为什么setIcon不在JButton上显示图像？ [英] Why isn't setIcon displaying image on JButton?

问题描述

我发誓我到处寻找并且谷歌上网了好几个小时。我已经为所有按钮添加了 actionListeners ，当点击一个按钮时，我想给它一个带有 setIcon（image）的图像像这样：

I swear I've looked everywhere and have been googling for hours. I have added actionListeners to all buttons, and when one is clicked, I want to give it an image with setIcon( image ) like so:

public void actionPerformed(ActionEvent e) {
    if(e.getSource() == button) {

    ImageIcon icon = new ImageIcon(getClass().getResource("/Images/" +letter+ ".PNG"));
    button.setIcon(icon );
}

1）我知道它正在检索图像，因为按钮.getIcon（）给我一些类似的文件：/Users/path/to/Images/X.PNG 。我在设置图标之前和之后检查过它是否为空，之后它不为空。

1) I know it's retrieving the image because button.getIcon() gives me something like file:/Users/path/to/Images/X.PNG. I've checked if it's null before and after I've set the icon and it's not null afterward.

2）除了<$我还试过了setIcon的其他变种c $ c> getClass（）... 和 ImageIO.read ... 和 BufferedImage 。

3）我不想添加更多代码，因为我甚至不确定其他相关内容。我希望你的一些推测

3) I don't want to add more code because I'm not even sure what else is relevant. I was hoping for some of your speculations

4）在eclipse中，我将输出文件夹更改为 src （而不是 bin ），这就是我的 Images 文件夹的位置。

4) In eclipse, I changed my output folder to src (instead of bin), and that's where my Images folder is.

推荐答案

我认为我遇到了同样的问题。我正在使用Eclipse，在JGrasp中测试我的代码并且它有效。原来Eclipse需要Project文件夹中的资源，而不是SRC或BIN。

I had a the same problem, I think. I was using Eclipse, tested my code in JGrasp and it worked. Turns out Eclipse wants the resources in the Project folder, not the SRC or BIN.

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