Help
I get this when I try to compile
Exception in thread "main" java.lang.NoClassDefFoundError: checknum/java
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
publicclass checknumextends Appletimplements ActionListener
{
Button check;
TextField numcheck;
function checknum(number)
{
if ((number%2)==0)
{
return number +" == Even";
}
else
{
return number +" == Odd";
}
}
publicvoid init()
{
setBackground(Color.white);
check=new Button("Check");
numcheck =new TextField("5",100);
check.setBounds(20,20,100,30);
numcheck.setBounds(50,50,100,30);
add(check);
add(numcheck);
check.addActionListener(this);
}
publicvoid stop()
{
}
publicvoid actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == check)
{
numcheck = checknum(numcheck);
}
}
}
[2252 byte] By [
Jay.Kaya] at [2007-11-27 11:00:15]
Your current code is wholly wrong as a Java program code.
Do these two tutorials first:
http://java.sun.com/docs/books/tutorial/getStarted/index.html
http://java.sun.com/docs/books/tutorial/java/index.html
hiwaa at 2007-7-29 12:28:27 >
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class checknum extends Applet implements ActionListener
{
Button check;
TextField numcheck;
function checknum(number) // what is this? is this a method.. this is totally wrong
{// you are returning a string, what type is your parameter?
if ((number%2)==0)
{
return number + " == Even";
}
else
{
return number + " == Odd";
}
}
public void actionPerformed(ActionEvent e)
{
Object source = e.getSource();
if (source == check)
{
numcheck = checknum(numcheck); // numcheck is a textfield use setText()
}
}
}
Message was edited by:
Yannix
@OP: have fun!
your fully functional code:
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class sample1 extends Applet implements ActionListener {
Button check;
TextField numcheck;
private void checknum(int number) {
if ((number%2)==0) {
numcheck.setText(numcheck.getText() + " = even");
} else {
numcheck.setText(numcheck.getText() + " = odd");
}
}
public void init() {
setLayout(null);
setBackground(Color.white);
check= new Button("Check");
numcheck = new TextField("5");
check.setBounds(10,10,100,30);
numcheck.setBounds(10,50,100,30);
add(check);
add(numcheck);
check.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
Object source = e.getSource();
if (source == check) {
checknum(Integer.parseInt(numcheck.getText()));
}
}
}
Message was edited by:
Yannix
