Java Tutorial/2D Graphics/Shape

Add Round Rectangle, Ellipse Arc to a shape

   <source lang="java">

import java.awt.BasicStroke; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.geom.Arc2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; import java.util.ArrayList; import javax.swing.JComponent; import javax.swing.JFrame; public class ShapeMaker extends JFrame {

 public static void main(String[] args) {
   new ShapeMaker();
 }
 public ShapeMaker() {
   this.setSize(300, 300);
   this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   this.add(new PaintSurface(), BorderLayout.CENTER);
   this.setVisible(true);
 }
 private class PaintSurface extends JComponent {
   ArrayList<Shape> shapes = new ArrayList<Shape>();
   Point startDrag, endDrag;
   Shape found = null;
   public PaintSurface() {
     Shape s = new Rectangle2D.Float(10, 10, 60, 80);
     shapes.add(s);
     s = new RoundRectangle2D.Float(110, 10, 80, 80, 10, 10);
     shapes.add(s);
     s = new Ellipse2D.Float(10, 110, 80, 80);
     shapes.add(s);

     s = new Arc2D.Float(10, 210, 80, 80, 90, 90, Arc2D.OPEN);
     shapes.add(s);
     s = new Arc2D.Float(110, 210, 80, 80, 0, 180, Arc2D.CHORD);
     shapes.add(s);
     s = new Arc2D.Float(210, 210, 80, 80, 45, 90, Arc2D.PIE);
     shapes.add(s);
   }
   public void paint(Graphics g) {
     Graphics2D g2 = (Graphics2D) g;
     g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
     RenderingHints.VALUE_ANTIALIAS_ON);
     g2.setPaint(Color.LIGHT_GRAY);
     for (int i = 0; i < getSize().width; i += 10)
       g2.draw(new Line2D.Float(i, 0, i, getSize().height));
     for (int i = 0; i < getSize().height; i += 10)
       g2.draw(new Line2D.Float(0, i, getSize().width, i));
     g2.setColor(Color.BLACK);
     g2.setStroke(new BasicStroke(2));
     for (Shape s : shapes)
       g2.draw(s);
   }
 }

}</source>

Combining Shapes

   <source lang="java">

import java.awt.Rectangle; import java.awt.geom.Area; public class BasicShapes {

 public static void main(String[] args) {
   Area shape = new Area(new Rectangle(1, 1, 1, 1));
   shape.add(new Area(new Rectangle(1, 1, 1, 1)));
   shape.subtract(new Area(new Rectangle(1, 1, 1, 1)));
   shape.intersect(new Area(new Rectangle(1, 1, 1, 1)));
   shape.exclusiveOr(new Area(new Rectangle(1, 1, 1, 1)));
 }

}</source>

Creates a diagonal cross shape.

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Shape; import java.awt.geom.GeneralPath; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Creates a diagonal cross shape.
  *
  * @param l  the length of each "arm".
  * @param t  the thickness.
  *
  * @return A diagonal cross shape.
  */
 public static Shape createRegularCross(final float l, final float t) {
     final GeneralPath p0 = new GeneralPath();
     p0.moveTo(-l, t);
     p0.lineTo(-t, t);
     p0.lineTo(-t, l);
     p0.lineTo(t, l);
     p0.lineTo(t, t);
     p0.lineTo(l, t);
     p0.lineTo(l, -t);
     p0.lineTo(t, -t);
     p0.lineTo(t, -l);
     p0.lineTo(-t, -l);
     p0.lineTo(-t, -t);
     p0.lineTo(-l, -t);
     p0.closePath();
     return p0;
 }

}</source>

Creates a diamond shape.

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Shape; import java.awt.geom.GeneralPath; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Creates a diamond shape.
  *
  * @param s  the size factor (equal to half the height of the diamond).
  *
  * @return A diamond shape.
  */
 public static Shape createDiamond(final float s) {
     final GeneralPath p0 = new GeneralPath();
     p0.moveTo(0.0f, -s);
     p0.lineTo(s, 0.0f);
     p0.lineTo(0.0f, s);
     p0.lineTo(-s, 0.0f);
     p0.closePath();
     return p0;
 }

}</source>

Creates and returns a translated shape.

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Shape; import java.awt.geom.AffineTransform; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Creates and returns a translated shape.
  *
  * @param shape  the shape (null not permitted).
  * @param transX  the x translation (in Java2D space).
  * @param transY  the y translation (in Java2D space).
  *
  * @return The translated shape.
  */
 public static Shape createTranslatedShape(final Shape shape,
                                           final double transX,
                                           final double transY) {
     if (shape == null) {
         throw new IllegalArgumentException("Null "shape" argument.");
     }
     final AffineTransform transform = AffineTransform.getTranslateInstance(
             transX, transY);
     return transform.createTransformedShape(shape);
 }

}</source>

Creates a triangle shape that points downwards.

