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Java Swing Icon wont show up [duplicate]

I tried this way, but it didnt changed?
ImageIcon icon = new ImageIcon("C:\\Documents and Settings\\Desktop\\favicon(1).ico");
frame.setIconImage(icon.getImage());

Better use a .png file; .ico is Windows specific. And better to not use a file, but a class resource (can be packed in the jar of the application).
URL iconURL = getClass().getResource("/some/package/favicon.png");
// iconURL is null when not found
ImageIcon icon = new ImageIcon(iconURL);
frame.setIconImage(icon.getImage());
Though you might even think of using setIconImages for the icon in several sizes.

Try putting your images in a separate folder outside of your src folder. Then, use ImageIO to load your images. It should look like this:
frame.setIconImage(ImageIO.read(new File("res/icon.png")));

Finally I found the main issue in setting the jframe icon. Here is my code. It is similar to other codes but here are few things to mind the game.
this.setIconImage(new ImageIcon(getClass().getResource("Icon.png")).getImage());
1) Put this code in jframe WindowOpened event
2) Put Image in main folder where all of your form and java files are created e.g.
src\ myproject\ myFrame.form
src\ myproject\ myFrame.java
src\ myproject\ OtherFrame.form
src\ myproject\ OtherFrame.java
src\ myproject\ Icon.png
3) And most important that name of file is case sensitive that is icon.png won't work but Icon.png.
this way your icon will be there even after finally building your project.

This works for me.
frame.setIconImage(Toolkit.getDefaultToolkit().getImage(".\\res\\icon.png"));
For the export jar file, you need to configure the build path to include the res folder and use the following codes.
URL url = Main.class.getResource("/icon.png");
frame.setIconImage(Toolkit.getDefaultToolkit().getImage(url));

Yon can try following way,
myFrame.setIconImage(Toolkit.getDefaultToolkit().getImage("Icon.png"));

Here is the code I use to set the Icon of a JFrame
import javax.imageio.ImageIO;
import java.io.File;
import java.io.IOException;
try{
setIconImage(ImageIO.read(new File("res/images/icons/appIcon_Black.png")));
}
catch (IOException e){
e.printStackTrace();
}

Just copy these few lines of code in your code and replace "imgURL" with Image(you want to set as jframe icon) location.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create the frame.
JFrame frame = new JFrame("A window");
//Set the frame icon to an image loaded from a file.
frame.setIconImage(new ImageIcon(imgURL).getImage());

I'm using the following utility class to set the icon for JFrame and JDialog instances:
import java.awt.*;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.util.Scanner;
public class WindowUtilities
{
public static void setIconImage(Window window)
{
window.setIconImage(Toolkit.getDefaultToolkit().getImage(WindowUtilities.class.getResource("/Icon.jpg")));
}
public static String resourceToString(String filePath) throws IOException, URISyntaxException
{
InputStream inputStream = WindowUtilities.class.getClassLoader().getResourceAsStream(filePath);
return toString(inputStream);
}
// http://stackoverflow.com/a/5445161/3764804
private static String toString(InputStream inputStream)
{
try (Scanner scanner = new Scanner(inputStream, "UTF-8").useDelimiter("\\A"))
{
return scanner.hasNext() ? scanner.next() : "";
}
}
}
So using this becomes as simple as calling
WindowUtilities.setIconImage(this);
somewhere inside your class extending a JFrame.
The Icon.jpg has to be located in myproject\src\main\resources when using Maven for instance.

I use Maven and have the structure of the project, which was created by entering the command:
mvn archetype:generate
The required file icon.png must be put in the src/main/resources folder of your maven project.
Then you can use the next lines inside your project:
ImageIcon img = new ImageIcon(getClass().getClassLoader().getResource("./icon.png"));
setIconImage(img.getImage());

My project code is as below:
private void setIcon() {
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/slip/images/cage_settings.png")));
}

frame.setIconImage(new ImageIcon(URL).getImage());
/*
frame is JFrame
setIcon method, set a new icon at your frame
new ImageIcon make a new instance of class (so you can get a new icon from the url that you give)
at last getImage returns the icon you need
it is a "fast" way to make an icon, for me it is helpful because it is one line of code
*/

public FaceDetection() {
initComponents();
//Adding Frame Icon
try {
this.setIconImage(ImageIO.read(new File("WASP.png")));
} catch (IOException ex) {
Logger.getLogger(FaceDetection.class.getName()).log(Level.SEVERE, null, ex);
}
}'
this works for me.

how to show images with a relative path on a JavaFX application?

