Analyze the following code.

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

public class Test {
public static void main(String[] args) {
JFrame frame = new JFrame("My Frame");
frame. add(new MyDrawing("Welcome to Java!"));
frame. setSize(300, 300);
frame. setDefaultCloseOperation(JFrame. EXIT_ON_CLOSE);
frame. setVisible(true);
frame. setVisible(true);
}
}

class MyDrawing extends JPanel {
String message;

public MyDrawing(String message) {
this. message = message;
}

public void paintcomponent(Graphics g) {
super. paintComponent(g);

g. drawString(message, 20 ,20);
}
}

What happens?