Applet之间单向通信解决方法

// AppletTalkA.javaimport java.awt.*;import java.applet.*;import java.awt.event.*;public class AppletTalkA extends Applet {    Button sendB;    TextField mesgField;    public void init() {        mesgField=new TextField(30);        sendB=new Button("Send");        sendB.addActionListener(this);//编译不通过    }       public void actionPerformed(ActionEvent e) {        if(e.getSource()==sendB){            String mesg=mesgField.getText();            AppletTalkB receiver=(AppletTalkB)getAppletContext().getApplet("receiver");            if(receiver!=null) receiver.getMessage(mesg);            mesgField.setText("");            }                }}// AppletTalkB.javaimport java.applet.*;import java.awt.*;import java.awt.event.*;public class AppletTalkB extends Applet{    TextArea mesgArea;    public void init(){        mesgArea=new TextArea(10,30);                }    public void getMessage(String mesg){        mesgArea.append(mesg+"\n");        }            }