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Trying to get rating applet to work

4 replies on 1 page. Most recent reply: Jul 5, 2003 3:58 PM by zenykx

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timmy

Posts: 3
Nickname: tamir
Registered: Jul, 2003

Trying to get rating applet to work

Posted: Jul 5, 2003 8:17 AM

Hey guys.

Okay i'm trying to make an applet which will act as a sort of rating system. with a choice from 1 to10. and the average result shown next to it.

I have some java code:

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class Rate extends Panel implements ItemListener{

Choice numbers = new Choice();
Label average = new Label("0");
Label total = new Label("0");
int t;
double a;
double newa;
int selected;
Canvas c = new Canvas();

public void init() {
c.setBackground(Color.yellow);
setLayout(new FlowLayout());
numbers.add("1"); numbers.add("2"); numbers.add("3");
numbers.add("4"); numbers.add("5"); numbers.add("6");
numbers.add("7"); numbers.add("8"); numbers.add("9");
numbers.add("10");
numbers.addItemListener(this);
add(numbers );
add(average);
add(total);
setVisible(true);

}

public void itemStateChanged(ItemEvent e) {

t = (Integer.parseInt(total.getText()) + 1);
a = Double.parseDouble(average.getText());
newa = 0;
selected = (numbers.getSelectedIndex() + 1);

newa = (a+selected) / (t);

average.setText(""+newa);
total.setText(""+t);
}
}

this compiles fine but if i try to run it in a browser as an applet i get a class exception error ( to be more specific: "Exception: java.lang.ClassCastException: Rate")

could anyone help me out?
thanks

zenykx

Posts: 69
Nickname: zenykx
Registered: May, 2003

Re: Trying to get rating applet to work

Posted: Jul 5, 2003 8:33 AM

Must extend Applet... not Panel

timmy

Posts: 3
Nickname: tamir
Registered: Jul, 2003

Re: Trying to get rating applet to work

Posted: Jul 5, 2003 8:41 AM

Oh b****y hell!!!
It's always something really small.
A past mistake when experimenting.

Thanks alot. for the life of me i just kept skipping past that.

timmy

Posts: 3
Nickname: tamir
Registered: Jul, 2003

Re: Trying to get rating applet to work

Posted: Jul 5, 2003 8:45 AM

hmm...it still doesn't work...it still comes up with the same error even when i change Panel to Applet.

zenykx

Posts: 69
Nickname: zenykx
Registered: May, 2003

Re: Trying to get rating applet to work

Posted: Jul 5, 2003 3:58 PM

If you really make Rate extend Applet and then recompile it works. I don't know what is wrong but i try it!

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