The Java2D API provides advanced two-dimensional graphics capabilities for programmers who require detailed and complex graphical manipulations. The API includes features for processing line art, text and images in packages java.awt, java.awt.image, java.awt.color, java.awt.font. java.awt.geom, java.awt.print and java.awt.image.renderable.

Drawing with the Java2D API is accomplished by using an instance of class Graphics2D (package java.awt). Class Graphics2D is a sub-class of class Graphics. In fact, the actual object used to draw in every

paint method is a Graphics2D object, which can be passed to the paint() method and accessed using the super-class Graphics reference, that is, g. To access the Graphics2D capabilities, the Graphics reference passed to paint to a Graphics2D reference must be downcast. To access the additional capabilities of Graphics2D while working with the Graphics class, the Graphics reference (g) must be type-cast to a Graphics2D reference by passing paint Component into Graphics2D. The syntax of casting Graphics2D to Graphics is the following:

                                     Graphics2D g2d = (Graphics2D ) g;

The variable map is which allows you to assign design attributes of the object type source AttributedString. Through this variable may change any aspect of the font . TextAttribute example shown the code as follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import java.awt.RenderingHints; 
 import java.awt.font.FontRenderContext; 
 import java.awt.font.TextLayout; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 import java.awt.Shape; 
 import java.awt.font.*; 
 import java.text.*; 
 import javax.swing.*; 
 public class DrawTextAttributeExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawTextAttribute  = new Frame("Draw TextAttribute  Example"); 
 DrawTextAttribute .setSize(350, 250); 
 Applet DrawTextAttributeExample = new DrawTextAttributeExample(); 
 DrawTextAttribute .add(DrawTextAttributeExample); 
 DrawTextAttribute .setVisible(true); 
 DrawTextAttribute .addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("TextAttribute in Java Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); 
                 G2D.setRenderingHint(RenderingHints.KEY_RENDERING,RenderingHints.VALUE_RENDER_QUALITY); 
                 G2D.setColor(Color.blue); 
                 String str = "Dinesh Thakur"; 
                 AttributedString AttributedStr = new AttributedString (str); 
                 Font font = new Font("Arial", Font.ITALIC, 15); 
                 AttributedStr.addAttribute(TextAttribute.FONT,font,0,str.length()-2); 
                 Image image = (new ImageIcon("DineshThakur.jpg")).getImage(); 
                 ImageGraphicAttribute ImageGA = new ImageGraphicAttribute (image,(int)CENTER_ALIGNMENT); 
                 AttributedStr.addAttribute(TextAttribute.CHAR_REPLACEMENT,ImageGA,1,2); 
                 AttributedStr.addAttribute(TextAttribute.CHAR_REPLACEMENT,ImageGA,8,9); 
                 font = new Font("Times", Font.ITALIC, 24); 
                 AttributedStr.addAttribute(TextAttribute.FONT,font,3,9); 
                 AttributedCharacterIterator AttributedCI = AttributedStr.getIterator(); 
                 FontRenderContext FontRC = G2D.getFontRenderContext(); 
                TextLayout TextLay = new TextLayout(AttributedCI,FontRC); 
                TextLay.draw(G2D, 80, 70); 
   } 
 } 
 

This code can be seen as built a clipping path with the text area of the word ” Dinesh Thakur ” located in the middle of the window. In the drawn area can be seen as the image is painted behind the chain. As seen, the effect is very colorful and easy to perform.

