In the opposite of its name, number is NOT a number...

src/main/java/ch/hepia/api/transport/Journey.java

@@ -11,7 +11,7 @@ public class Journey {
     private String name;
     private String category;
     private int categoryCode;
-    private int number;
+    private String number;
     private String operator;
     private String to;
     private List<Stop> passList;
@@ -28,7 +28,7 @@ public class Journey {
          * @throws ParseException
          */
         private EmptyJourney() throws ParseException {
-            super("", "", 0, 0, "", "",
+            super("", "", 0, "", "", "",
                     new ArrayList<>(), 0, 0);
         }
     }
@@ -45,7 +45,7 @@ public class Journey {
      * @param capacity1st number of seats inst class
      * @param capacity2nd number of seats in nd class
      */
-    private Journey(String name, String category, int categoryCode, int number, String operator, String to, List<Stop> passList, int capacity1st, int capacity2nd){
+    private Journey(String name, String category, int categoryCode, String number, String operator, String to, List<Stop> passList, int capacity1st, int capacity2nd){
         this.name = name;
         this.category = category;
         this.categoryCode = categoryCode;
@@ -125,7 +125,7 @@ public class Journey {
             String name = datas.isNull("name") ? "" : datas.getString("name");
             String category = datas.isNull("category") ? "" : datas.getString("category");
             int categoryCode = datas.isNull("categoryCode") ? 0 : datas.getInt("categoryCode");
-            int number = datas.isNull("number") ? 0 : datas.getInt("number");
+            String number = datas.isNull("number") ? "" : datas.getString("number");
             String operator = datas.isNull("operator") ? "" : datas.getString("operator");
 
             String to = datas.isNull("to") ? "" : datas.getString("to");