Java Help Again

[kasuwa1235]

Mata Button 2 k add karala ekata Actions daanna oni , same label eke Me code eke Podi aulak tiyenawa mata eka hadala denawada



import javax.swing.*;
import java.awt.event.*;
import java.awt.event.ActionListener.*;


public class swi9 implements ActionListener{
private static void cdemo(){

JFrame frame = new JFrame ("hi");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(600,600,600,600);
frame.getContentPane().setLayout(null);
JButton butt = new JButton("click me");
butt.setBounds(20,20,200,20);
frame.getContentPane().add(butt);

JButton butt2 = new JButton("Click Me2");
butt2.setBounds(25,25,205,25);
frame.getContentPane().add(butt2);

swi9 new1 = new swi9();
new1.label = new JLabel("");
new1.label.setBounds(20,40,200,20);
frame.getContentPane().add(new1.label);

butt.addActionListener(new1);
frame.setVisible(true);

}

public void actionPerformed(ActionEvent e)
{
if(e.getSource()==butt)
label.setText("Hello World");
else
label.setText("Ouchh Cliked");
}

public static void main(String [] args){
SwingUtilities.invokeLater(new Runnable(){
public void run(){
cdemo();
}
});
}
JLabel label;

}



Error eka Attchment eke ati. mata me Code eka a vidiyatama oni

podi waradak aththe eka hadaa ganna hati kiyala dunnoth loku deyak

 

[Captain_Haddock]

Didn't you used an IDE?

 

[kasuwa1235]

Didn't you used an IDE?

Nop thama notepad

 

[Captain_Haddock]

Nop thama notepad

ok.mama hithanne JButton butt = new JButton("click me"); menna meka declare karala thiyenne private class eka athule.meka public declare karala balanna.

 

[Captain_Haddock]

This code will work.....

static JButton buttn = new JButton("click me");

And java class name eka hama welema upper case letter ekakin start karanna.Best practice ekak eka.

 

[MihiCherub]

Command pattern eka neda?
oke JButton butt == null;
udin dala cdemo method eka athuledi

butt = new JButton("click me");
karanna. ethakota hari..