Java Swing Tutorial - Java Graphics2D.rotate(double theta)

Syntax

Graphics2D.rotate(double theta) has the following syntax.

public abstract void rotate(double theta)

Example

In the following code shows how to use Graphics2D.rotate(double theta) method.

/*from w ww  .  jav a 2s  .com*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main 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.add(new Main());
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(20, 20, 500, 500);
    frame.setVisible(true);
  }
}