Java fx event handler - javafx

Question

Why my code is not running? How am I going to display an image on the interface when clicked "add image"?
import javafx.stage.Stage;
import javafx.scene.*;
import javafx.application.Application;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
public class GUIProject extends Application{
/**
* #param args the command line arguments
*/
public void start (Stage stage) throws Exception
{
Pane bPane = new Pane();
Button btOK = new Button("OK");
OKAction OKact = new OKAction();
btOK.setOnAction(OKact);
Button addImage = new Button("Add Image");
isAdd addimage = new isAdd();
addImage.setOnAction(addimage);
//bPane.getChildren().add(btOK);
bPane.getChildren().add(addImage);
Scene scene = new Scene(bPane);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
// TODO code application logic here
Application.launch(args);
}
}
import java.io.FileInputStream;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.StackPane;
public class Pane extends StackPane {
public void addImage() throws Exception
{
Image logo = new Image(new FileInputStream("logo.jpg"));
ImageView logoView = new ImageView(logo);
this.getChildren().add(logoView);
}
}
import java.io.FileInputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
class isAdd implements EventHandler<ActionEvent>{
public void handle(ActionEvent event)
{
try {
Pane.displayImage();
}
catch (Exception ex) {
System.out.println("Error");;
}
}
}
It keep showing static method cannot with non-static method, how can I solve that?
Is there any website can learn javafx event handler?