Swing program output

Question

i pretend that the output (string) come in side a window, and not only on outpt of netbeans,
how can i do it?
import javax.swing.*;
import java.awt.event.*;
public class Main{
JFrame frame;
public static void main(String[] args){
Main db = new Main();
public Main(){
frame = new JFrame("Show Message Dialog");
JButton button = new JButton("Click Me");
button.addActionListener(new MyAction());
frame.add(button);
frame.setSize(400, 400);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
public class MyAction implements ActionListener{
public void actionPerformed(ActionEvent e){
//JOptionPane.showMessageDialog(frame,"hello :)");
String s=" Welcome ";
//Displays the Actual String declared above
System.out.println("Actual String="+s);
//Returns a hashcode for the string s.
System.out.println(" Hash Code of String s is="+s.hashCode());
System.out.println("");
String vazia="";
System.out.println("tamanho da string"+vazia.length());
}

Answer 1

I think a JOptionPane is what you're looking for.