import javax.swing.*;
import java.awt.*;
public class Test1 {
int x = 70;
int y = 70;
public static void main (String[] args) {
Test1 gui = new Test1();
gui.go();
}
public void go() {
JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MyDrawPanel drawPanel = new MyDrawPanel();
frame.getContentPane().add(drawPanel);
frame.setSize(300,300);
frame.setVisible(true);
for (int i = 0; i < 130; i++) {
x++; y++;
drawPanel.repaint();
try { Thread.sleep(50);
} catch(Exception ex) { } }
}// close go() method
class MyDrawPanel extends JPanel {
public void paintComponent(Graphics g) {
g.setColor(Color.green);
g.fillOval(x,y,40,40);
}
} // close inner class
} // close outer class
據2頁,圓應在框架塗抹......但實際上,當我跑它,它只是移動無拖尾。那是爲什麼? 順便說一句,如果這些代碼無法做出塗抹圈,我該如何塗抹一個?
歡呼
什麼操作系統.......? – MadProgrammer
OSX ............ –
這可能是一個與它在Mac上的實現有關的問題,因爲我可以確認您的代碼的工作原理而不會模糊 – MadProgrammer