
         ArrayList<Pipe> pipes = this.getPipes();
-        StringBuilder pipeBuilder = new StringBuilder("null");
-        if(pipes != null) {
-            for (int i = 0; i < pipes.size(); i++) {
-                if (i == 0) pipeBuilder.delete(0,3);
-                pipeBuilder.append(Controller.objectReverseNames.get(pipes.get(i)));
-                if (i != pipes.size() - 1) {
-                    pipeBuilder.append(", ");
-                }
-            }
-        }
-        return pipeBuilder.toString();
+        return StringResourceController.stingBuilder(pipes);
     }
 }
diff --git a/src/main/java/Fields/ActiveFields/Spring.java b/src/main/java/Fields/ActiveFields/Spring.java
index a47c5d8..b6e842f 100644
--- a/src/main/java/Fields/ActiveFields/Spring.java
+++ b/src/main/java/Fields/ActiveFields/Spring.java
@@ -3,6 +3,7 @@
 import Controll.Controller;
 import Fields.Pipe;
 import Players.Player;
+import StringResource.StringResourceController;
 
 import java.util.ArrayList;
 
@@ -60,29 +61,12 @@ public void step() {
     @Override
     public String toString() {
         ArrayList<Player> players = this.getPlayers();
-        StringBuilder playerBuilder = new StringBuilder("null");
-        for (int i = 0; i < players.size(); i++) {
-            if(i == 0) playerBuilder.delete(0,3);
-            playerBuilder.append(Controller.objectReverseNames.get(players.get(i)));
-            if (i != players.size() - 1) {
-                playerBuilder.append(", ");
-            }
-        }
-
-
+        String playerBuilder = StringResourceController.stingBuilder(players);
 
 
         ArrayList<Pipe> pipes = this.getPipes();
-        StringBuilder pipeBuilder = new StringBuilder("null");
-        if(pipes != null) {
-            for (int i = 0; i < pipes.size(); i++) {
-                if (i == 0) pipeBuilder.delete(0,3);
-                pipeBuilder.append(Controller.objectReverseNames.get(pipes.get(i)));
-                if (i != pipes.size() - 1) {
-                    pipeBuilder.append(", ");
-                }
-            }
-        }
+        String pipeBuilder = StringResourceController.stingBuilder(pipes);
+
         return "name: "+ Controller.objectReverseNames.get(this)
                 + "\noccupied: " + this.isOccupied()
                 + "\nwater: " + getWaterNoChange()
diff --git a/src/main/java/Fields/Pipe.java b/src/main/java/Fields/Pipe.java
index 1801a81..e82f050 100644
--- a/src/main/java/Fields/Pipe.java
+++ b/src/main/java/Fields/Pipe.java
@@ -5,6 +5,7 @@
 import Fields.ActiveFields.ActiveFields;
 import Fields.ActiveFields.Pump;
 import Players.Player;
+import StringResource.StringResourceController;
 
 import java.util.ArrayList;
 import java.util.Random;
@@ -340,25 +341,10 @@ public void step(){
     @Override
     public String toString() {
         ArrayList<Player> players = this.getPlayers();
-        StringBuilder playerBuilder = new StringBuilder("null");
-        for (int i = 0; i < players.size(); i++) {
-            if(i == 0) playerBuilder.delete(0,3);
-            playerBuilder.append(Controller.objectReverseNames.get(players.get(i)));
-            if (i != players.size() - 1) {
-                playerBuilder.append(", ");
-            }
-        }
+        String playerBuilder = StringResourceController.stingBuilder(players);
 
         ArrayList<ActiveFields> localFields = this.getFields();
-        StringBuilder fieldBuilder = new StringBuilder("null");
-        for (int i = 0; i < localFields.size(); i++) {
-            if(i == 0) fieldBuilder.delete(0,3);
-            fieldBuilder.append(Controller.objectReverseNames.get(localFields.get(i)));
-            if (i != localFields.size() - 1) {
-                fieldBuilder.append(", ");
-            }
-        }
-
+        String fieldBuilder = StringResourceController.stingBuilder(localFields);
         return "name: " + Controller.objectReverseNames.get(this)
                 + "\noccupied: " + this.isOccupied()
                 + "\nwater: " + getWaterNoChange()
diff --git a/src/main/java/StringResource/StringResourceController.java b/src/main/java/StringResource/StringResourceController.java
index e8414b0..2e94262 100644
--- a/src/main/java/StringResource/StringResourceController.java
+++ b/src/main/java/StringResource/StringResourceController.java
@@ -1,5 +1,9 @@
 package StringResource;
 
+import Controll.Controller;
+
+import java.util.List;
+
 public final class StringResourceController {
     private StringResourceController(){}
     public static final String FALSE = "false";
@@ -10,4 +14,18 @@ private StringResourceController(){}
     public static final String WATER = "water";
     public static final String RANDOM_ON = "A véletlen események be lettek kapcsolva.";
     public static final String INVALID_ACTION = "A műveletet nem lehet végrehajtani";
+
+    public static String stingBuilder(List collection){
+        StringBuilder builder = new StringBuilder("null");
+        if(collection != null) {
+            for (int i = 0; i < collection.size(); i++) {
+                if (i == 0) builder.delete(0,3);
+                builder.append(Controller.objectReverseNames.get(collection.get(i)));
+                if (i != collection.size() - 1) {
+                    builder.append(", ");
+                }
+            }
+        }
+        return builder.toString();
+    }
 }
\ No newline at end of file