Set font before drawing text in Java

import java.awt.Font;
import java.awt.Graphics;
//from   w  w  w .j a  va2s. c  o  m
import javax.swing.JComponent;
import javax.swing.JFrame;

class MyCanvas extends JComponent {
  public void paint(Graphics g) {

    Font font = new Font(Font.SERIF, Font.PLAIN, 24);
    g.setFont(font);
    String text = "java2s.com";
    g.drawString(text, 45, 30);
  }
}

public class Main {
  public static void main(String[] a) {
    JFrame window = new JFrame();
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setBounds(30, 30, 450, 450);
    window.getContentPane().add(new MyCanvas());
    window.setVisible(true);
  }
}