I'm creating a JavaFX application that needs to show an image, my currently way to do that is this:
ImageView icon=new ImageView(new Image("file:///C:/Users/MMJon/eclipse-workspace/Pumaguia/src/vista/resources/rutas.png"));
i've tried to do it like this
ImageView icon=new ImageView(new Image(this.getClass().getResource("resources/rutas.png").toExternalForm()));
but it throws a Null Pointer exception. How can i do what i need?
Here's an image of the console
and here's an image of my project's structure
My main class is "pumaguia" and the class that shows the image is in "pestanas" package, and the folder that contains the image is "resources".
UPDATE:
I've tried to compile on ubuntu's command line and this was what i get. Hope it helps.

Going to assume you are using JDK 8 and above. The path must be relative and be preceded with the appropriate platform path separator.
Define an ImageProvider to ensure you handle the absence of the image correctly. Note that I use a class reference to establish the resource path.
public class ImageProvider {
private static ImageProvider imageSingleton;
private Image image = null;
private static final java.util.logging.Logger LOGGER = LogManager.getLogManager().getLogger("MyApp");
private ImageProvider(String imageStr) {
try {
image = new Image(ImageProvider.class.getResource(imageStr).toURI().toString());
} catch (URISyntaxException ex) {
LOGGER.log(Level.SEVERE, "Cannot fine image.", ex);
}
}
/**
* Returns an Image if possible.
* #param imageStr the relative path preceded by the appropriate platform path separator.
* #return
*/
public static Image getImage(String imageStr) {
return Optional.ofNullable(imageSingleton).orElseGet(() -> imageSingleton = new ImageProvider(imageStr)).image;
}
You can then use;
ImageProvider.getImage("/img/myImage.png")

Open a File in default File explorer and highlight it using JavaFX or plain Java

I wish to do what the title says.
Part Solution:
For example in Windows you can use the code below to open a file in the default explorer and highlight it.
(although it needs modification for files containing spaces):
/**
* Opens the file with the System default file explorer.
*
* #param path the path
*/
public static void openFileLocation(String path) {
if (InfoTool.osName.toLowerCase().contains("win")) {
try {
Runtime.getRuntime().exec("explorer.exe /select," + path);
} catch (IOException ex) {
Main.logger.log(Level.WARNING, ex.getMessage(), ex);
}
}
}
Useful Links:
Links which are similar but no way dublicates or not answered:
How to use java code to open Windows file explorer and highlight the specified file?
Open a folder in explorer using Java
How can I open the default system browser from a java fx application?
More explanation:
Is there a way to do it using JavaFX ?
If not at least i need a link or some way to make the app system
independence.I mean i don't know the default explorer for every OS
that the application is going to work , i need a link or help doing that.
Do i need to write a ton of code to do this?
Is out there any library for doing that?
Do Java9 support that?
Finally:
It is very strange that for so common things i can't find answers and libraries .
Example of highlighted or selected in Windows 10:

Windows
Runtime.getRuntime().exec("explorer /select, <file path>")
Linux
Runtime.getRuntime().exec("xdg-open <file path>");
MacOS
Runtime.getRuntime().exec("open -R <file path>");

Since Java 9 it's possible with the new method browseFileDirectory, so your method would state:
import java.awt.Desktop;
import java.io.File;
...
/**
* Opens the file with the System default file explorer.
*
* #param path the path
*/
public static void openFileLocation(String path) {
Desktop.getDesktop().browseFileDirectory(new File(path));
}
For more information, refer to the javadoc:
https://docs.oracle.com/javase/10/docs/api/java/awt/Desktop.html#browseFileDirectory(java.io.File)

