如何更改 Java 中的默认应用程序图标？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/209812/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How do I change the default application icon in Java?
提问by Bill the Lizard
I'm using NetBeans, trying to change the familiar Java coffee cup icon to a png file that I have saved in a resources directory in the jar file. I've found many different web pages that claim they have a solution, but so far none of them work.
我正在使用 NetBeans，试图将熟悉的 Java 咖啡杯图标更改为一个 png 文件，该文件已保存在 jar 文件的资源目录中。我发现许多不同的网页声称他们有解决方案，但到目前为止它们都不起作用。
Here's what I have at the moment (leaving out the try-catch block):
这是我目前所拥有的（不包括 try-catch 块）：
URL url = new URL("com/xyz/resources/camera.png");
Toolkit kit = Toolkit.getDefaultToolkit();
Image img = kit.createImage(url);
getFrame().setIconImage(img);
The class that contains this code is in the com.xyzpackage, if that makes any difference. That class also extends JFrame. This code is throwing a MalformedUrlException on the first line.
包含此代码的类位于com.xyz包中（如果这有什么不同的话）。该类还扩展了 JFrame。此代码在第一行抛出 MalformedUrlException。
Anyone have a solution that works?
任何人都有有效的解决方案？
采纳答案by JeeBee
java.net.URL url = ClassLoader.getSystemResource("com/xyz/resources/camera.png");
May or may not require a '/' at the front of the path.
路径前面可能需要也可能不需要“/”。
回答by John Gardner
Or place the image in a location relative to a class and you don't need all that package/path info in the string itself.
或者将图像放在相对于类的位置，并且您不需要字符串本身中的所有包/路径信息。
com.xyz.SomeClassInThisPackage.class.getResource( "resources/camera.png" );
That way if you move the class to a different package, you dont have to find all the strings, you just move the class and its resources directory.
这样，如果您将类移动到不同的包，则不必查找所有字符串，只需移动类及其资源目录即可。
回答by user1456935
/** Creates new form Java Program1*/
public Java Program1()
Image im = null;
try {
im = ImageIO.read(getClass().getResource("/image location"));
} catch (IOException ex) {
Logger.getLogger(chat.class.getName()).log(Level.SEVERE, null, ex);
}
setIconImage(im);
This is what I used in the GUI in netbeans and it worked perfectly
这是我在 netbeans 的 GUI 中使用的，它运行良好
回答by Ayoub Aneddame
You can simply go Netbeans, in the design view, go to JFrameproperty, choose icon image property, Choose Set Form's iconImageproperty using: "Custom code" and then in the Form.SetIconImage()function put the following code:
您可以简单地转到 Netbeans，在设计视图中，转到JFrame属性，选择图标图像属性，iconImage使用：“自定义代码”选择设置表单的属性，然后在Form.SetIconImage()函数中放入以下代码：
Toolkit.getDefaultToolkit().getImage(name_of_your_JFrame.class.getResource("image.png"))
Do not forget to import:
不要忘记导入：
import java.awt.Toolkit;
in the source code!
在源代码中！
回答by user2601995
In a class that extends a javax.swing.JFrameuse method setIconImage.
在扩展javax.swing.JFrame使用方法的类中setIconImage。
this.setIconImage(new ImageIcon(getClass().getResource("/resource/icon.png")).getImage());
回答by user2895893
Try This write after
试试这个写后
initcomponents();
setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("Your image address")));
回答by Rrezart A. Prebreza
Example:
例子：
URL imageURL = this.getClass().getClassLoader().getResource("Gui/icon/report-go-icon.png");
ImageIcon iChing = new ImageIcon("C:\Users\RrezartP\Documents\NetBeansProjects\Inventari\src\Gui\icon\report-go-icon.png");
btnReport.setIcon(iChing);
System.out.println(imageURL);
回答by ron190
You should define icons of various size, Windows and Linux distros like Ubuntu use different icons in Taskbar and Alt-Tab.
您应该定义各种大小的图标，Windows 和 Linux 发行版（如 Ubuntu）在任务栏和 Alt-Tab 中使用不同的图标。
public static final URL ICON16 = HelperUi.class.getResource("/com/jsql/view/swing/resources/images/software/bug16.png");
public static final URL ICON32 = HelperUi.class.getResource("/com/jsql/view/swing/resources/images/software/bug32.png");
public static final URL ICON96 = HelperUi.class.getResource("/com/jsql/view/swing/resources/images/software/bug96.png");
List<Image> images = new ArrayList<>();
try {
images.add(ImageIO.read(HelperUi.ICON96));
images.add(ImageIO.read(HelperUi.ICON32));
images.add(ImageIO.read(HelperUi.ICON16));
} catch (IOException e) {
LOGGER.error(e, e);
}
// Define a small and large app icon
this.setIconImages(images);
回答by Alex S
inside frame constructor
内部框架构造函数
try{
setIconImage(ImageIO.read(new File("./images/icon.png")));
}
catch (Exception ex){
//do something
}
回答by Mohamed Aharrat
You can try this one, it works just fine :
你可以试试这个，它工作得很好：
` ImageIcon icon = new ImageIcon(".//Ressources//User_50.png");
this.setIconImage(icon.getImage());`
