阅读下面Applet程序import javax. swing. *;import java. awt. *;public class SwintgApplet ext

阅读下面Applet程序 import javax. swing. *; import java. awt. *; public class SwintgApplet extends JApplet{ JLabel 1=new JLabel("This is a Swing Applet."); public void init(){ ________________________________ } } 在程序下画线处填入正确的选项是

A．Container contentPane=getContenPane(); cotentPane. add(1);

B．JPanel comtenPane=new Jpane(); contentPane. add(1);

C．contentPane. add(1);

D．add(1);