blocks|key|3360980|text|java.net.URL+url+=+ClassLoader.getSystemResource("com/xyz/resources/camera.png");|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3360981|路径的前面可能需要/，也可能不需要。|unstyled|3360982|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>java.net.URL url = ClassLoader.getSystemResource("com/xyz/resources/camera.png");
</code></pre>

May or may not require a '/' at the front of the path.

blocks|key|3148256|text|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，使用“自定义代码”选择设置表单的iconImage属性，然后在Form.SetIconImage()函数中放入以下代码：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3148257|Toolkit.getDefaultToolkit().getImage(name_of_your_JFrame.class.getResource("image.png"))|code-block|syntax|javascript|3148258|别忘了导入：|3148259|import+java.awt.Toolkit;|3148260|在源代码中！|3148261|entityMap^0|Q|6|1O|9|23|J|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|R|$]]

You can simply go Netbeans, in the design view, go to <code>JFrame</code> property, choose icon image property, Choose Set Form's <code>iconImage</code> property using: "Custom code" and then in the <code>Form.SetIconImage()</code> function put the following code: 

<pre><code>Toolkit.getDefaultToolkit().getImage(name_of_your_JFrame.class.getResource("image.png"))
</code></pre>

Do not forget to import: 

<pre><code>import java.awt.Toolkit;
</code></pre>

in the source code!

blocks|key|3148216|text|或者将图像放在相对于类的位置，而不需要字符串本身中的所有包/路径信息。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3148217|com.xyz.SomeClassInThisPackage.class.getResource(+"resources/camera.png"+);|code-block|syntax|javascript|3148218|这样，如果您将类移动到不同的包中，您不必查找所有字符串，只需移动类及其资源目录即可。|3148219|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

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.

<pre><code>com.xyz.SomeClassInThisPackage.class.getResource( "resources/camera.png" );
</code></pre>

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.

blocks|key|3361084|text|在此之后尝试此写入|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3361085|initcomponents();

setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("Your+image+address")));|code-block|syntax|javascript|3361086|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try This write after

<pre><code>initcomponents();

setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("Your image address")));
</code></pre>

blocks|key|3148225|text|++++/**+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);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3148226|这是我在netbeans的GUI中使用的，它工作得很好|unstyled|3148227|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code> /** 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);
</code></pre>

This is what I used in the GUI in netbeans and it worked perfectly

blocks|key|362945|text|在扩展javax.swing.JFrame的类中使用方法setIconImage。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|362946|this.setIconImage(new+ImageIcon(getClass().getResource("/resource/icon.png")).getImage());|code-block|syntax|javascript|362947|entityMap^0|3|I|S|C|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

In a class that extends a <code>javax.swing.JFrame</code> use method <code>setIconImage</code>. 

<pre><code>this.setIconImage(new ImageIcon(getClass().getResource("/resource/icon.png")).getImage());
</code></pre>

blocks|key|3361125|text|你应该定义不同大小的图标，Windows和Linux发行版如Ubuntu在Taskbar和Alt-Tab中使用不同的图标。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3361126|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);|code-block|syntax|javascript|3361127|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You should define icons of various size, Windows and Linux distros like Ubuntu use different icons in Taskbar and Alt-Tab.

<pre><code>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&lt;Image&gt; images = new ArrayList&lt;&gt;();
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);
</code></pre>

blocks|key|3148420|text|你可以尝试这个，它工作得很好：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3148421|`+++ImageIcon+icon+=+new+ImageIcon(".//Ressources//User_50.png");
++++this.setIconImage(icon.getImage());`|code-block|syntax|javascript|3148422|entityMap^0|5|2|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

You can try this one, it works just fine : 

<pre><code>` ImageIcon icon = new ImageIcon(".//Ressources//User_50.png");
 this.setIconImage(icon.getImage());`
</code></pre>

blocks|key|3361136|text|内部框架构造函数|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3361137|try{++++
+++++++setIconImage(ImageIO.read(new+File("./images/icon.png")));+++
+++}
catch+(Exception+ex){
+++++++//do+something
+++}|code-block|syntax|javascript|3361138|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

inside frame constructor

<pre><code>try{ 
 setIconImage(ImageIO.read(new File("./images/icon.png"))); 
 }
catch (Exception ex){
 //do something
 }
</code></pre>

blocks|key|3148320|text|示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3148321|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);|code-block|syntax|javascript|3148322|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Example:

<pre><code>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);
</code></pre>

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.

Here's what I have at the moment (leaving out the try-catch block):

<pre><code>URL url = new URL("com/xyz/resources/camera.png");
Toolkit kit = Toolkit.getDefaultToolkit();
Image img = kit.createImage(url);
getFrame().setIconImage(img);
</code></pre>

The class that contains this code is in the com.xyz package, if that makes any difference. That class also extends JFrame. This code is throwing a MalformedUrlException on the first line.

Anyone have a solution that works?

How do I change the default application icon in Java?

我正在使用NetBeans，试图将熟悉的Java咖啡杯图标更改为保存在jar文件的资源目录中的png文件。我找到了许多不同的网页，声称他们有一个解决方案，但到目前为止，他们都没有工作。下面是我目前所拥有的(省略try-catch代码块)：URL url = new URL("com/xyz/resources/camera.png");Toolkit kit = Toolkit.getDefaul

问如何在Java中更改默认应用程序图标？
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