Java getClass().getResource在png上返回Null指针 [英] Java getClass().getResource on a png returning Null Pointer

问题描述

我不确定我是否用此代码引用正确的位置，我尝试访问的图像标题为Flower0.png等.

I am not sure if I am referring to the right location with this code, the images I am trying to access are titled Flower0.png etc.

它们与该项目的其余代码位于同一目录中. 此类位于名为hangman.ui的src文件夹中，而.png文件位于名为Resources的目录文件夹中.

They are located in the same directory as the rest of my code for this project. This class is in a src folder called hangman.ui and the .png files are located in a directory folder called Resources.

也许getClass().getResource是不对的?

这是我第一次尝试将图像放入GUI.

This is my first time trying to put images into a GUI.

非常感谢您的帮助！

public WiltingFlowerRendererRemix(HangmanLogic logic) 
{
    panel = new JPanel();
    panel.setLayout(new BorderLayout());
    imageLabel = new JLabel();
    panel.add(imageLabel, BorderLayout.CENTER);

    int numberOfImages = 10;

    images = new ImageIcon[numberOfImages];
    for (int i = 0; i < numberOfImages; i++)
    {
        images[i] = new ImageIcon(getClass().getResource("Flower"+Integer.toString(i) + ".png"));

    }
}

推荐答案

您说图像位于名为资源"的文件夹中吗?您可以这样加载图像:

You say the images are in a folder called "Resources"? You can load images like this then:

BufferedImage image = ImageIO.read(getClass().getResource("/Resources/Flower0.png"));
ImageIcon icon = new ImageIcon(image);

要在GUI上使用它，可以使用JLabel.

To use it on the GUI you can use a JLabel.

JLabel label = new JLabel();
label.setIcon(icon);

然后将标签添加到面板中.

And then add the label to a panel for example.

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