工作代码
import java.awt.*;
import javax.swing.*;
import java.net.URL;
class CounterFrame extends JFrame {
private static final long serialVersionUID = 1L;
private MyPanel myComponent = new MyPanel();
private JLabel contentPane;
CounterFrame() {
try {
URL url = new URL("http://pscode.org/media/stromlo2.jpg");
contentPane = new JLabel(new ImageIcon(url));
} catch(Throwable t) {
t.printStackTrace();
}
contentPane.setLayout(new GridBagLayout());
setContentPane(contentPane);
add(myComponent);
}
public static void main(String[] args) {
//Create the frame on the event dispatching thread
SwingUtilities.invokelater(new Runnable(){
@Override
public void run() {
CounterFrame rc = new CounterFrame();
rc.setDefaultCloSEOperation(JFrame.DISPOSE_ON_CLOSE);
rc.pack();
rc.setVisible(true);
}
});
}
}
class MyPanel extends JPanel {
private static final long serialVersionUID = 1L;
private String target;
private String raised = "200000";
private Image background;
public MyPanel() {
setPreferredSize(new Dimension(200,100));
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D twoD = (Graphics2D) g;
RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
rh.put(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
twoD.setRenderingHints(rh);
twoD.setColor(Color.BLACK);
twoD.drawString(raised,5, 90);
}
}
我可以从中得出的唯一结论是：
找不到您的资源。 您需要学习基本的调试技巧。在这种情况下，具体来说是“检查每个步骤中正在发生的假设是否确实有效”。如下所示的“三级”语句应分解为3个语句，同时使用System.out.println()或调试器检查3个结果中的每一个。 调试不友好！
new JLabel(new ImageIcon(getClass()
.getResource("background/2.jpg")));
602392714
清零编程群