My FXML page is not loading, I cannot figure out why - javafx

Question

I am having problems figuring out why a page I am trying to load with my JFX FXML loader the page does not load..
With regards to my my FXML load class, my java code complies, but when I execute the code the "More Details page does not load and display when I click on the "More Details" button...here is the code segment that loads the "More Details" page...
// Now set up the stage and place the "post_details_update" on it.
Stage unilink_home_stage = (Stage) btnl_posting_more_details.getScene().getWindow();
unilink_home_stage.close();
// This closes the Login dialog
// now call the post_details_update.fxml
try {
//Parent post_details = FXMLLoader.load( getClass().getResource("/unilink_home/post_details/post_details_update.fxml"));
Parent post_details = FXMLLoader.load( getClass().getResource("/view/unilink_home/post_details/post_details_update.fxml"));
// Note: the path is not relative to the package that this file is in
// but the CLASSPATH from the src/
Stage post_details_stage = new Stage();
post_details_stage.setTitle("Welcome to UniLink");
post_details_stage.setScene(new Scene(post_details));
post_details_stage.show();
} //close the try block
catch(Exception e)
{
//System.out.print(e);
//e.printStackTrace();
System.out.println( e.getMessage() );
}// close the catch block
And the folder structure is...
and the FXML page is.... "post_details_update.fxml":
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.ListView?>
<?import javafx.scene.control.ToolBar?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.layout.VBox?>
<AnchorPane
fx:id="post_details"
xmlns:fx="http://javafx.com/fxml/1"
xmlns="http://javafx.com/javafx/11.0.1"
fx:controller="controller/unilink_home/post/details/unilink_home_post_detailsController"
>
<children>
<VBox prefHeight="401.0" prefWidth="850.0">
<children>
<ToolBar prefHeight="40.0" prefWidth="850.0">
<items>
<Button mnemonicParsing="false" text="Back to Main Window" />
<Label text="Review Post Details">
<padding>
<Insets left="250.0" />
</padding>
</Label>
</items>
</ToolBar>
<GridPane prefHeight="183.0" prefWidth="849.0">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" maxWidth="474.0" minWidth="10.0" prefWidth="215.0" />
<ColumnConstraints hgrow="SOMETIMES" maxWidth="541.0" minWidth="10.0" prefWidth="101.0" />
<ColumnConstraints hgrow="SOMETIMES" maxWidth="541.0" minWidth="10.0" prefWidth="534.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints maxHeight="144.0" minHeight="10.0" prefHeight="144.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="71.0" minHeight="10.0" prefHeight="39.0" vgrow="SOMETIMES" />
</rowConstraints>
<children>
<ImageView fitHeight="135.0" fitWidth="222.0" pickOnBounds="true" preserveRatio="true">
<GridPane.margin>
<Insets left="50.0" />
</GridPane.margin>
<image>
<Image url="#../../../../images/under_construction.png" />
</image>
</ImageView>
<GridPane prefHeight="131.0" prefWidth="277.0" GridPane.columnIndex="1">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
</rowConstraints>
<children>
<Label text="Post ID:" />
<Label layoutX="10.0" layoutY="25.0" text="Title:" GridPane.rowIndex="1" />
<Label layoutX="10.0" layoutY="72.0" text="Description:" GridPane.rowIndex="2" />
<Label layoutX="10.0" layoutY="89.0" text="Creator:" GridPane.rowIndex="3" />
<Label layoutX="10.0" layoutY="99.0" text="Date Created:" GridPane.rowIndex="4" />
<Label layoutX="10.0" layoutY="105.0" text="Status:" GridPane.rowIndex="5" />
</children>
</GridPane>
<GridPane layoutX="225.0" layoutY="10.0" prefHeight="131.0" prefWidth="277.0" GridPane.columnIndex="2">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints maxHeight="47.0" minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="46.0" minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="46.0" minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
</rowConstraints>
</GridPane>
<Button mnemonicParsing="false" text="Upload Image" GridPane.rowIndex="1">
<GridPane.margin>
<Insets left="70.0" />
</GridPane.margin>
</Button>
<Button mnemonicParsing="false" text="Close Post" GridPane.columnIndex="2" GridPane.rowIndex="1">
<GridPane.margin>
<Insets left="20.0" />
</GridPane.margin>
</Button>
<Button mnemonicParsing="false" text="Delete Post" GridPane.columnIndex="2" GridPane.rowIndex="1">
<GridPane.margin>
<Insets left="180.0" />
</GridPane.margin>
</Button>
<Button mnemonicParsing="false" text="Save" GridPane.columnIndex="2" GridPane.rowIndex="1">
<GridPane.margin>
<Insets left="350.0" />
</GridPane.margin>
</Button>
</children>
</GridPane>
<ListView prefHeight="200.0" prefWidth="200.0" />
</children>
</VBox>
</children>
</AnchorPane>
And the "unilink_home_post_detailsController.java" is just a shell at this stage...
package controller.unilink_home.post.details;
import javafx.fxml.FXML;
import javafx.scene.layout.AnchorPane;
import model.connectionTest;
import javafx.scene.control.MenuItem;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ChoiceBox;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
//import javafx.event.Event;
//Import the classes for database query
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import model.table_setup_view_postings;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.Initializable;
import javafx.scene.control.ListCell;
import javafx.scene.control.ListView;
import javafx.util.Callback;
import java.net.URL;
import java.util.ResourceBundle;
import model.posting;
public class unilink_home_post_detailsController implements Initializable
{
//database connection related variables,
private String query;
//This is the SQL query string
PreparedStatement ps;
//PreparedStatement ps2;
// This is the prepared statement for the SQL query
private Connection db_connect;
// this is the database connection string for SQL query results
final String DB_NAME = "testDB";
// This is the database name
#FXML // fx:id="post_details"
private AnchorPane post_details; // Value injected by FXMLLoader
//===================================================================================================================
/*
* This method is the class constructor and sets up the controller.
*/
public void unilink_home_post_detailsController()
{
}// close public void unilink_home_post_detailsController()
//===================================================================================================================
/*
* This method will initialiise the UI
*/
//#FXML
#Override
public void initialize(URL location, ResourceBundle resources)
{
}// close public void initialize(URL location, ResourceBundle resources)
}// close public class unilink_home_post_detailsController
With this:
1. The code will compile.
2. When I click the button "More Details"... nothing happens and I am also challenged how I can debug it because in Eclipse with Java JFX the step in/over buttons are greyed out, and it is not showing the variables so I can see the state of these vraibles?
Can anyone help, as I am somewhat new to JFX, and I have read that the FXML loader can be finnicky...
Sincerely.

Answer 1

I found the problem was in the path that I used to point to the controller... somehow I had "/" instead of "." when I made the change it worked. Thank you to those whoresponded.