error on running my javafxml application with Derby database - javafx

Question

I'm new in Java. I am writing a JavaFXML application in Netbeans IDE 8.2 that includes a class for connecting to a Derby database (DatabaseHandler.java) that first create a database for me. But when i run the program, this database is not created in my project. Does any code is required to added or modified? Here is my codes. Please help me.
my program has 2 packages: -library.assistant.database -library.assistant.ui.addbook
Codes for FXMLDocumentCntroller.java
package library.assistant.ui.addbook;
import com.jfoenix.controls.JFXButton;
import com.jfoenix.controls.JFXTextField;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import library.assistant.database.DatabaseHandler;
/**
* FXML Controller class
*
* #author pc
*/
public class FXMLDocumentController implements Initializable {
#FXML
private JFXTextField title;
#FXML
private JFXTextField id;
#FXML
private JFXTextField author;
#FXML
private JFXTextField publisher;
#FXML
private JFXButton saveButton;
#FXML
private JFXButton cancelButton;
DatabaseHandler databaseHandler;
/**
* Initializes the controller class.
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
databaseHandler = new DatabaseHandler();
}
#FXML
private void addBook(ActionEvent event) {
}
#FXML
private void cancel(ActionEvent event) {
}
}
Codes for DatabaseHandler.java
package library.assistant.database;
private static DatabaseHandler handler;
private static final String DB_URL = "jdbc:derby:database;create=true";
private static Connection conn = null;
private static Statement stmt = null;
public DatabaseHandler() {
createConnection();
setupBookTable();
}
void createConnection() {
try {
Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
conn = DriverManager.getConnection(DB_URL);
} catch (Exception e) {
e.printStackTrace();
}
}
void setupBookTable() {
String Table_Name = "Book";
try {
stmt = conn.createStatement();
DatabaseMetaData dbm = conn.getMetaData();
ResultSet tables = dbm.getTables(null, null, Table_Name.toUpperCase(), null);
if (tables.next()) {
System.out.println("table" + Table_Name + "already exists. Ready for go!");
} else {
stmt.execute("CREATE TABLE " + Table_Name + "("
+ " id varchar(200) primary key,\n"
+ " title varchar(200),\n"
+ " author varchar(200),\n"
+ " publisher varchar(100),\n"
+ " isAvailable boolaen default true"
+ " )");
}
} catch (SQLException e) {
System.err.println(e.getMessage() + " ... setupDatabase");
} finally {
}
}
}
Codes for LibraryAssistant.java
package library.assistant.ui.addbook;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
*
* #author pc
*/
public class LibraryAssistant extends Application {
#Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
Here is my fxml file
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXButton?>
<?import com.jfoenix.controls.JFXTextField?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<AnchorPane id="AnchorPane" prefHeight="255.0" prefWidth="368.0"
xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1"
fx:controller="library.assistant.ui.addbook.FXMLDocumentController">
<children>
<VBox prefHeight="363.0" prefWidth="368.0" AnchorPane.bottomAnchor="0.0"
AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0"
AnchorPane.topAnchor="0.0">
<children>
<JFXTextField fx:id="title" labelFloat="true" promptText="Book Title">
<VBox.margin>
<Insets left="10.0" right="10.0" top="20.0" />
</VBox.margin>
</JFXTextField>
<JFXTextField fx:id="id" labelFloat="true" layoutX="20.0"
layoutY="30.0" promptText="Book ID">
<VBox.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="20.0" />
</VBox.margin>
</JFXTextField>
<JFXTextField fx:id="author" labelFloat="true" layoutX="20.0"
layoutY="30.0" promptText="Book Author">
<VBox.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</VBox.margin>
</JFXTextField>
<JFXTextField fx:id="publisher" labelFloat="true" layoutX="10.0"
layoutY="55.0" promptText="Publisher">
<VBox.margin>
<Insets bottom="10.0" left="10.0" right="10.0" top="10.0" />
</VBox.margin>
</JFXTextField>
<HBox prefHeight="58.0" prefWidth="368.0">
<children>
<JFXButton fx:id="saveButton" onAction="#addBook"
prefHeight="58.0" prefWidth="200.0" stylesheets="#addbook.css" text="Save"
/>
<JFXButton fx:id="cancelButton" layoutX="10.0" layoutY="10.0"
onAction="#cancel" prefHeight="58.0" prefWidth="200.0"
stylesheets="#addbook.css" text="Cancel" />
</children>
</HBox>
</children>
</VBox>
</children>
</AnchorPane>