Develop Reference

How to make Java save my background image in extracted, compiled java program?

When I try to run my extracted/compiled java program I can see pictures cause they are stored on my PC and addressed in the code from my PC. But when I try the same program on another PC, pictures/backgrounds are gone.
How to store pictures into java code while I'm calling them from a disk into ImageView so they are viewable on other systems too ?
I am using JavaFX and FXML, CSS.

You can bundle your images with java program using two ways:
1) put them inside your jar - create a package named eg. "images" and add the images there, then load it using
BufferedImage img = ImageIO.read(getClass().getResourceAsStream("/images/image.jpg"));
2) put them in to the same folder as your jar and load them with:
BufferedImage img = ImageIO.read(new File("image.jpg"));
For you the best way is probably the #1 because youll get just one jar - it is easier to copy such jar and harder to tamper the images.

I've done it like this. Thanks!
#Override
public void start(Stage stage) throws Exception
{
Parent root = FXMLLoader.load(getClass().getResource("/grafika.fxml"));
Scene scene = new Scene(root);
scene.getStylesheets().add("/application.css");
Image picture1 = new Image("/kava.jpg");
ImageView slika1 = new ImageView(picture1);
slika1.setImage(picture1);
stage.setScene(scene);
stage.setMaxHeight(530);
stage.setMaxWidth(800);
stage.setResizable(false);
stage.show();
}

How can I make a full screen java application?

I have an image viewer appplication. It works perfectly, but I'd like to make a full screen mode for it. It's an FXML project in Netbeans so, the main java is a separated file, therefore I cannot use this:
stage.setFullScreen(true);
because I can't reach the stage from my main .java file.
So I have a file, its name is imageViewer.java, it has this:
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("image_view.fxml"));
Scene scene = new Scene(root);
String css = this.getClass().getResource("style.css").toExternalForm();
scene.getStylesheets().add(css);
stage.setMinHeight(640);
stage.setMinWidth(960);
stage.setScene(scene);
stage.show();
}
and I have another file, it has fxml implements, and the ActionEvent void methods, you know, click the button, next picture etc...
The mentioned method (start method above) it's a method, therefore I can't return the stage. I have to reach the stage from image_viewController.java (the main java), what includes the other methods, functions and FXML implements etc...
I'd like to do this:
public void fullScreen(ActionEvent e) {
stage.setFullScreen(true);
}
But I can't reach the stage from another .java file. This is the first problem. And the second problem.
How can I make position absolute my panes, Vboxes etc like in html??? If my ImageView (what contains my image) get the full width and height, pulls down my HBox (what includes the buttons). If HBox were in absolute position, it wouldn't happened this, would it?
And the final problem, how can I make that, my HBox doesn't appear, just triggered by a hover effect. Is it possible with a separated css file? As I know, it is possible to make with FXML files.
Thanks for the answers!

Appliacation icon on javafx [duplicate]

This question already has answers here:
JavaFX Application Icon
(17 answers)
Closed 5 years ago.
I have tried the
stage.getIcons().add(new Image("attuncore.jpg"));
But I don't know what is going wrong ..
Please help. Thanks in advance.

Full program for starters :) This program set Stack Overflow Icon.
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.image.Image;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class StackoverflowIcon extends Application {
#Override
public void start(Stage stage) {
StackPane root = new StackPane();
// set icon
stage.getIcons().add(new Image("/path/to/stackoverflow.jpg"));
stage.setTitle("Wow!! Stackoverflow Icon");
stage.setScene(new Scene(root, 300, 250));
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Output Screnshot
Updated for JavaFX 8
No need to change the code. It still works fine. Tested and verified in Java 1.8(1.8.0_45). Path can be set to local or remote both are supported.
stage.getIcons().add(new Image("/path/to/javaicon.png"));
OR
stage.getIcons().add(new Image("https://example.com/javaicon.png"));
Hope it helps. Thanks!!

You can load the image from the classpath like this:
new Image(XYZ.class.getResourceAsStream("/xyz.png"))
where XYZ is some classname (maybe the one you're loading the image from) and xyz.png is the name of your image file, put in a directory (or JAR file) included in your classpath.
If you like to put the image next to the source file, you have to omit the / character. Your IDE needs to be configured to copy ressources (like *.png) from src to bin directory, then. But this is supposed to be the standard behaviour.

For those who had a problem with:
Invalid URL: Invalid URL or resource not found
The best solution is to make new package i.e image.icons and move there your .png image. Then you just need to write:
Image image = new Image("/image/icons/list.png");
primaryStage.getIcons().add(image);
I hope this helps somebody!