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Shape; import java.awt.geom.GeneralPath; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Creates a triangle shape that points downwards.
  *
  * @param s  the size factor (equal to half the height of the triangle).
  *
  * @return A triangle shape.
  */
 public static Shape createDownTriangle(final float s) {
     final GeneralPath p0 = new GeneralPath();
     p0.moveTo(0.0f, s);
     p0.lineTo(s, -s);
     p0.lineTo(-s, -s);
     p0.closePath();
     return p0;
 }

}</source>

Creates a triangle shape that points upwards.

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Shape; import java.awt.geom.GeneralPath; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Creates a triangle shape that points upwards.
  *
  * @param s  the size factor (equal to half the height of the triangle).
  *
  * @return A triangle shape.
  */
 public static Shape createUpTriangle(final float s) {
     final GeneralPath p0 = new GeneralPath();
     p0.moveTo(0.0f, -s);
     p0.lineTo(s, s);
     p0.lineTo(-s, s);
     p0.closePath();
     return p0;
 }

}</source>

Creating a Shape Using Lines and Curves

   <source lang="java">

import java.awt.geom.GeneralPath; public class BasicShapes {

 public static void main(String[] args) {
   GeneralPath shape = new GeneralPath();
   shape.moveTo(1, 1);
   shape.lineTo(2, 2);
   shape.quadTo(3, 3, 4, 4);
   shape.curveTo(5, 5, 6, 6, 7, 7);
   shape.closePath();
 }

}</source>

Creating Basic Shapes

   <source lang="java">

import java.awt.Shape; import java.awt.geom.Arc2D; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; public class BasicShapes {

 public static void main(String[] args) {
   int x1 = 1, x2 = 2, w = 3, h = 4, x = 5, y = 6, y1 = 1, y2 = 2, start = 3;
   Shape line = new Line2D.Float(x1, y1, x2, y2);
   Shape arc = new Arc2D.Float(x, y, w, h, start, 1, 1);
   Shape oval = new Ellipse2D.Float(x, y, w, h);
   Shape rectangle = new Rectangle2D.Float(x, y, w, h);
   Shape roundRectangle = new RoundRectangle2D.Float(x, y, w, h, 1, 2);
 }

}</source>

Draws a shape with the specified rotation about (x, y).

   <source lang="java">

/*

* JCommon : a free general purpose class library for the Java(tm) platform
* 
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info:  http://www.jfree.org/jcommon/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------
* ShapeUtilities.java
* -------------------
* (C)opyright 2003-2008, by Object Refinery Limited and Contributors.
*
* Original Author:  David Gilbert (for Object Refinery Limited);
* Contributor(s):   -;
*
* $Id: ShapeUtilities.java,v 1.18 2008/06/02 06:58:28 mungady Exp $
*
* Changes
* -------
* 13-Aug-2003 : Version 1 (DG);
* 16-Mar-2004 : Moved rotateShape() from RefineryUtilities.java to here (DG);
* 13-May-2004 : Added new shape creation methods (DG);
* 30-Sep-2004 : Added createLineRegion() method (DG);
*               Moved drawRotatedShape() method from RefineryUtilities class
*               to this class (DG);
* 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG);
* 26-Oct-2004 : Added a method to test the equality of two Line2D
*               instances (DG);
* 10-Nov-2004 : Added new translateShape() and equal(Ellipse2D, Ellipse2D)
*               methods (DG);
* 11-Nov-2004 : Renamed translateShape() --> createTranslatedShape() (DG);
* 07-Jan-2005 : Minor Javadoc fix (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 21-Jan-2005 : Modified return type of RectangleAnchor.coordinates()
*               method (DG);
* 22-Feb-2005 : Added equality tests for Arc2D and GeneralPath (DG);
* 16-Mar-2005 : Fixed bug where equal(Shape, Shape) fails for two Polygon
*               instances (DG);
* 01-Jun-2008 : Fixed bug in equal(GeneralPath, GeneralPath) method (DG);
*
*/

import java.awt.Graphics2D; import java.awt.Shape; import java.awt.geom.AffineTransform; /**

* Utility methods for {@link Shape} objects.
*
* @author David Gilbert
*/

public class Main {

 /**
  * Draws a shape with the specified rotation about (x, y).
  *
  * @param g2  the graphics device (null not permitted).
  * @param shape  the shape (null not permitted).
  * @param angle  the angle (in radians).
  * @param x  the x coordinate for the rotation point.
  * @param y  the y coordinate for the rotation point.
  */
 public static void drawRotatedShape(final Graphics2D g2, final Shape shape,
                                     final double angle,
                                     final float x, final float y) {
     final AffineTransform saved = g2.getTransform();
     final AffineTransform rotate = AffineTransform.getRotateInstance(
             angle, x, y);
     g2.transform(rotate);
     g2.draw(shape);
     g2.setTransform(saved);
 }

