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
据2页,圆应在框架涂抹......但实际上,当我跑它,它只是移动无拖尾。那是为什么? 顺便说一句,如果这些代码无法做出涂抹圈,我该如何涂抹一个?
欢呼
什么操作系统.......? – MadProgrammer
OSX ............ –
这可能是一个与它在Mac上的实现有关的问题,因为我可以确认您的代码的工作原理而不会模糊 – MadProgrammer