I created a .jar file from Eclipse for a project.
Before the .jar creation, I was reading in images like this:
jLabel = new JLabel(new ImageIcon("src/someImage.png"));
But now, for the .jar, I'm using:
BufferedImage img = ImageIO.read(getClass().getResourceAsStream("someImage.png"));
jLabel = new JLabel(new ImageIcon(img));
Which works fine, however further in the code, I need to pick between particular images, and the non-.jar file used this:
icon = jLabel.getIcon().toString();
if (icon.contains("happy")) {
// do something
But obviously this won't work. The icon as is comes out just as something like javax.swing.ImageIcon#35083305
I tried just adding something like jLabel.setText("someText"); but I have been unable to retrieve said text.
I saw this, and note that BufferedImage doesn't have a method to get its filename (as of course it may not be a file).
Is there a way I can reference the jLabel in a similar fashion?
Related
I am attempting to add a picture to the first tab of a JTabbedPane, here is my code:
JTabbedPane application = new JTabbedApplication();
JPanel welcomePanel = new JPanel();
JLabel imageLabel = new JLabel(new ImageIcon("track.jpg"));
welcomePanel.add(imageLabel);
application.addTab("WELCOME", welcomePanel);
application.setMnemonicAt(0, KeyEvent.VK_1);
The image file is located in the same location as the class this code is in. For some reason, however, my image is not appearing. I have used the same JLabel and used text instead of an image and it appears. Can someone give me some insight into this problem?
Java doesn't know that the image is located directly beside the running class file. You have to hand in the absolute path. Which means Path + filename.
This little piece of code will help you to tell Java that the image is in the current working directory.
String file = new File("track.jpg").getAbsolutePath();
Added to your code snipped it looks like this:
JTabbedPane application = new JTabbedPane();
JPanel welcomePanel = new JPanel();
String file = new File("track.jpg").getAbsolutePath();
JLabel imageLabel = new JLabel(new ImageIcon(file));
welcomePanel.add(imageLabel);
application.addTab("WELCOME", welcomePanel);
The image file is located in the same location as the class this code is in
Instead of JLabel imageLabel = new JLabel(new ImageIcon("track.jpg")); which is looking for a file in the current working directory, you should be using Class#getResource which will return a URL to the embedded resource.
It's important to note, that resources which are store within the application context (ie embedded inside the Jar or within the source packages) aren't accessible as "files" anymore.
Instead, you could try using something like...
ImageIcon icon = new ImageIcon(ImageIO.read(getClass().getResource("track.jpg"));
to load the image. Unlike ImageIcon, ImageIO.read will throw an IOException if the image can't be read, which is always more useful than the silence that you get from ImageIcon
If this fails to work, more context on the structure of your app will be needed
I looked all over the place but I am still stuck on how directory works to find the image to put onto the JPanel. Where is the image supposed to be? I clicked on properties for my image and it shows Location: C:\Users\Joseph\Pictures\Background and the picture's name is random.jpg.
I am trying to add an image to a tab using tabbedPane. Here is what I have so far, and I am not able to do it.
JPanel flPanel = new JPanel();
flPanel.setLayout(new FlowLayout());
ImageIcon image = new ImageIcon(getClass().getResource(""));
// Tried /Users/Joseph/Pictures/Background/random.jpg and doesn't work
JLabel j1 = new JLabel(image);
flPanel.add(j1);
tabbedPane.add("Tab 2", flPanel);
Is the picture supposed to be in the same package file as the project? Or is it supposed to be in the source file to be able to just do "random.jpg"?
If you want the image to be available to your application at runtime, then you should consider making sure that the image is included within your Jar when you application is built.
From the sounds of it, you are using Netbeans, you should copy the image to a directory within your src directory of your project.
You should then be able to use...
BufferedImage bi = ImageIO.read(getClass().getResource("/full/path/to/image/random.jpg"));
ImageIcon image = new ImageIcon(bi);
The path to the image should be the full path (from the context of the src directory) within your project.
That is, if you placed the image in the resources directory within the src directory, then you would use /resources/random.jpg as the path/file name
Take a look at Reading/Loading an Image for more details
getClass().getResource(...) will only get resources inside the classpath.
You can use ImageIO.read(File) like this:
BufferedImage bi = ImageIO.read(new File("C:\\Users\\Joseph\\Pictures\\Background\random.jpg"))
ImageIcon image = new ImageIcon(bi);
I am trying to upload an image on a GUI. Here is what my code reads right now:
ImageIcon icon = new ImageIcon(nameSearched.getImage());
myLabelK = new JLabel();
myLabelK.setBounds(500,100,200,200);
myLabelK.setIcon(icon);
myPanel.setLayout(null);
myPanel.add(myLabelK);
Validate();
add(myPanel);
setVisible(true);
When I run my program this image is not popping up on my GUI.
The nameSearched.getImage() is calling a method in a different class which returns an image entered into the system. For example, Peter.jpg.
