import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JPanel {
public void paint(Graphics g) {
g.fillRect(0, 0, 20, 20);
Graphics2D g2 = (Graphics2D) g;
g2.translate(50, 50);
g2.rotate(30.0 * Math.PI / 180.0);
g2.scale(2.0, 2.0);
g.setColor(Color.red);
g.fillRect(0, 0, 20, 20);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.getContentPane().add(new MainClass());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200, 200);
frame.setVisible(true);
}
}