Error in JAVA while running applet program

While I was running my applet program, I got in applet viewer window as "Applet not initialized" and in cmd i got the following errors!

    **java.lang.ClassCastException: application cannot be cast to java.applet.Applet
    at sun.applet.AppletPanel.createApplet(
    at sun.applet.AppletPanel.runLoader(

Can anyone help me why does this error occur?

Here's my code:

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
//<applet code="application" width=500 height=500> </applet>
public class application extends Frame implements ActionListener,ItemListener
Label name,regno
Button submit;
TextField tname,tregno;
String msg=" ";
public void init()
    name=new Label("Name");   //Adding name and regno field box
    regno=new Label("Register No");
    submit=new Button("Submit");
    tname=new TextField(20);
    tregno=new TextField(10);
    add(name); add(tname);
    add(regno); add(tregno);
public void actionPerformed(ActionEvent ae)
    String str=ae.getActionCommand();
        msg="Your application form is submitted successfully";
    app a=new app();    //Reference for my next program called "app"
public void itemStateChanged(ItemEvent ie)
public void paint(Graphics g)
    g.drawString("Name: "+tname.getText(),10,160); //Printing the name and regno
    g.drawString("Register No: "+tregno.getText(),10,180);

In the above program, I've created a basic applet structure that gets the details of the person(name and regno) and hyperlinks to another program when submit button is clicked.


An Applet class should be a subclass of Applet. Revise the class declaration so that it also extends Applet:

public class application extends ..., Applet {
    //code here

More information on java.applet.Applet can be found on Javadocs.

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