JavaFX Location is not set error message

Question

I have problem when trying to close current scene and open up another scene when menuItem is selected  My main stage is coded as below   public void start Stage primaryStage  throws Exception       primaryStage setTitle  Shop Management        FXMLLoader myLoader   new FXMLLoader getClass   getResource  cartHomePage fxml          Pane myPane    Pane  myLoader load         CartHomePageUI controller    CartHomePageUI  myLoader getController         controller setPrevStage primaryStage       Scene myScene   new Scene myPane       primaryStage setScene myScene       primaryStage show        When the program is executed  it will go to the cartHomePage fxml  From there  I can select to go to create product or create category when the menu item is selected  Here is my action event   Stage prevStage   public void setPrevStage Stage stage        this prevStage   stage      public void gotoCreateCategory ActionEvent event  throws IOException     Stage stage   new Stage        stage setTitle  Shop Management        FXMLLoader myLoader   new FXMLLoader getClass   getResource  createCategory fxml         Pane myPane    Pane  myLoader load                    Scene scene   new Scene myPane       stage setScene scene       prevStage close        setPrevStage stage       stage show                Method to change scene when menu item create product is on click  FXML public void gotoCreateProduct ActionEvent event  throws IOException      Stage stage   new Stage        stage setTitle  Shop Management        FXMLLoader myLoader   new FXMLLoader getClass   getResource  creatProduct fxml         Pane myPane    Pane  myLoader load                    Scene scene   new Scene myPane       stage setScene scene       prevStage close        setPrevStage stage       stage show              However  I can only switch the stage once  For example  my default page is cartHomePage fxml  When I run the program  first I go to create product stage  After that  I cannot go to anywhere any more  The error message is   java lang IllegalStateException  Location is not set  and Null Pointer Exception   I did set the stage after I close it and pass it around  I wonder which part went wrong   Thanks in advance

User · Answer

This is often not getting the location path correct   It is important to realize that the path starts from the current package which the code resides in and not the root of the project   As long as you get this relative path correct  you should be able to steer clear of this error in this case

User · Answer

I converted a simple NetBeans 8 Java FXML application to the Maven-driven one  Then I got problems  because the getResource   methods weren t able to find the  fxml files  In mine original application the fxmls were scattered through the package tree - each beside its controller class file   After I made Clean and build in NetBeans  I checked the result  jar in the target folder - the  jar didn t contain any fxml at all  All the fxmls were strangely disappeared   Then I put all fxmls into the resources fxml folder and set the getResource method parameters accordingly  for example  FXMLLoader App class getClassLoader   getResource  fxml ObjOverview fxml     In this case everything went OK  The fxml folder appeared int the  jar s root and it contained all my fxmls  The program was working as expected

User · Answer

I had the same problem  It s a simple problem of not specifying the right path   Right click on the on your  fxml file and select properties  for those using eclipse won t differ that much for another IDE  and then copy the copy the location starting from  packagename till the end and that should solve the problem

User · Answer

I was getting this exception and the  solution  I found was through Netbeans IDE  simply     Right-click -   Clean and Build  Run project again   I don t know WHY this worked  but it did

User · Answer

I had faced he similar problem however it got resolved once i renamed the file   so i would suggest that you should       Just rename the file

User · Answer

That happened to me an i found the solution  If u build your project with your  fxml files in different packages from the class that has the launch line   Parent root   FXMLLoader load getClass   getResource  filenamehere fxml      and use a relative path your windows except from the first one wont launch when your run the jar  To keep it short place the  fxml file in the same package with the class that launches it and set the path like this   filenamehere fxml   and it should work fine

User · Answer

I had the same problem  I changed the FXML name to the FXML file in the controller class and the problem was solved

User · Answer

I mean something like this   FXMLLoader myLoader   null  Scene myScene   null  Stage prevStage   null   public void start Stage primaryStage  throws Exception     primaryStage setTitle  Shop Management      myLoader   new FXMLLoader getClass   getResource  cartHomePage fxml       Pane myPane    Pane  myLoader load      CartHomePageUI controller    CartHomePageUI  myLoader getController      controller setPrevStage primaryStage     myScene   new Scene myPane     primaryStage setScene myScene     primaryStage show        After that  public void setPrevStage Stage stage       this prevStage   stage     public void gotoCreateCategory ActionEvent event  throws IOException       Stage stage   new Stage        stage setTitle  Shop Management        myLoader   new FXMLLoader getClass   getResource  createCategory fxml         Pane myPane    Pane  myLoader load                    Scene scene   new Scene myPane       stage setScene scene      prevStage close    I don t think you need this  closing it will set preStage to null   put a breakpoint after this to confirm it     setPrevStage stage       stage show                Method to change scene when menu item create product is on click  FXML public void gotoCreateProduct ActionEvent event  throws IOException       Stage stage   new Stage        stage setTitle  Shop Management        myLoader   new FXMLLoader getClass   getResource  creatProduct fxml         Pane myPane    Pane  myLoader load                    Scene scene   new Scene myPane       stage setScene scene      prevStage close    I don t think you need this  closing it will set preStage to null put a breakpoint after this to confirm it     setPrevStage stage       stage show              Try it and let me know please

