blocks|key|1424545|text|创建一个新的ImageIcon对象，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1424546|ImageIcon+img+=+new+ImageIcon(pathToFileOnDisk);|code-block|syntax|javascript|1424547|然后使用setIconImage()将其设置为JFrame|1424548|myFrame.setIconImage(img.getImage());|1424549|还可以查看setIconImages()，它使用List代替。|1424550|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.oracle.com/javase/8/docs/api/javax/swing/JFrame.html#setIconImage-java.awt.Image-|1|https://docs.oracle.com/javase/8/docs/api/java/awt/Window.html#setIconImages-java.util.List-^0|6|9|0|0|4|E|N|6|4|E|0|0|0|5|F|O|4|5|F|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|M|3|N|5|H|7|1C|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1D|8|@$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|Q|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|T|U|V|E|$W|Z]]]]

Create a new <code>ImageIcon</code> object like this:

<pre><code>ImageIcon img = new ImageIcon(pathToFileOnDisk);
</code></pre>

Then set it to your <code>JFrame</code> with <a href="https://docs.oracle.com/javase/8/docs/api/javax/swing/JFrame.html#setIconImage-java.awt.Image-" rel="noreferrer"><code>setIconImage()</code></a>:

<pre><code>myFrame.setIconImage(img.getImage());
</code></pre>

Also checkout <a href="https://docs.oracle.com/javase/8/docs/api/java/awt/Window.html#setIconImages-java.util.List-" rel="noreferrer"><code>setIconImages()</code></a> which takes a <code>List</code> instead.

blocks|key|1424627|text|这里有一个对我有效的替代方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1424628|yourFrame.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource(Filepath)));|code-block|syntax|javascript|1424629|这与公认的答案非常相似。|1424630|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|$]]

Here is an Alternative that worked for me:

<pre><code>yourFrame.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource(Filepath)));
</code></pre>

It's very similar to the accepted Answer.

blocks|key|1209629|text|JFrame.setIconImage(Image+image)是相当标准的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1209630|entityMap^0|0|W|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

<code>JFrame.setIconImage(Image image)</code> pretty standard.

blocks|key|1209675|text|我是这样做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1209676|import+javax.swing.ImageIcon;
import+javax.swing.JFrame;
import+java.io.File;
import+java.awt.event.ActionEvent;
import+java.awt.event.ActionListener;
import+javax.swing.JButton;



public+class+MainFrame+implements+ActionListener{

/**
+*+
+*/


/**
+*+@param+args
+*/
public+static+void+main(String[]+args)+{
++++String+appdata+=+System.getenv("APPDATA");
++++String+iconPath+=+appdata+%2B+"\\JAPP_icon.png";
++++File+icon+=+new+File(iconPath);

++++if(!icon.exists()){
++++++++FileDownloaderNEW+fd+=+new+FileDownloaderNEW();
++++++++fd.download("http://icons.iconarchive.com/icons/artua/mac/512/Setting-icon.png",+iconPath,+false,+false);
++++}
++++++++JFrame+frm+=+new+JFrame("Test");
++++++++ImageIcon+imgicon+=+new+ImageIcon(iconPath);
++++++++JButton+bttn+=+new+JButton("Kill");
++++++++MainFrame+frame+=+new+MainFrame();
++++++++bttn.addActionListener(frame);
++++++++frm.add(bttn);
++++++++frm.setIconImage(imgicon.getImage());
++++++++frm.setSize(100,+100);
++++++++frm.setVisible(true);


}

@Override
public+void+actionPerformed(ActionEvent+e)+{
++++System.exit(0);

}

}|code-block|syntax|javascript|1209677|下面是下载器：|1209678|import+java.awt.GridLayout;
import+java.io.BufferedInputStream;
import+java.io.BufferedOutputStream;
import+java.io.FileOutputStream;

import+java.net.HttpURLConnection;
import+java.net.URL;
import+javax.swing.JFrame;
import+javax.swing.JLabel;
import+javax.swing.JOptionPane;
import+javax.swing.JProgressBar;

public+class+FileDownloaderNEW+extends+JFrame+{
++private+static+final+long+serialVersionUID+=+1L;

++public+static+void+download(String+a1,+String+a2,+boolean+showUI,+boolean+exit)
++++throws+Exception
++{

