import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JApplet;public class TaskC extends JApplet {
public void init (){
setBackground(Color.black);
}
public void paint(Graphics g){
setSize(300,300);
g.setColor(Color.red);
g.drawOval(0, 0, 300, 300);
g.drawOval(0, 0, 200, 200);
}
}no black can show out!!
import java.awt.Graphics;
import javax.swing.JApplet;public class TaskC extends JApplet {
public void init (){
setBackground(Color.black);
}
public void paint(Graphics g){
setSize(300,300);
g.setColor(Color.red);
g.drawOval(0, 0, 300, 300);
g.drawOval(0, 0, 200, 200);
}
}no black can show out!!
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JApplet; public class TaskC extends JApplet { public void init (){ setBackground(Color.black); } public void paint(Graphics g){
//setSize(300, 300);这句话去掉 大小在.html文件中指定
g.setColor(Color.red);
g.drawOval(0, 0, 300, 300);
g.drawOval(0, 0, 200, 200); } }