在JFrame中设置图标

Question

I want to change the icon of the project instead of java icon. When the program icon is being displayed in status bar, it should be displaying the customized icon instead of default java icon.

I am using the following code. Please suggest me what's wrong in this code.

class newframe extends JFrame 
{

    Container cp;
    newframe()
    {
        cp=this.getContentPane();
        cp.setLayout(null);
    }

    public static void main(String args[])
    {
        newframe frm= new newframe(); 

        frm.setbounds(0,0,1000,800);
        frm.setVisible(true);
        ImageIcon im1= new ImageIcon("path upto image");
        frm.setIconImage(im1.getImage());
    }
}

Answer 1

..new ImageIcon("path upto image"); 

框架图标通常是嵌入式资源，因此必须通过URL而不是File （代表路径的String ）访问。

Answer 2

There are a couple of things that would be keeping it from compiling. First:

frm.setbounds(0,0,1000,800);

Your "setbounds" should have a capital B. Typically, functions will be cased such that the first letter of the first word is lowercased, and subsequent words are upper-cased. See this link for the doc on setBounds: setBounds

There's a second issue in your ImageIcon path. Its hard to say if that came right from your code or if you removed the path for the sake of the example, but Andrew Thompson has addressed that adequately.

Answer 3

I think the problem is the decleration of the imageicon. What you should do is instead of getting the direct path, do something like this:

ImageIcon im1= new ImageIcon("Toolkit.getDefaultToolkit(). getImage(getClass().getResource("path upto image"))");
I do this with all of my applications, and it works every time.