Thread: Makes no sense...

package HW.JavaFXUI;
 
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.Ellipse;;
 
public class LabelWithGraphic extends Application {
 
	public static void main(String[] args) {
		launch(args);
	}
 
	@Override // Override the start method in the application class.
	public void start(Stage primaryStage) throws Exception {
		ImageView us = new ImageView(new Image("image/us.gif"));
		Label lb1 = new Label("US\n50 States", us);
		lb1.setStyle("-fx-border-color: green; -fx-border-widht: 2");
		lb1.setContentDisplay(ContentDisplay.BOTTOM);
		lb1.setTextFill(Color.RED);
 
		Label lb2 = new Label("Circle", new Circle(50, 50, 25));
		lb2.setContentDisplay(ContentDisplay.TOP);
		lb2.setTextFill(Color.ORANGE);
 
		Label lb3 = new Label("Rectangle", new Rectangle(10, 10, 50, 25));
		lb3.setContentDisplay(ContentDisplay.RIGHT);
 
		Label lb4 = new Label("Ellipse", new Ellipse(50, 50, 50, 25));
		lb4.setContentDisplay(ContentDisplay.LEFT);
 
		Ellipse ellipse = new Ellipse(50, 50, 50, 25);
		ellipse.setStroke(Color.GREEN);
		ellipse.setFill(Color.WHITE);
		StackPane stackpane = new StackPane();
		stackpane.getChildren().addAll(ellipse, new Label("JavaFX"));
		Label lb5 = new Label("A pane inside a label", stackpane);
		lb5.setContentDisplay(ContentDisplay.BOTTOM);
 
		HBox pane = new HBox(20);
		pane.getChildren().addAll(lb1, lb2, lb3, lb4, lb4);
 
		// Create a scene and place it in the stage.
 
		Scene scene = new Scene(pane, 450, 150);
		primaryStage.setTitle("LabelWithGraphic"); // Set the stage title.
		primaryStage.setScene(scene); // Place the scene in the stage.
		primaryStage.show();
 
	}
 
}

I get an execution error. Check to make sure you have not missed the execution error.

Honestly... i cannot seem to find the problem here.

Originally Posted by Norm

I get an execution error. Check to make sure you have not missed the execution error.

Exception in Application start method
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
	at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
	at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$159(LauncherImpl.java:182)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid URL: Invalid URL or resource not found
	at javafx.scene.image.Image.validateUrl(Image.java:1118)
	at javafx.scene.image.Image.<init>(Image.java:620)
	at HW.JavaFXUI.LabelWithGraphic.start(LabelWithGraphic.java:25)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$166(LauncherImpl.java:863)
	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$179(PlatformImpl.java:326)
	at com.sun.javafx.application.PlatformImpl.lambda$null$177(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$178(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
	... 1 more
Caused by: java.lang.IllegalArgumentException: Invalid URL or resource not found
	at javafx.scene.image.Image.validateUrl(Image.java:1110)
	... 11 more
Exception running application HW.JavaFXUI.LabelWithGraphic

This is the result. What i should be getting is a window with 4 different shapes displayed. And yes, i do have javaFx lib.
And yes i tried to update everything that could be updated.

Caused by: java.lang.IllegalArgumentException: Invalid URL: Invalid URL or resource not found
at javafx.scene.image.Image.validateUrl(Image.java:11 18)
at javafx.scene.image.Image.<init>(Image.java:620)
at HW.JavaFXUI.LabelWithGraphic.start(LabelWithGraphic.java:25)

Scan through the text of the error message until you find a reference to a line in your code. This part of the message refers to line 25 and says there is a problem there with a URL. That line has a path to an image. Check that the image file is at that address.

Originally Posted by Norm

Scan through the text of the error message until you find a reference to a line in your code. This part of the message refers to line 25 and says there is a problem there with a URL. That line has a path to an image. Check that the image file is at that address.

Yeah i can see that but i cannot find the url problem. I have looked over all the lib and the code many times.
Mind you, this is all from a book but they never mentioned anything about the url or an image.
I do appreciate you helping me. PS: Doing this on my free time.

anything about the url or an image.

Look at the statement on line 25.
Where is the us.gif file? Is it in the image folder? Is the image folder in the current directory when the code is executed?