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import java.awt.RenderingHints; 
 import java.awt.font.FontRenderContext; 
 import java.awt.font.TextLayout; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 import java.awt.Shape; 
 import java.awt.font.*; 
 public class DrawClippingPathExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawClippingPath  = new Frame("Draw ClippingPath  Example"); 
 DrawClippingPath .setSize(350, 250); 
 Applet DrawClippingPathExample = new DrawClippingPathExample(); 
 DrawClippingPath .add(DrawClippingPathExample); 
 DrawClippingPath .setVisible(true); 
 DrawClippingPath .addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Filling a Clipping Path in Java Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 int w = getSize().width; 
                 int h = getSize().height; 
                FontRenderContext FontRC = G2D.getFontRenderContext(); 
                Font font = new Font("Times",Font.BOLD,w/15); 
                String str = new String ("Dinesh Thakur"); 
                TextLayout TextLay = new TextLayout(str,font,FontRC); 
                float sw = (float)TextLay.getBounds().getWidth(); 
                AffineTransform AffineTrans = new AffineTransform(); 
                AffineTrans.setToTranslation(w/2-sw/2,h/1.5); 
                Shape shp = TextLay.getOutline(AffineTrans); 
                G2D.setClip(shp); 
                G2D.setColor(Color.red); 
                G2D.fill(shp.getBounds2D()); 
                G2D.setColor(Color.white); 
                G2D.setStroke(new BasicStroke(2.0f)); 
                for ( double j = shp.getBounds().getY(); 
                j<shp.getBounds2D().getY()+shp.getBounds2D().getHeight(); 
                j=j+4) { 
               Line2D L2D = new Line2D.Double(0.0,j,w,j); 
               G2D.draw(L2D); 
               } 
   } 
 } 
 

This code can be seen as built a clipping path with the content of the text area of the word “Java ” located in the middle of the window.In the drawn area can be seen as the image is painted behind the chain. As seen, the effect is very colorful and easy to perform.

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import java.awt.RenderingHints; 
 import java.awt.font.FontRenderContext; 
 import java.awt.font.TextLayout; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 import java.awt.Shape; 
 import javax.swing.*; 
 public class DrawTextEffectExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawTextEffect  = new Frame("Draw TextEffect  Example"); 
 DrawTextEffect .setSize(350, 250); 
 Applet DrawTextEffectExample = new DrawTextEffectExample(); 
 DrawTextEffect .add(DrawTextEffectExample); 
 DrawTextEffect .setVisible(true); 
 DrawTextEffect .addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Text Effect in Java Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 int w = getSize().width; 
                 int h = getSize().height; 
                 Image image = (new ImageIcon("Canada.jpg")).getImage(); 
                 FontRenderContext FontRC = G2D.getFontRenderContext(); 
                 Font font = new Font("Times",Font.BOLD,100); 
                 TextLayout TextLay = new TextLayout("Java",font,FontRC); 
                 float sw = (float)TextLay.getBounds().getWidth(); 
                 AffineTransform AffineTran = new AffineTransform(); 
                 AffineTran.setToTranslation(w/2-sw/2,h*5/8); 
                 Shape s = TextLay.getOutline(AffineTran); 
                G2D.setClip(s); 
                G2D.drawImage(image,50,60,this); 
                G2D.setColor(Color.green); 
                G2D.draw(s); 
   } 
 } 
 

With this code we will study how text is drawn on a any image.

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import java.awt.RenderingHints; 
 import java.awt.font.FontRenderContext; 
 import java.awt.font.TextLayout; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 import java.awt.Shape; 
 import javax.swing.*; 
 public class DrawTextonImageExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawTextonImage = new Frame("Draw TextonImage Example"); 
 DrawTextonImage.setSize(350, 250); 
 Applet DrawTextonImageExample = new DrawTextonImageExample(); 
 DrawTextonImage.add(DrawTextonImageExample); 
 DrawTextonImage.setVisible(true); 
 DrawTextonImage.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw text on an Image Java Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 int w = getSize().width; 
                 int h = getSize().height; 
                 Image image = (new ImageIcon("DineshThakur.jpg")).getImage(); 
                 G2D.drawImage(image,140,80,this); 
                 FontRenderContext FontRC = G2D.getFontRenderContext(); 
                 Font font = new Font("Times",Font.BOLD,w/25); 
                 String str = new String ("Dinesh Thakur"); 
                 TextLayout TextL = new TextLayout(str,font,FontRC); 
                 float sw = (float)TextL.getBounds().getWidth(); 
                 AffineTransform AffineTran = new AffineTransform(); 
                 AffineTran.setToTranslation(w/2-sw/2,h*3/8); 
                 G2D.setColor(Color.green); 
                Shape shape = TextL.getOutline(AffineTran); 
                G2D.draw(shape); 
                TextL.draw(G2D,w/2-sw/2,h*5/8); 
   } 
 } 
 

