java - 尝试在 jlabel 上设置图标不断中断

Question

问题 我想为 JLabel 设置文件中的图像。每次我运行它时，我都会收到以下错误 --- 任何解决此问题的帮助将不胜感激，谢谢!

这是我的主课

Exception in thread "main" java.lang.IllegalArgumentException: horizontalAlignment
        at javax.swing.JLabel.checkHorizontalKey(JLabel.java:608)
        at javax.swing.JLabel.setHorizontalAlignment(JLabel.java:766)
        at javax.swing.JLabel.<init>(JLabel.java:163)
        at javax.swing.JLabel.<init>(JLabel.java:183)
        at widget.Widget.<init>(Widget.java:30)
        at widget.Widget.main(Widget.java:48)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

public class Widget extends JFrame {
    static String temp;
    static String icon_image;

    public Widget(){
        setUndecorated(true);
        setSize(200,200);
        temp = weather.temp();
        icon_image = "C:\\Users\\jsnow\\IdeaProjects\\SnowWidget_x\\Images\\partlycloudy.gif";
                      //weather.weather_pic();

        JLabel myText = new JLabel("I: "+ temp,
                SwingConstants.TOP);

        JLabel mypic = new JLabel("h", SwingConstants.BOTTOM);

        mypic.setIcon(new ImageIcon(icon_image));

        add(myText);
        add(mypic);

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setVisible(true);

        Shape shape = new Ellipse2D.Float(0,0,200,200);
        AWTUtilities.setWindowShape(this, shape);

    }
    public static void main(String[] args) throws IOException, SAXException, ParserConfigurationException {
        new Widget();


    }

}

Answer 1

将调用 new JLabel 的两个位置更改为如下所示:

    JLabel mypic = new JLabel("h", JLabel.CENTER);