Java tutorial
import java.awt.Color; import java.awt.FontMetrics; import java.awt.Graphics; import javax.swing.JComponent; import javax.swing.JFrame; public class Main { public static void main(String args[]) { JFrame f = new JFrame(); f.add(new JComponent() { public void paintComponent(Graphics g) { // Some parameters. String text = "Some Label"; int centerX = 150, centerY = 100; int ovalWidth = 200, ovalHeight = 100; // Draw oval g.setColor(Color.BLUE); g.fillOval(centerX - ovalWidth / 2, centerY - ovalHeight / 2, ovalWidth, ovalHeight); // Draw centered text FontMetrics fm = g.getFontMetrics(); double textWidth = fm.getStringBounds(text, g).getWidth(); g.setColor(Color.WHITE); g.drawString(text, (int) (centerX - textWidth / 2), (int) (centerY + fm.getMaxAscent() / 2)); } }); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setSize(300, 300); f.setVisible(true); } }