Tried tu debug without success :C. Now thinking of unicorns to be happier :D

server/game-logic/Manager/AttackInformations/AttackInformations.java

@@ -0,0 +1,31 @@
+package AttackInformations;
+
+public class AttackInformations{
+    private int attack_field_dice;
+    private int defense_field_dice;
+    private boolean attack_success;
+    private boolean attack_allowed;
+
+    public AttackInformations(int input_att_field, int input_def_field,boolean input_attack_allowed){
+        attack_field_dice = input_att_field;
+        defense_field_dice = input_def_field;
+        attack_success = (input_att_field >= input_def_field);
+        attack_allowed = input_attack_allowed;
+    }
+
+    public int get_attack_field_dice(){
+        return attack_field_dice;
+    }
+
+    public int get_defense_field_dice(){
+        return defense_field_dice;
+    }
+
+    public boolean get_attack_success(){
+        return attack_success;
+    }
+
+    public boolean get_attack_allowed(){
+        return attack_allowed;
+    }
+}

server/game-logic/Manager/Field/Field.java

@@ -1,3 +1,5 @@
+package Field;
+
 import java.util.ArrayList;
 
 import Player;

server/game-logic/Manager/Field/Player/Player.java

@@ -1,3 +1,5 @@
+package Field.Player;
+
 public class Player{
     private String name;
     private int playerid;

server/game-logic/Manager/GameManager.java

@@ -1,10 +1,13 @@
-import Player;
-import Field;
+package Manager;
+
+import Field.Field;
+import Player.Player;
+import AttackInformations.AttackInformations;
 
 import java.util.ArrayList;
 import java.util.Random;
 
-public class Max{
+class Max{
     private int max;
 
     public Max(int num1, int num2){
@@ -16,41 +19,11 @@ public class Max{
         }
     }
 
-    public get_max(){
+    public int get_max(){
         return max;
     }
 }
 
-public class AttackInformations{
-    private int attack_field_dice;
-    private int defense_field_dice;
-    private boolean attack_success;
-    private boolean attack_allowed;
-
-    public AttackInformations(int input_att_field, int input_def_field,boolean input_attack_allowed){
-        attack_field_dice = input_att_field;
-        defense_field_dice = input_def_field;
-        attack_success = (input_att_field >= input_def_field);
-        attack_allowed = input_attack_allowed;
-    }
-
-    public int get_attack_field_dice(){
-        return attack_field_dice;
-    }
-
-    public int get_defense_field_dice(){
-        return defense_field_dice;
-    }
-
-    public boolean get_attack_success(){
-        return attack_success;
-    }
-
-    public boolean get_attack_allowed(){
-        return attack_allowed;
-    }
-}
-
 public class GameManager {
     private ArrayList<Field> fields;
     private ArrayList<Player> players;
@@ -69,12 +42,13 @@ public class GameManager {
 
     public void add_player(String input){
         if(players.size() < 8){
-            players.add(Player(input,players.size()));
+            Player pl =  new Player(input,players.size());
+            players.add(pl);
         }
     }
 
     public AttackInformations attack_field(Field att_field, Field def_field){
-        boolean attack_allowed;
+        boolean attack_allowed= false;
         boolean att_field_allowed = false;
         boolean def_field_allowed = false;
 
@@ -95,6 +69,8 @@ public class GameManager {
 
         attack_allowed = att_field_allowed && def_field_allowed && attack_allowed;
 
+        AttackInformations infor;
+
         if(attack_allowed){
             int att_field_sum = 0;
             int def_field_sum = 0;
@@ -106,17 +82,21 @@ public class GameManager {
                 def_field_sum += 1 + rand_num_gen.nextInt(6);
             }
 
-            AttackInformations infor = new AttackInformations(att_field_sum, def_field_sum,true);
+            infor = new AttackInformations(att_field_sum, def_field_sum,true);
             
             if(infor.get_attack_success()){
-                def_field.set_dice_number(Max(att_field.get_dice_number()-1,1).get_max());
+                Max M = new Max(att_field.get_dice_number()-1,1);
+                def_field.set_dice_number(M.get_max());
                 
                 def_field.set_owner(att_field.get_owner());
             }
             att_field.set_dice_number(1);
         }
+        else{
+            infor = new AttackInformations(-1,-1,false);
+        }
 
-        return AttackInformations(-1,-1,false);
+        return infor;
     }
 
     public ArrayList<Field> get_fields(){

server/game-logic/Manager/Test.java

@@ -0,0 +1,16 @@
+import Manager.GameManager;
+import Player.Player;
+
+public class Test {
+    public static void main(String[] args){
+        GameManager gm = new GameManager();
+        gm.add_player("Sebastian");
+        gm.add_player("Lars");
+        gm.add_player("Nils");
+        gm.add_player("Felix");
+
+        for(Player current:gm.get_players()){
+            System.out.println(current);
+        }
+    }   
+}

server/game-logic/Test.java

@@ -1,8 +1,15 @@
-import GameManager.*;
+import Manager.GameManager;
 
 public class Test {
     public static void main(String[] args){
-        Random rand_num = new Random();
-        System.out.println(Integer.toString(rand_num.nextInt(2)));
+        GameManager gm = new GameManager();
+        gm.add_player("Sebastian");
+        gm.add_player("Lars");
+        gm.add_player("Nils");
+        gm.add_player("Felix");
+
+        for(Player current:gm.get_players()){
+            System.out.println(current);
+        }
     }   
 }