How to change JFrame icon

Question

I have a JFrame 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

User · Answer

Add the following code within the constructor like so:

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

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.

User · Answer

This did the trick in my case super or this referes to JFrame in my class  URL url   getClass   getResource  gfx hi 20px png    ImageIcon imgicon   new ImageIcon url   super setIconImage imgicon getImage

User · Answer

Create a new ImageIcon object like this   ImageIcon img   new ImageIcon pathToFileOnDisk     Then set it to your JFrame with setIconImage     myFrame setIconImage img getImage       Also checkout setIconImages   which takes a List instead

User · Answer

Here is how I do it   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           and here is the downloader   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

User · Answer

Here is an Alternative that worked for me   yourFrame setIconImage Toolkit getDefaultToolkit   getImage getClass   getResource Filepath       It s very similar to the accepted Answer

User · Answer

Just add the following code   setIconImage new ImageIcon PathOfFile  getImage

User · Answer

JFrame setIconImage Image image  pretty standard

User · Answer

Unfortunately  the above solution did not work for Jython Fiji plugin  I had to use getProperty to construct the relative path dynamically   Here s what worked for me   import java lang System getProperty  import javax swing JFrame  import javax swing ImageIcon   frame   JFrame  Test   icon   ImageIcon getProperty  fiji dir       path relative2Fiji icon png   frame setIconImage icon getImage     frame setVisible True

[java] How to change JFrame icon

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