++++String+site+=+a1;
++++String+filename+=+a2;
++++JFrame+frm+=+new+JFrame("Download+Progress");
++++JProgressBar+current+=+new+JProgressBar(0,+100);
++++JProgressBar+DownloadProg+=+new+JProgressBar(0,+100);
++++JLabel+downloadSize+=+new+JLabel();
++++current.setSize(50,+50);
++++current.setValue(43);
++++current.setStringPainted(true);
++++frm.add(downloadSize);
++++frm.add(current);
++++frm.add(DownloadProg);
++++frm.setVisible(showUI);
++++frm.setLayout(new+GridLayout(1,+3,+5,+5));
++++frm.pack();
++++frm.setDefaultCloseOperation(3);
++++try
++++{
++++++URL+url+=+new+URL(site);
++++++HttpURLConnection+connection+=+
++++++++(HttpURLConnection)url.openConnection();
++++++int+filesize+=+connection.getContentLength();
++++++float+totalDataRead+=+0.0F;
++++++BufferedInputStream+in+=+new++++++BufferedInputStream(connection.getInputStream());
++++++FileOutputStream+fos+=+new+FileOutputStream(filename);
++++++BufferedOutputStream+bout+=+new+BufferedOutputStream(fos,+1024);
++++++byte[]+data+=+new+byte[1024];
++++++int+i+=+0;
++++++while+((i+=+in.read(data,+0,+1024))+>=+0)
++++++{
++++++++totalDataRead+%2B=+i;
++++++++float+prog+=+100.0F+-+totalDataRead+*+100.0F+/+filesize;
++++++++DownloadProg.setValue((int)prog);
++++++++bout.write(data,+0,+i);
++++++++float+Percent+=+totalDataRead+*+100.0F+/+filesize;
++++++++current.setValue((int)Percent);
++++++++double+kbSize+=+filesize+/+1000;

++++++++String+unit+=+"kb";
++++++++double+Size;
++++++++if+(kbSize+>+999.0D)+{
++++++++++Size+=+kbSize+/+1000.0D;
++++++++++unit+=+"mb";
++++++++}+else+{
++++++++++Size+=+kbSize;
++++++++}
++++++++downloadSize.setText("Filesize:+"+%2B+Double.toString(Size)+%2B+unit);
++++++}
++++++bout.close();
++++++in.close();
++++++System.out.println("Took+"+%2B+System.nanoTime()+/+1000000000L+/+10000L+%2B+"++++++seconds");
++++}
++++catch+(Exception+e)
++++{
++++++JOptionPane.showConfirmDialog(
++++++++null,+e.getMessage(),+"Error",+
++++++++-1);
++++}+finally+{
++++++++if(exit+=+true){
++++++++++++System.exit(128);+++
++++++++}

++++}
++}
}|1209679|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here is how I do it:

<pre><code>import javax.swing.ImageIcon;
import javax.swing.JFrame;
import java.io.File;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;



public class MainFrame implements ActionListener{

/**
 * 
 */


/**
 * @param args
 */
public static void main(String[] args) {
 String appdata = System.getenv("APPDATA");
 String iconPath = appdata + "\\JAPP_icon.png";
 File icon = new File(iconPath);

 if(!icon.exists()){
 FileDownloaderNEW fd = new FileDownloaderNEW();
 fd.download("http://icons.iconarchive.com/icons/artua/mac/512/Setting-icon.png", iconPath, false, false);
 }
 JFrame frm = new JFrame("Test");
 ImageIcon imgicon = new ImageIcon(iconPath);
 JButton bttn = new JButton("Kill");
 MainFrame frame = new MainFrame();
 bttn.addActionListener(frame);
 frm.add(bttn);
 frm.setIconImage(imgicon.getImage());
 frm.setSize(100, 100);
 frm.setVisible(true);


}

@Override
public void actionPerformed(ActionEvent e) {
 System.exit(0);

}

}
</code></pre>

and here is the downloader:

<pre><code>import java.awt.GridLayout;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;

import java.net.HttpURLConnection;
import java.net.URL;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JProgressBar;

public class FileDownloaderNEW extends JFrame {
 private static final long serialVersionUID = 1L;

 public static void download(String a1, String a2, boolean showUI, boolean exit)
 throws Exception
 {