Please help me figure out how to get my image on the screen.
If you are just using Peter.jpg as you relative path name,
Using an IDE, you image should be ditrectly below the ProjectRoot directory
ProjectRootDir
Peter.jpg
src
If you wanted to have your image in an images folder:
use "images\Peter.jpg"
ProjectRootDir
images
Peter.jpg
src
Maybe you want to retrieve the image like this
ImageIcon icon = new ImageIcon("Peter.jpg");
Another possibility, If you do this:
ImageIcon icon = new ImageIcon(nameSearched.getImage());
then nameSearched.getImage() must return either a String fie path of the image
or an Image object.
Maybe you just want nameSearched.getImage() to return a String from an array of String paths. Not sure what nameSearched.getImage() actually does so I can't go into further explanation or correction
i have a the path of an image in a string i want to display it on a jlabel using the path. please help me.
if(!ar.get(16).equals("empty")){
String photo=(String)ar.get(16);
System.out.println(photo);
// if(!photo.equals(""))
// pic.setText(photo);
Image image=Toolkit.getDefaultToolkit().getImage(photo);;
ImageIcon img=new ImageIcon(image.getScaledInstance(view.jLabel5.getWidth(), view.jLabel5.getHeight(), 0));
//JpegReader jrdr=new JpegReader();
//view.jLabel5.setSize(img, image.getWidth());
view.jLabel5.setPreferredSize(new Dimension(100, 100));
view.jLabel5.setIcon(img);
}
If the image is an embedded resources (ie lives within the application context/is bundled with the application Jar), then you need to use getResource to gain access to it..
Toolkit.getDefaultToolkit().getImage expects that the String passed to it is a file on the file system.
If the image is embedded, then you will need to use something more like...
Toolkit.getDefaultToolkit().getImage(getClass().getResource(photo))
To load it.
If the image is being loaded from the file system, you could use
File file = new File(photo);
if (file.exists()) {
// Attempt to load the image
} else {
// Show error message.
}
Because of the way Toolkit#getImage works, it will not provide any details if the image fails to load for some reason.
Instead, you should be using ImageIO, which will throw an IOException if it was unable to load the image for some reason...
BufferedImage img = ImageIO.read(getClass().getResource(photo));
or
BufferedImage img = ImageIO.read(new File(photo));
Depending on where the image is located.
Take a look at Reading/Loading an Image.
You should also avoid calling setPreferredSize explicitly and simply allow JLabel to make it's own choices...
Put the image file in the project. Under a seperate folder.
ImageIcon image = new ImageIcon(this.getClass().getResource("/images/abc.jpg"));
JLabel imageLabel = new JLabel(image, JLabel.CENTER);
If you want to load the image for any other location on your computer then,
ImageIcon image = new ImageIcon("C:/images/image.png");
JLabel imagelabel = new JLabel(image);
Make sure your paths are correct. If you photo string path is "photo.jpeg", your path should look something like this
ProjectRoot
photo.jpeg
src
If you want to put the photo.jpeg in a directory images, you should use "images/photo.jpeg"
ProjectRoot
images
photo.jpeg
src
This is considering you're using an IDE like Netbeans or Ecplise.
I have already tried the following =
ImageIcon clear = new ImageIcon ("icons\delete1.png");
JButton clearBT = new JButton(clear);
And it works perfectly, I just have a question to make. The directory of the image is into my hard disk, but I want to deliver my project to my professor, so I am not sure if the image will still show up when in his computer. The thing is that I am not sure if the directory that I've put in my code (which exactly is "C:\\Users\\George\\Desktop\Giorgos\\icons\\delete1.png") will have something to show on my professor's pc.
Thank you in advantage for your answers, and if I am not clear enough, I am willing to rephrase.
If icons folder is in project directory folder and in code you are calling the image with :
ImageIcon clear = new ImageIcon ("icons\delete1.png");
And It's working perfectly ,then It will work anywhere.
Just Make sure you are not calling the image location address as its complete address that is referring to your computer hard disk.
If Your Professor's PC has internet access then you can use something like
(Please upload your file somewhere on internet like imgur and pass that url of your image new URL(here))
URL lenna =
new URL("http://upload.wikimedia.org/wikipedia/en/2/24/Lenna.png");
ImageIcon clear = new ImageIcon (URL);
JButton clearBT = new JButton(clear);
Put the picture in you projects and you will have to change your code to
JButton clearBT = new JButton(new ImageIcon(getClass().getResource(image_path)));
Another option would be to ship the image bundled with your source code. For instance, create a "package" / directory inside your project hierarchy and store images there.
Then, you can load them this way:
ImageIcon image = new ImageIcon(getClass().getResource("/path/to/the/image");
For instance, if the image is under org/example/program then the above will be:
ImageIcon image = new ImageIcon(getClass().getResource("/org/example/program/image.png");