我正在嘗試獲取一個小動畫的圖像，但面板保持白色。圖像與類位于同一文件夾中。public class JBallonPanel extends JPanel implements Runnable{private Image img;private int x, y;JBallonPanel(){ setBackground(Color.white); img=Toolkit.getDefaultToolkit().createImage(".//Ball.jpg"); 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);}
1 回答
墨色風雨
TA貢獻1853條經驗 獲得超6個贊
看看下面，我只是做了一些調整，但你的代碼正在工作。
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);
}
}
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