Java 8/Eclipse映像不可见
我试图得到一个小动画图像,但面板保持白色。 图像与类位于同一文件夹中Java 8/Eclipse映像不可见,java,eclipse,jpanel,toolkit,Java,Eclipse,Jpanel,Toolkit,我试图得到一个小动画图像,但面板保持白色。 图像与类位于同一文件夹中 public class JBallonPanel extends JPanel implements Runnable{ private Image img; private int x, y; JBallonPanel(){ setBackground(Color.white); img=Toolkit.getDefaultToolkit().createImage(".//Ball.jpg");
public class JBallonPanel extends JPanel implements Runnable{
private Image img;
private int x, y;
JBallonPanel(){
setBackground(Color.white);
img=Toolkit.getDefaultToolkit().createImage(".//Ball.jpg");
x=this.getWidth()/2;
y=this.getHeight()/2;
}
public void paintComponent(Graphics g){
g.drawImage(img, x, y,
img.getWidth(this), img.getWidth(this), this);
}
看看下面,我刚刚做了一些调整,但您的代码正在运行
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;
//public class JBallonPanel extends JPanel implements Runnable {
//You can remove implements Runnable
public class JBallonPanel extends JPanel {
private Image img;
private int x, y;
JBallonPanel(){
setBackground(Color.white);
// your path should have \\ for example C:\\Ball.jpg or C:\\myImageFolder\\Ball.jpg
// but in your case, it works too.
img=Toolkit.getDefaultToolkit().createImage("C:\\Ball.jpg");
x=this.getWidth()/2;
y=this.getHeight()/2;
}
public void paintComponent(Graphics g){
g.drawImage(img, x, y, img.getWidth(this), img.getWidth(this), this);
}
//And run like this
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.getContentPane().add(new JBallonPanel());
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.pack();
frame.setSize(800, 800);
frame.setVisible(true);
}
}
谢谢你的帮助,当然!完成测试后,告诉我它是否工作正常。我认为您(和OP)缺少
super.paintComponent(g)实际上,不需要调用super.paintComponent(g)
,因为此代码工作正常。如果需要,您可以查看更多信息。