Originally Posted by Norm

Look at the statement on line 25.
Where is the us.gif file? Is it in the image folder? Is the image folder in the current directory when the code is executed?

I have my gif file within the package... it is laying right next to the class. I've never had a problem doing that before.

The program is coded to look in the image folder for the image file. And the image folder must be available to the java command when it executes (ie in the current directory where the java command is executed.

If i knew what image folder you were talking about then this would be done... not you're fault at all. Just i've not been able to anything as such. I even made a source folder for the image within the project.

what image folder

Look at the statement on line 25:

ImageView us = new ImageView(new Image("image/us.gif"));

the code refers to a file: us.gif in a folder named: image

Originally Posted by Norm

Look at the statement on line 25:
the code refers to a file: us.gif in a folder named: image

Yes. I have the gif within the same package as the class. So it should work, since i've done it before and it had been working before as well.
But it doesn't want to work. The "gif", which i changed to a png now, is laying next to the class.

ImageView us = new ImageView(new Image("us.png"));

Here is the code again :

package HW.JavaFXUI;
 
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Rectangle;
import javafx.scene.shape.Ellipse;;
 
public class LabelWithGraphic extends Application {
 
	public static void main(String[] args) {
		launch(args);
	}
 
	@Override // Override the start method in the application class.
	public void start(Stage primaryStage) throws Exception {
		ImageView us = new ImageView(new Image("us.png"));
		Label lb1 = new Label("US\n50 States", us);
		lb1.setStyle("-fx-border-color: green; -fx-border-widht: 2");
		lb1.setContentDisplay(ContentDisplay.BOTTOM);
		lb1.setTextFill(Color.RED);
 
		Label lb2 = new Label("Circle", new Circle(50, 50, 25));
		lb2.setContentDisplay(ContentDisplay.TOP);
		lb2.setTextFill(Color.ORANGE);
 
		Label lb3 = new Label("Rectangle", new Rectangle(10, 10, 50, 25));
		lb3.setContentDisplay(ContentDisplay.RIGHT);
 
		Label lb4 = new Label("Ellipse", new Ellipse(50, 50, 50, 25));
		lb4.setContentDisplay(ContentDisplay.LEFT);
 
		Ellipse ellipse = new Ellipse(50, 50, 50, 25);
		ellipse.setStroke(Color.GREEN);
		ellipse.setFill(Color.WHITE);
		StackPane stackpane = new StackPane();
		stackpane.getChildren().addAll(ellipse, new Label("JavaFX"));
		Label lb5 = new Label("A pane inside a label", stackpane);
		lb5.setContentDisplay(ContentDisplay.BOTTOM);
 
		HBox pane = new HBox(20);
		pane.getChildren().addAll(lb1, lb2, lb3, lb4, lb4, lb5, ellipse);
 
 
		// Create a scene and place it in the stage.
 
		Scene scene = new Scene(pane, 450, 150);
		primaryStage.setTitle("LabelWithGraphic"); // Set the stage title.
		primaryStage.setScene(scene); // Place the scene in the stage.
		primaryStage.show();
 
	}
 
}

it doesn't want to work

What error messages are shown?
Please copy the full text of the error message and paste it here. It has important info about the error.

Exception in Application start method
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
	at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at sun.launcher.LauncherHelper$FXHelper.main(Unknown Source)
Caused by: java.lang.RuntimeException: Exception in Application start method
	at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$159(LauncherImpl.java:182)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Invalid URL: Invalid URL or resource not found
	at javafx.scene.image.Image.validateUrl(Image.java:1118)
	at javafx.scene.image.Image.<init>(Image.java:620)
	at HW.JavaFXUI.LabelWithGraphic.start(LabelWithGraphic.java:25)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$166(LauncherImpl.java:863)
	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$179(PlatformImpl.java:326)
	at com.sun.javafx.application.PlatformImpl.lambda$null$177(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$178(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$152(WinApplication.java:177)
	... 1 more
Caused by: java.lang.IllegalArgumentException: Invalid URL or resource not found
	at javafx.scene.image.Image.validateUrl(Image.java:1110)
	... 11 more
Exception running application HW.JavaFXUI.LabelWithGraphic

Line 25 is the problem, but no problem is showing up in the code until execution.
Line 25 is this:

ImageView us = new ImageView(new Image("us.png"));

The program can not find the file. Make sure the correct file name is used and that the file is present.