 String site = a1;
 String filename = a2;
 JFrame frm = new JFrame("Download Progress");
 JProgressBar current = new JProgressBar(0, 100);
 JProgressBar DownloadProg = new JProgressBar(0, 100);
 JLabel downloadSize = new JLabel();
 current.setSize(50, 50);
 current.setValue(43);
 current.setStringPainted(true);
 frm.add(downloadSize);
 frm.add(current);
 frm.add(DownloadProg);
 frm.setVisible(showUI);
 frm.setLayout(new GridLayout(1, 3, 5, 5));
 frm.pack();
 frm.setDefaultCloseOperation(3);
 try
 {
 URL url = new URL(site);
 HttpURLConnection connection = 
 (HttpURLConnection)url.openConnection();
 int filesize = connection.getContentLength();
 float totalDataRead = 0.0F;
 BufferedInputStream in = new BufferedInputStream(connection.getInputStream());
 FileOutputStream fos = new FileOutputStream(filename);
 BufferedOutputStream bout = new BufferedOutputStream(fos, 1024);
 byte[] data = new byte[1024];
 int i = 0;
 while ((i = in.read(data, 0, 1024)) &gt;= 0)
 {
 totalDataRead += i;
 float prog = 100.0F - totalDataRead * 100.0F / filesize;
 DownloadProg.setValue((int)prog);
 bout.write(data, 0, i);
 float Percent = totalDataRead * 100.0F / filesize;
 current.setValue((int)Percent);
 double kbSize = filesize / 1000;

 String unit = "kb";
 double Size;
 if (kbSize &gt; 999.0D) {
 Size = kbSize / 1000.0D;
 unit = "mb";
 } else {
 Size = kbSize;
 }
 downloadSize.setText("Filesize: " + Double.toString(Size) + unit);
 }
 bout.close();
 in.close();
 System.out.println("Took " + System.nanoTime() / 1000000000L / 10000L + " seconds");
 }
 catch (Exception e)
 {
 JOptionPane.showConfirmDialog(
 null, e.getMessage(), "Error", 
 -1);
 } finally {
 if(exit = true){
 System.exit(128); 
 }

 }
 }
}
</code></pre>

blocks|key|1209753|text|只需添加以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1209754|setIconImage(new+ImageIcon(PathOfFile).getImage());|code-block|syntax|javascript|1209755|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|$]]

Just add the following code:

<pre><code>setIconImage(new ImageIcon(PathOfFile).getImage());
</code></pre>

blocks|key|1424715|text|在我的例子中，super或this在我的类中引用JFrame|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1424716|URL+url+=+getClass().getResource("gfx/hi_20px.png");
ImageIcon+imgicon+=+new+ImageIcon(url);
super.setIconImage(imgicon.getImage());|code-block|syntax|javascript|1424717|entityMap^0|7|5|D|4|O|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

This did the trick in my case <code>super</code> or <code>this</code> referes to <code>JFrame</code> in my class

<pre><code>URL url = getClass().getResource("gfx/hi_20px.png");
ImageIcon imgicon = new ImageIcon(url);
super.setIconImage(imgicon.getImage());
</code></pre>

blocks|key|1209874|text|在构造函数中添加以下代码，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1209875|public+Calculator()+{
++++initComponents();
//the+code+to+be+added++++++++this.setIconImage(newImageIcon(getClass().getResource("color.png")).getImage());+++++}|code-block|syntax|javascript|1209876|将"color.png“更改为要插入的图片的文件名。将此图片拖放到项目的包中(在源包下)。|1209877|运行您的项目。|1209878|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Add the following code within the constructor like so:

<pre><code>public Calculator() {
 initComponents();
//the code to be added this.setIconImage(newImageIcon(getClass().getResource("color.png")).getImage()); }
</code></pre>

Change "color.png" to the file name of the picture you want to insert.
Drag and drop this picture onto the package (under Source Packages) of your project.

Run your project.

I have a <code>JFrame</code> that displays a Java icon on the title bar (left corner).
I want to change that icon to my custom icon. How should I do it?

How to change JFrame icon

Java

我有一个JFrame，它在标题栏(左角)上显示一个Java图标。我想将该图标更改为我的自定义图标。我怎么发动汽车呢？

问如何更改JFrame图标
EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何更改JFrame图标EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何更改JFrame图标
EN