A much more powerful mechanism for drawing text is provided  the TextLayout class.This class not only allows you to draw text in a similar way  to as was done be fore but also provides a number of methods that  let youk now what is specific to draw features.

The following tables hows the methods involved in this section:

[Read more…] about TextLayout Java Example

In this example we show how the Set operations going to make a Addition of 2 circles. An example show the code below:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawaddExample extends Applet { 
 public static void main(String[] args) { 
 Frame Drawadd = new Frame("Draw add Example"); 
 Drawadd.setSize(350, 250); 
 Applet DrawaddExample = new DrawaddExample(); 
 Drawadd.add(DrawaddExample); 
 Drawadd.setVisible(true); 
 Drawadd.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw add Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 GradientPaint GPaint = new GradientPaint(50.0f, 50.0f, Color.red,200.0f, 50.0f, Color.green); 
                 G2D.setPaint(GPaint); 
                 Ellipse2D E2D = new Ellipse2D.Double(50.0, 50.0, 80.0, 80.0); 
                 Ellipse2D E2D2 = new Ellipse2D.Double(100.0, 50.0, 80.0, 80.0); 
                 Area area1 = new Area(E2D); 
                 Area area2 = new Area(E2D2); 
                 area1.add(area2); 
                 G2D.fill(area1); 
   } 
 } 
 

In this example we show how the Set operations going to make a Intersection of 2 circles . Intersection examples how the code as follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawintersectExample extends Applet { 
 public static void main(String[] args) { 
 Frame Drawintersect = new Frame("Draw intersect Example"); 
 Drawintersect.setSize(350, 250); 
 Applet DrawintersectExample = new DrawintersectExample(); 
 Drawintersect.add(DrawintersectExample); 
 Drawintersect.setVisible(true); 
 Drawintersect.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw intersect Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 GradientPaint GPaint = new GradientPaint(50.0f, 50.0f, Color.red,200.0f, 50.0f, Color.green); 
                 G2D.setPaint(GPaint); 
                 Ellipse2D E2D = new Ellipse2D.Double(50.0, 50.0, 80.0, 80.0); 
                 Ellipse2D E2D2 = new Ellipse2D.Double(100.0, 50.0, 80.0, 80.0); 
                 Area area1 = new Area(E2D); 
                 Area area2 = new Area(E2D2); 
                 area1.intersect(area2); 
                 G2D.fill(area1); 
   } 
 } 
 

In this example we show how the Set operations going to make a Subtraction of 2 circles . Subtraction examples how the code as follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawsubtractExample extends Applet { 
 public static void main(String[] args) { 
 Frame Drawsubtract = new Frame("Draw subtract Example"); 
 Drawsubtract.setSize(350, 250); 
 Applet DrawsubtractExample = new DrawsubtractExample(); 
 Drawsubtract.add(DrawsubtractExample); 
 Drawsubtract.setVisible(true); 
 Drawsubtract.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw subtract Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 GradientPaint GPaint = new GradientPaint(50.0f, 50.0f, Color.red,200.0f, 50.0f, Color.green); 
                 G2D.setPaint(GPaint); 
                 Ellipse2D E2D = new Ellipse2D.Double(50.0, 50.0, 80.0, 80.0); 
                 Ellipse2D E2D2 = new Ellipse2D.Double(100.0, 50.0, 80.0, 80.0); 
                 Area area1 = new Area(E2D); 
                 Area area2 = new Area(E2D2); 
                 area1.subtract(area2); 
                 G2D.fill(area1); 
   } 
 } 
 

