java - 将默认的 Java 咖啡码头图标更改为其他图标

Question

我阅读了很多答案来更改图像中显示的默认 java 咖啡图标（操作系统：MacOS）（例如使用 JFrame.setIconImage()），但无法做到。

如果有人成功地改变它。您能否就您如何做到这一点提供逐步的解决方案，并可能提供解释？

标签： javajframe

Answer 1

So, I did a really quick test using...

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JLabel;
import com.apple.eawt.Application;

public class Test {

    public static void main(String[] args) {
        try {
            Application application = Application.getApplication();
            application.setDockIconImage(ImageIO.read(Test.class.getResource("/javaapplication163/bunny.jpg")));
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        new Test();
    }

    public Test() {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                JFrame frame = new JFrame();
                frame.add(new TestPane());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public static class TestPane extends JPanel {

        public TestPane() {
            add(new JLabel("Hello"));
        }

    }

}

And it showed...

Neat ... however, this will only compile and run on a Mac.

A "typical" solution to this would be to use reflection to try and load the com.apple.eawt.Application at run time, something like...

try {
    Class appClass = Class.forName("com.apple.eawt.Application");
    Class params[] = new Class[]{Image.class};

    Method getApplication = appClass.getMethod("getApplication");
    Object application = getApplication.invoke(appClass);
    Method setDockIconImage = appClass.getMethod("setDockIconImage", params);
    setDockIconImage.invoke(application, ImageIO.read(Test.class.getResource("/javaapplication163/bunny.jpg")));

} catch (NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | ClassNotFoundException | IOException ex) {
    ex.printStackTrace();
}

But this is some what error prone and messy, not to mention a complete pain in the ... code to maintain.

So, then I thought I might try using the command line parameters, as demonstrated at The dock icon...

-Xdock:name="Hello bunny" -Xdock:icon=/path/to/bunny.jpg

which also worked.

While I kind of prefer this solution, it does mean that the icon needs to be externalised from Jar, which is kind of a pain, and you'll probably need to supply a full working path.

If I was to generate a App bundle for my project, I'd probably follow this, but if I was just deploying a Jar, I might be tempted to use one of the previous methods