applet在网页中显示的问题
程序代码:
import java.awt.*; import java.applet.Applet; import javax.swing.JApplet; public class MoonApplet extends Applet { public void paint(Graphics g) { g.setColor(Color.red); g.drawString("The Moon", 100,20); int x=0,y=0; y=this.getHeight()/4; x=this.getWidth()/4; int diameter=Math.min(this.getWidth()/2, this.getHeight()/2); g.setColor(Color.yellow); g.fillOval(x, y, diameter, diameter); g.setColor(this.getBackground()); g.fillOval(x-20, y-20,diameter, diameter); } } <html> <applet code="MoonApplet.class" height=100 width=300> </applet> <html>可是在网页中显示的只是一个小叉,这是怎么回事