import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JPanel{
String s = "Vertical text";
int v;
public void paint(Graphics g) {
v = g.getFontMetrics(getFont()).getHeight() + 1;
int j = 0;
int k = s.length();
while (j < k + 1) {
if (j == k)
g.drawString(s.substring(j), 10, 10 + (j * v));
else
g.drawString(s.substring(j, j + 1), 10, 10 + (j * v));
j++;
}
}
public static void main(String[] a){
JFrame f = new JFrame();
f.add(new Main());
f.setSize(300,300);
f.setVisible(true);
}
}