Does your image have correct size? Javadoc states:
public final ObservableList getIcons()
Gets the icon images to be used in the window decorations and when
minimized. The images should be different sizes of the same image and
the best size will be chosen, eg. 16x16, 32,32.

The solution i found by setting the properties of standalone working directory to package where my main and image is placed.

Dont forget to do the import
import javafx.scene.image.Image;
Image icon = new Image(getClass().getResourceAsStream("myicon.png"));
stage.getIcons().add(icon);
Replace "myicon.png" with your icon. In this case it's in the same folder as your java class.

Set application icon for FileChooser in javaFX

After I start a FileChooser window in my javaFX application in windows the application icon in the taskbar shows a java icon and not the icon of the main window. Is there a possibility to select an application icon for a FileChooser instance?
Thanks for your answeres!

It is possible to do so, but apparently only when you have a visible parent stage.
Provided that stage in the following example is visible, you can do this:
stage.getIcons().add(new Image("http://i.imgur.com/1M3UaZy.png"));
FileChooser fileChooser = new FileChooser();
File result = fileChooser.showSaveDialog(stage);
This opens the file chooser as a child of the given stage, which has the given icon.
I stepped through the JavaFX source code with a debugger (Oracle Java 8u72 on Windows x64), and there is not single point in the Java code where the icon could be set. The parent window handle is passed into a native method, where it then the icon probably gets resolved somewhere in the Win32 windowing code.

This is an ugly hack based on RAnders00 answer. It calls show before the showSaveDialog call, plus it calls stage.initStyle(StageStyle.UNDECORATED) so we don't get an unwanted window.
In addition, it only worked using resource icons, and not the url example icon.
// For me it only worked with resource icons, nor url example icon
stage.getIcons().add(new Image(getClass().getClassLoader().getResourceAsStream("icon.png")));
FileChooser fileChooser = new FileChooser();
// App icon show hack
stage.initStyle(StageStyle.UNDECORATED); // Remove unwanted window (no buttons no window)
stage.show();
File result = fileChooser.showSaveDialog(stage);
// Close app icon
stage.hide();
Only tested on windows 10.

The issue with the above solution is, that it won't work out of the box when you are using FXML-controllers. That troubled me for a while, but finally I found a solution for that, which I'd like to share with you.
First you need to assign you topmost pane wihtin your fxml-file an id, for instance:
<AnchorPane prefHeight="563.0" prefWidth="442.0" scaleShape="false" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:id="primaryStageAnchorPane" fx:controller="application.MyController">
Now you can use this id in your controller to create the link:
#FXML
private AnchorPane primaryStageAnchorPane;
That whas the hard part. All you need to do now is to get the window-attributes of the linked pane (which are the ones from the primary stage of your application-file):
Stage stage = (Stage) primaryStageAnchorPane.getScene().getWindow();
FileChooser fileChooser = new FileChooser();
File tempFolder = fileChooser.showOpenDialog(stage);
This will overtake the main application's icon for your filechooser-window. As a side-effect your file-chooser won't appear as a seperate item in the task-bar anymore.
Worked for me, hopes it helps somebody out there :)

Frame image is not changing while creating installer in windows swt application

I am creating an windows desktop swt application.
I need to change the frame icon, for that I used
frame.setIconImage((new ImageIcon("C:\\Documents and Settings\\arjuns\\Desktop\\logo1 copy.png")).getImage());
The icon is displaying when I manually run the code from eclipse, but when I create an installer using Install4j the icon is not appearing.
Can anyone please help me.

URL url = ClassLoader.getSystemResource("ressources/logo.png");
Toolkit kit = Toolkit.getDefaultToolkit();
Image img = kit.createImage(url);
setIconImage(img);
This is similar to the previous answer, but I need to add a bit of information.
You can still use a direct path to your image (C:/User/logo.png) BUT imagine you give your program to someone else, he wont have the image in that specific path.
So I recemmend you insert it in your project like so:
(I usualy do a sperate package for any ressources).
so it will become ressources/logo.png and it will work for anybody opening your project.

import java.awt.*;
import javax.swing.*;
class set extends JFrame
{
set()
{
setSize(100,100);
setVisible(true);
setIconImage(new ImageIcon("navbit-home.png").getImage());
}
public static void main (String[] args) {
new set();
}
}
please set appropriate path.like C:/Documents and Settings/arjuns/Desktop/logo1copy.png

The image should be available in the JAR file you create. Then use getResource() to get the image from the jar file.
For example,
URL resource = this.getClass().getResource("resources/logo.png");
frame.setIconImage(new ImageIcon(resource).getImage());
Here the logo.png is located under 'resources' folder of the class file where this code is executed.