}</source>

GlyphVector.getNumGlyphs()

   <source lang="java">

import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.font.FontRenderContext; import java.awt.font.GlyphVector; import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import javax.swing.JFrame; import javax.swing.JPanel; public class RotatedText extends JPanel {

 public void paint(Graphics g) {
   Graphics2D g2d = (Graphics2D) g;
   g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
   String s = "111111111111111111111111111111";
   Font font = new Font("Courier", Font.PLAIN, 12);
   g2d.translate(20, 20);
   FontRenderContext frc = g2d.getFontRenderContext();
   GlyphVector gv = font.createGlyphVector(frc, s);
   int length = gv.getNumGlyphs();
   System.out.println(length);
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame("Rotated text");
   frame.add(new RotatedText());
   frame.setSize(400, 300);
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setLocationRelativeTo(null);
   frame.setVisible(true);
 }

}</source>

Resize a shape

   <source lang="java">

import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Point; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.geom.Rectangle2D; import javax.swing.JFrame; import javax.swing.JPanel; public class ResizeRectangle extends JPanel {

 private int SIZE = 8;
 private Rectangle2D[] points = { new Rectangle2D.Double(50, 50,SIZE, SIZE), new Rectangle2D.Double(150, 100,SIZE, SIZE) };
 Rectangle2D s = new Rectangle2D.Double();
 ShapeResizeHandler ada = new ShapeResizeHandler();
 public ResizeRectangle() {
   addMouseListener(ada);
   addMouseMotionListener(ada);
 }
 public void paintComponent(Graphics g) {
   super.paintComponent(g);
   Graphics2D g2 = (Graphics2D) g;
   for (int i = 0; i < points.length; i++) {
     g2.fill(points[i]);
   }
   s.setRect(points[0].getCenterX(), points[0].getCenterY(),
       Math.abs(points[1].getCenterX()-points[0].getCenterX()),
       Math.abs(points[1].getCenterY()- points[0].getCenterY()));
   g2.draw(s);
 }
 class ShapeResizeHandler extends MouseAdapter {
   Rectangle2D r = new Rectangle2D.Double(0,0,SIZE,SIZE);
   private int pos = -1;
   public void mousePressed(MouseEvent event) {
     Point p = event.getPoint();
     for (int i = 0; i < points.length; i++) {
       if (points[i].contains(p)) {
         pos = i;
         return;
       }
     }
   }
   public void mouseReleased(MouseEvent event) {
     pos = -1;
   }
   public void mouseDragged(MouseEvent event) {
     if (pos == -1)
       return;
     points[pos].setRect(event.getPoint().x,event.getPoint().y,points[pos].getWidth(),
         points[pos].getHeight());
     repaint();
   }
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame("Resize Rectangle");
   frame.add(new ResizeRectangle());
   frame.setSize(300, 300);
   frame.setLocationRelativeTo(null);
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setVisible(true);
 }

}</source>

Rotating a Shape

   <source lang="java">

import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {

 public static void main(String[] args) {
   AffineTransform tx = new AffineTransform();
   tx.rotate(0.5);
   Rectangle shape = new Rectangle(1, 1, 1, 1);
   Shape newShape = tx.createTransformedShape(shape);
 }

}</source>

Scaling a Shape

   <source lang="java">

import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {

 public static void main(String[] args) {
   AffineTransform tx = new AffineTransform();
   tx.scale(1, 1);
   Rectangle shape = new Rectangle(1, 1, 1, 1);
   Shape newShape = tx.createTransformedShape(shape);
 }

}</source>

Shearing a Shape

   <source lang="java">

import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {

 public static void main(String[] args) {
   AffineTransform tx = new AffineTransform();
   tx.shear(1, 1);
   Rectangle shape = new Rectangle(1, 1, 1, 1);
   Shape newShape = tx.createTransformedShape(shape);
 }

}</source>

Translating a Shape

   <source lang="java">

import java.awt.Rectangle; import java.awt.Shape; import java.awt.geom.AffineTransform; public class BasicShapes {

 public static void main(String[] args) {
   AffineTransform tx = new AffineTransform();
   tx.translate(1, 10);
   Rectangle shape = new Rectangle(1, 1, 1, 1);
   Shape newShape = tx.createTransformedShape(shape);
 }

}</source>