The following is a partial answer showing you how to open the system folder you desire, but not how to highlight a specific file since I do not believe it is possible to highlight a file in a system folder, because that is probably a system OS function that cannot be accessed by Java.
This is written in Javafx code
In your Main class make a variable for Hostservices. Note that "yourFileLocation" is the address of the folder to the file, and SettsBtn is a button that exists somewhere which the user clicks to execute the code:
public class Main extends Application{
static HostServices Host; //<-- sort of a global variable
//some code here to make your GUI
public Main() {
//more code here to initialize things
}
public void start(Stage primaryStage) throws Exception {
//some code here to set the stage
//This code here opens the file explorer
SettsBtn.setOnMouseClicked(e-> {
Path partPath = Paths.get("yourFileLocation");
Host = getHostServices();
Host.showDocument(partPath.toUri().toString());
});
}
}
Note that you could directly open the file by making a string to the file location and the file name with its extension, such as:
Path partPath = Paths.get("yourFileLocation"+"\\"+"yourFileName.ext");

As of Java 17 the Desktop::browseFileDirectory method is still not supported on Windows 10 or later.
The historic reason is that Apple originally implemented these native Desktop integration features for Mac OS X in the com.apple.eawt package back when Apple itself was still maintaining the JDK for Mac OS X. All of that was ported into java.awt.Desktop for Java 9 as per JEP 272: Platform-Specific Desktop Features and so I guess some of these features are still only implemented for Mac OS X to this day.
Fortunately, Windows 10 does have a SHOpenFolderAndSelectItems function that we can call via JNA like so:
public interface Shell32 extends com.sun.jna.platform.win32.Shell32 {
Shell32 INSTANCE = Native.load("shell32", Shell32.class, W32APIOptions.DEFAULT_OPTIONS);
HRESULT SHParseDisplayName(WString pszName, Pointer pbc, PointerByReference ppidl, WinDef.ULONG sfgaoIn, Pointer psfgaoOut);
HRESULT SHOpenFolderAndSelectItems(Pointer pidlFolder, WinDef.UINT cidl, Pointer apidl, WinDef.DWORD dwFlags);
}
public class Shell32Util extends com.sun.jna.platform.win32.Shell32Util {
public static Pointer SHParseDisplayName(File file) {
try {
PointerByReference ppidl = new PointerByReference();
// canonicalize file path for Win32 API
HRESULT hres = Shell32.INSTANCE.SHParseDisplayName(new WString(file.getCanonicalPath()), null, ppidl, new WinDef.ULONG(0), null);
if (W32Errors.FAILED(hres)) {
throw new Win32Exception(hres);
}
return ppidl.getValue();
} catch (Exception e) {
throw new InvalidPathException(file.getPath(), e.getMessage());
}
}
public static void SHOpenFolderAndSelectItems(File file) {
Pointer pidlFolder = SHParseDisplayName(file);
try {
HRESULT hres = Shell32.INSTANCE.SHOpenFolderAndSelectItems(pidlFolder, new WinDef.UINT(0), null, new WinDef.DWORD(0));
if (W32Errors.FAILED(hres)) {
throw new Win32Exception(hres);
}
} catch (Exception e) {
throw new InvalidPathException(file.getPath(), e.getMessage());
}
}
}

System Tray image not loading java

I have a program which when runs displays an icon in system tray. i am using the below code to display an icon in system tray area:
public static void showTrayIcon() {
if (java.awt.SystemTray.isSupported()) {
st = java.awt.SystemTray.getSystemTray();
image = Toolkit.getDefaultToolkit().getImage(PongeeUtil.class.getClass().getResource("export.png"));
ActionListener listener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null, "Hello");
}
};
PopupMenu popup = new PopupMenu();
MenuItem defaultItem = new MenuItem("sdf");
defaultItem.addActionListener(listener);
popup.add(defaultItem);
trayIcon = new TrayIcon(image, "Tray Demo", popup);
trayIcon.addActionListener(listener);
try {
st.add(trayIcon);
} catch (AWTException e) {
System.err.println(e);
}
}
}
When i call this method in my main() i got something in my system tray but icon is missing. i think image is not able to load. image is in the same package where my java files resides.
What am i doing wrong here ?

