JDialog & panels

macam mana nak tulis coding yang betul bagi JDialog & panel..
dah cube buat, tp xkuar output.. javascript:emoticonp('')

public class SJDialog extends JApplet
{

public void init()
{
Container pane=getContentPane();
pane.setBackground(Color.white);
pane.setLayout(new FlowLayout());

Label lb1=new Label("WELCOME TO JAVA",Label.CENTER);


JFrame frm=new JFrame("Java Swing JDialog");

JDialog dialog = new JDialog(frm,"Click a button",true);
dialog.setContentPane(frm);

pane.add(lb1);
pane.add(dialog);
}
}

Code:

public class SJDialog extends JApplet
{

public void init()
{
Container pane=getContentPane();
pane.setBackground(Color.white);
pane.setLayout(new FlowLayout());

Label lb1=new Label("WELCOME TO JAVA",Label.CENTER);


JFrame frm=new JFrame("Java Swing JDialog");

JDialog dialog = new JDialog(frm,"Click a button",true);
dialog.setContentPane(frm);

pane.add(lb1);
pane.add(dialog);
}
}

rasanya bkn Label tu. cb ko tukar jd JLabel.

Code:

Label lb1=new Label("WELCOME TO JAVA",Label.CENTER);

jd cmni

Code:

JLabel lb1=new JLabel("WELCOME TO JAVA",JLabel.CENTER);

code simple utk permulaan >> bt hello world! dgn xda title kat atas

Code:

import javax.swing.JFrame;
import javax.swing.JLabel;

public class heloo extends JFrame {

   public static void main(String args[]) {
      new heloo();
   }
   heloo() {
      JLabel jlbHelloWorld = new JLabel("Hello World");
      add(jlbHelloWorld);
      this.setSize(100, 100);
      // pack();
      setVisible(true);
   }
}

yg ni bt hello world! dgn ada title kat atas

Code:


import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JFrame;

public class JHelloWorld extends JPanel {

   JLabel jlbLabel1;
   public JHelloWorld() {

      jlbLabel1 = new JLabel("Hello World!");

      // letakkan label tu kat tengah2
      jlbLabel1.setHorizontalTextPosition(JLabel.CENTER);
      // letakkn Label di atas frame
      add(jlbLabel);

   }
   public static void main(String[] args) {
      JFrame frame = new JFrame("Title utk jFrame");
      frame.addWindowListener(new WindowAdapter() {

         public void windowClosing(WindowEvent e) {
            System.exit(0);
         }
      });
      frame.setContentPane(new JHelloWorld());
      frame.pack();
      frame.setVisible(true);
   }
}

**suma code x kena test. sori~