How do I change the default application icon in Java

Question

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    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 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

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inside frame constructor  try             setIconImage ImageIO read new File    images icon png              catch  Exception ex            do something

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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

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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   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

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java net URL url   ClassLoader getSystemResource  com xyz resources camera png      May or may not require a     at the front of the path

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

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Example   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

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

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java net URL url   ClassLoader getSystemResource  com xyz resources camera png      May or may not require a     at the front of the path

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You can try this one  it works just fine         ImageIcon icon   new ImageIcon     Ressources  User 50 png        this setIconImage icon getImage

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Example   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

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Try This write after  initcomponents     setIconImage Toolkit getDefaultToolkit   getImage getClass   getResource  Your image address

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java net URL url   ClassLoader getSystemResource  com xyz resources camera png      May or may not require a     at the front of the path

User · Answer

You can try this one  it works just fine         ImageIcon icon   new ImageIcon     Ressources  User 50 png        this setIconImage icon getImage

User · Answer

In a class that extends a javax swing JFrame use method setIconImage    this setIconImage new ImageIcon getClass   getResource   resource icon png    getImage

User · Answer

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   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

User · Answer

java net URL url   ClassLoader getSystemResource  com xyz resources camera png      May or may not require a     at the front of the path

User · Answer

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   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

User · Answer

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   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

User · Answer

You can simply go Netbeans  in the design view  go to JFrame property  choose icon image property  Choose Set Form s iconImage property using   Custom code  and then in the Form SetIconImage   function put the following code    Toolkit getDefaultToolkit   getImage name of your JFrame class getResource  image png      Do not forget to import    import java awt Toolkit    in the source code

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You can simply go Netbeans  in the design view  go to JFrame property  choose icon image property  Choose Set Form s iconImage property using   Custom code  and then in the Form SetIconImage   function put the following code    Toolkit getDefaultToolkit   getImage name of your JFrame class getResource  image png      Do not forget to import    import java awt Toolkit    in the source code

User · Answer

In a class that extends a javax swing JFrame use method setIconImage    this setIconImage new ImageIcon getClass   getResource   resource icon png    getImage

User · Answer

Try This write after  initcomponents     setIconImage Toolkit getDefaultToolkit   getImage getClass   getResource  Your image address

User · Answer

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

User · Answer

inside frame constructor  try             setIconImage ImageIO read new File    images icon png              catch  Exception ex            do something

[java] How do I change the default application icon in Java?

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