image is in the same package where my java files are
If you take a look at the JavaDocs for Toolkit#getImage you will find that it says...
Returns an image which gets pixel data from the specified file
This is important. You should also know that getImage loads the physical image in a background thread, which means if it fails to load the image, it will do so silently...
Okay. The core problem is, once the image is placed within the context of the application (with the class files), it becomes, whats commonly known as, an embedded resource.
These resources can not be loaded via any means that requires access to a file on the file system.
Instead, you need to use Class#getResource or Class#getResourceAsStream to load them, for example
image = Toolkit.getDefaultToolkit().getImage(YourClass.class.getResource("/package/path/to/classes/export.png"));
Or more preferabbly...
BufferedImage img = ImageIO.read(YourClass.class.getResource("/package/path/to/classes/export.png"));
image = new ImageIcon(img);
ImageIO will throw an IOException when it can't load the image for some reason, which gives you more diagnostic information to fix problems
nb:
YourClass is you class which contains the showTrayIcon method...
/package/path/to/classes is the package name under which the image is stored...

Java: When a program is .jar 'ed, it no longer reads the images in the jar file?

I need it to run without having the files exported to the computer.
At the moment, my code for storing the images is:
ImageIcon icon = new ImageIcon("images\\images2.gif");
It can't just be an image since I'm adding it to a JLabel.
When I jar the entire program, it stores the image files in the jar.
When I go to run the actual problem, there are no images.
Again, I can't just leave the .jar in a folder with the images already. It has to work on a separate computer, by itself.

You'll want to get the image via the system class loader:
URL url = ClassLoader.getSystemClassLoader().getResource("images/images2.gif");
Icon icon = new ImageIcon(url)
images is at the root of the classpath.
Note that the Java runtime will translate the separator (/) to the OS specific separator (\ for Windows).

You need to access those files through class-loader... Something like this:
InputStream is = this.getClass().getClassloader().getResourceAsStream("images/image.ico");
HTH
UPD: note, that this will work both with JARed package and with plain directory structure.

The basic issue is that the File class only knows how to work with what the underlying operating system consider a file, and a whole one.
A jar file is essentially a zip file with some extra information so you cannot use File's with that. Instead Java provides the "resource" concept which roughly translates to "a chunk of bytes or characters which we don't care where is, as long as we have them when we need them". You can ask the class loader for any resource in the class path - which is what you want here - or access it through an URL.

Try this:
ImageIcon icon = new ImageIcon(this.getClass().getClassloader().getResource("images/images2.gif"));
if that doesn't work, replace this.getClass().getClassloader() with MyClass.class where MyClass is the name of your class.
I remember having to edit this slightly to make it work in Eclipse, but when you deploy it, it works like a charm.
Edit: To make it work in Eclipse, you may need to change it to:
ImageIcon icon = new ImageIcon(this.getClass().getClassloader().getResource("bin/images/images2.gif"));
If that doesn't work, do the standard, replace this.getClass().getClassloader() with MyClass.class. If it still doesn't work, try replacing "bin" with "src". Try jar'ing it with the first way and see what happens.

Here is a convenient utility class that can be used for loading image resources. The log4j logger can be removed of changed to whatever is more appropriate.
public class ResourceLoader {
private static final Logger logger = Logger.getLogger(ResourceLoader.class);
public static Image getImage(final String pathAndFileName) {
try {
return Toolkit.getDefaultToolkit().getImage(getURL(pathAndFileName));
} catch (final Exception e) {
logger.error(e.getMessage());
return null;
}
}
public static ImageIcon getIcon(final String pathAndFileName) {
try {
return new ImageIcon(getImage(pathAndFileName));
} catch (final Exception e) {
logger.error(e.getMessage());
return null;
}
}
public static URL getURL(final String pathAndFileName) {
return Thread.currentThread().getContextClassLoader().getResource(pathAndFileName);
}
}

I suppose images2.gif is inside the package images
URL imageurl = getClass().getResource("/images/images2.gif");
Image myPicture = Toolkit.getDefaultToolkit().getImage(imageurl);
JLabel piclabel = new JLabel(new ImageIcon( myPicture ));
piclabel.setBounds(0,0,myPicture.getWidth(null),myPicture.getHeight(null));

If your images are located this way.
Then this should do the job.
private String imageLocation "/images/images2.png";
private ImageIcon getImageIconFromJar(String imageLocation)
{
try
{
BufferedImage bi = ImageIO.read(this.getClass().getResource(imageLocation));
ImageIcon ic = new ImageIcon(bi);
return ic;
} catch (IOException e)
{
System.out.println("Error: "+e);
}
return null;
}