Question

JAVA编程！

编写一个Applet在屏幕中画一组同心圆,其中两个圆的直径大小相差10,Applet的大小为300*300。

Answer 1

import java.applet.Applet;
import java.awt.Graphics;

public class TestApplet extends Applet{
static final int WIDTH = 300;
static final int HEIGHT = 300;
static final int RAD = 10;

public void paint(Graphics g) {
this.setSize(WIDTH, HEIGHT);
g.drawOval(0, 0, WIDTH, HEIGHT);
g.drawOval(RAD/2, RAD/2, WIDTH-RAD, HEIGHT-RAD);
}

public void setSize(int width, int height) {
super.setSize(width, height);
}
}