Swing , would like to print hello inside of the frame, how?

Question

i would like to print hello inside of the frame, how can i do that?
import java.awt.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JComponent;
import java.awt.Toolkit;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class Main extends JPanel
implements ActionListener {
JButton button;
public Main() {
super(new BorderLayout());
button = new JButton("Click Me");
button.setPreferredSize(new Dimension(200, 80));
add(button, BorderLayout.CENTER);
button.addActionListener(this);
public void actionPerformed(ActionEvent e) {
     System.out.println("hello");
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("welcome");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
JComponent newContentPane = new Main();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}

Answer 1

Recommended lessons in this context: [Using Layout Managers|http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html] and [Painting in AWT and Swing|http://java.sun.com/products/jfc/tsc/articles/painting/]
If the second lesson is a little heavy, look at this light version: [Performing Custom Painting|http://java.sun.com/docs/books/tutorial/uiswing/painting/index.html]
Edited by: Andre_Uhres on Aug 24, 2008 8:34 AM