Changing the icon of my java application

Question

for a simple Java Desktop Application I added a JFrame Form with the assistant of the NetBeans IDE. For this frame I want to change the icon in the title bar. I tried to do so with the following code at the very end of the constructor in the generated View class:

ImageIcon ii = new ImageIcon(iconUrl);
    this.getFrame().setIconImage(ii.getImage());

The String iconUrl is definitely correct, the object ii seems to be alright as far as I can judge from the variables overview in the debugger perspective. However, the icon in the title bar does not change, it's still the default java icon.

Why?

score 5 · Accepted Answer · answered Feb 17 '12 at 12:15

5

You can try this:

Image i = ImageIO.read(getClass().getResource("/path/to/image"));
setIconImage(i);

Note that here / would represent your src directory

answered Feb 17 '12 at 12:15

Sapan Diwakar

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When I put this into my constructor, it says "Cannot find symbol: Class: Image". So, it doesn't know the class "Image". What's wrong? – amsmath Oct 24 '17 at 02:26
This process is making loading of frame very slow – Danger Jan 09 '18 at 08:13

score 0 · Answer 2 · answered Feb 17 '12 at 12:16

0

Try this code

Image i = new ImageIcon(ClassLoader.getSystemResource("signal/icm/gui/images/oconp.png")).getImage();
setIconImage(i);

answered Feb 17 '12 at 12:16

Sunil Kumar B M

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Never use ClassLoader for accessing Non System Resources, always use getClass().getResource(stringPath); Watch for the line in this [Access to Resources](http://docs.oracle.com/javase/7/docs/technotes/guides/lang/resources.html) document, "All class loaders will search for a resource first as a system resource, in a manner analogous to searcing for class files.". – nIcE cOw Feb 17 '12 at 12:24

score 0 · Answer 3 · edited Jan 02 '17 at 10:40

0

Hope following solution works for you:

ImageIcon icon = new ImageIcon(IconURL);  
myImg = ImageIcon.getImage();   
JFrame.setIconImage(myImg);

edited Jan 02 '17 at 10:40

limonik

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answered Feb 17 '12 at 12:22

me_digvijay

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Changing the icon of my java application

3 Answers3

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