User · Answer

I had the same problem   after a few minutes  i figured it that i was trying the load the file fxml from wrong location   FXMLLoader fxmlLoader   new FXMLLoader getClass   getResource    wrong-path  abc fxml     fxmlLoader setClassLoader getClass   getClassLoader     fxmlLoader setRoot this   fxmlLoader setController this   fxmlLoader load

User · Answer

In my case the reason for the error was an runtime error in my corresponding java class  I fixed it and all was ok  My tip  don t search for an  location not set

User · Answer

mine was strange    IntelliJ specific quirk   I looked at my output classes and there was a folder   x y z  instead of   x y z  but if you have certain options set in IntelliJ  in the navigator they will both look like x y z  so check your output folder if you re scratching your head

User · Answer

I had this problem and found this post   My issue was just a file name issue   FXMLLoader getClass   getResource   com companyname reports     report getClass   getCanonicalName   substring 18  replaceAll  Controller           fxml      Parent root    Parent  loader load      I have an xml that this is all coming from and I have made sure that my class is the same as the fxml file less the word controller   I messed up the substring so the path was wrong   sure enough after I fixed the file name it worked   To make a long story short I think that the problem is either the filename is named improperly or the path is wrong   ADDITION  I have since moved to a Maven Project  The non Maven way is to have everything inside of your project path  The Maven way which was listed in the answer below was a bit frustrating at the start but I made a change to my code as follows   FXMLLoader loader   new FXMLLoader ReportMenu this getClass   getResource   fxml     report getClass   getCanonicalName   substring 18  replaceAll  Controller           fxml

User · Answer

I ve stumbled upon the same problem  Program was running great from Eclipse via  Run  button  but NOT from runnable JAR which I d exported before  My solution was   1  Move Main class to default package  2  Set other path for Eclipse  and other while running from the JAR file     paste this into Main java   public static final String sourcePath   isProgramRunnedFromJar      src         public static boolean isProgramRunnedFromJar         File x   getCurrentJarFileLocation        if x getAbsolutePath   contains  target  File separator  classes             return false        else           return true          public static File getCurrentJarFileLocation             try               return new File Main class getProtectionDomain   getCodeSource   getLocation   toURI   getPath               catch URISyntaxException e               e printStackTrace                return null                And after that in start method you have to load files like this   FXMLLoader loader   new FXMLLoader getClass   getResource sourcePath   MainScene fxml       It works for me in Eclipse Mars with e fx clipse plugin

User · Answer

The answer below by CsPeitch and others is on the right track  Just make sure that the fxml file is being copied over to your class output target  or the runtime will not see it  Check the generated class file directory and see if the fxml is there

User · Answer

FXMLLoader fxmlLoader   new FXMLLoader getClass   getResource     view Main fxml        in my case i just remove      FXMLLoader fxmlLoader   new FXMLLoader getClass   getResource   view Main fxml

User · Answer

I think problem is either incorrect layout name or invalid layout file path    for IntelliJ  you can create resource directory and place layout files there   FXMLLoader loader   new FXMLLoader    loader setLocation getClass   getResource   sample fxml     rootLayout   loader load

User · Answer

I know this is a late answer  but I hope to help anyone else who has this problem  I was getting the same error  and found that I had to insert a   in front of my file path  The corrected function call would then be   FXMLLoader myLoader   new FXMLLoader getClass   getResource   createCategory fxml

User · Answer

I tried a fast and simple thing   I have two packages -  app gui and app login  In my login class I use the mainview fxml from app gui so I did this in the login fxml  FXMLLoader fxmlLoader   new FXMLLoader getClass   getResource     gui MainView fxml       And it works

User · Answer

This worked for me well    public static void main String   args            launch args               Override     public void start Stage primaryStage  throws IOException            FXMLLoader loader   new FXMLLoader getClass   getResource  quot  fxml TestDataGenerator fxml quot             loader setClassLoader getClass   getClassLoader             Parent root   loader load            primaryStage setScene new Scene root            primaryStage show

User · Answer

For Intellij users  my issue was that the directory where I had my fxml files  src main resources   was not marked as a  Resources  directory    Open up the module project settings go to the sources tab and ensure that Intellij knows that the directory contains project resource files

User · Answer

I ve had the same issue in my JavaFX Application  Even more weird  In my Windows developement environment everything worked fine with the fxml loader  But when I executed the exact same code on my Debian maschine  I got similar errors with  location not set    I read all answers here  but none seemed to really  solve  the problem  My solution was easy and I hope it helps some of you   Maybe Java gets confused  by the getClass   method  If something runs in different threads or your class implements any interfaces  it may come to the point  that a different class than yours is returned by the getClass   method  In this case  your relative path to creatProduct fxml will be wrong  because your  are  not in the path you think you are     So to be on the save side  Be more specific and try use the static class field on your Class  Note the YourClassHere class     FXML public void gotoCreateProduct ActionEvent event  throws IOException      Stage stage   new Stage        stage setTitle  Shop Management        FXMLLoader myLoader   new FXMLLoader YourClassHere class getResource  creatProduct fxml         Pane myPane    Pane  myLoader load                    Scene scene   new Scene myPane       stage setScene scene       prevStage close        setPrevStage stage       stage show              After realizing this  I will ALWAYS do it like this  Hope that helps

[java] JavaFX Location is not set error message

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