In this example we show how the Set operations going to make a union of 2 circles. Union exclusive (XOR ) examples how the code as follows: [Read more…] about Set operations exclusiveOr Java Example

Another way is to build figures using GeneralPath class, which but also inherits from Shapeisan interface, but a class. This class allows  define a shape by a sequence oflines that can be established through  functions in the following table:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawGeneralPathExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawGeneralPath = new Frame("Draw GeneralPath Example"); 
 DrawGeneralPath.setSize(350, 250); 
 Applet DrawGeneralPathExample = new DrawGeneralPathExample(); 
 DrawGeneralPath.add(DrawGeneralPathExample); 
 DrawGeneralPath.setVisible(true); 
 DrawGeneralPath.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw GeneralPath Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.green); 
                 GeneralPath GPath = new GeneralPath(); 
                 GPath.moveTo(50.0f,50.0f); 
                 GPath.lineTo(100.0f,50.0f); 
                 GPath.curveTo(120.0f,30.0f,120.0f,100.0f,180.0f,125.0f); 
                 GPath.lineTo(50.0f,150.0f); 
                 GPath.closePath(); 
                 G2D.fill(GPath); 
                 G2D.setColor(Color.blue); 
                 G2D.draw(GPath); 
   } 
 } 
 

Point2D class does not draw anything; it is the representation of points Java2D. But yes you can draw shapes from points. Following is at able that lists some of the Constructors and methods of Point2D class:

Drawingan Point2D exampleshownthecodeas follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawPoint2DExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawPoint2D = new Frame("Draw Point2D Example"); 
 DrawPoint2D.setSize(350, 250); 
 Applet DrawPoint2DExample = new DrawPoint2DExample(); 
 DrawPoint2D.add(DrawPoint2DExample); 
 DrawPoint2D.setVisible(true); 
 DrawPoint2D.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw Point2D Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 Point2D P2D = new Point2D.Float(23.5f, 48.9f); 
                 Point2D P2D2 = new Point2D.Float(158.0f, 173.0f); 
                 Line2D L2D = new Line2D.Float(P2D, P2D2); 
                 G2D.draw(L2D); 
   } 
 } 
 

CubicCurve2D which also shows the segments joining  the ends with the points control and the set together. An example of use appears in the following code, which also have highlighted the four reference points. The result can be seen in CubicCurve2D Java Example.

Following is a table that lists some of the Constructors and methods of CubicCurve2D class:

Drawingan CubicCurve exampleshownthecodeas follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawCubicCurve2DExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawCubicCurve2D = new Frame("Draw CubicCurve2D Example"); 
 DrawCubicCurve2D.setSize(350, 250); 
 Applet DrawCubicCurve2DExample = new DrawCubicCurve2DExample(); 
 DrawCubicCurve2D.add(DrawCubicCurve2DExample); 
 DrawCubicCurve2D.setVisible(true); 
 DrawCubicCurve2D.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw CubicCurve2D Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.blue); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 CubicCurve2D CC2D = new CubicCurve2D.Float(40.0f, 60.0f, 60.0f, 120.0f, 140.0f, 130.0f, 150.0f, 210.0f); 
                 G2D.draw(CC2D); 
                 G2D.setColor(Color.blue); 
                 G2D.draw(new Rectangle2D.Float(40.0f, 60.0f, 1.0f, 1.0f)); 
                 G2D.draw(new Rectangle2D.Float(60.0f, 120.0f, 1.0f, 1.0f)); 
                 G2D.draw(new Rectangle2D.Float(140.0f, 130.0f, 1.0f, 1.0f)); 
                 G2D.draw(new Rectangle2D.Float(150.0f, 210.0f, 1.0f, 1.0f)); 
   } 
 } 
 

The QuadCurve2D class lets build a curved segment based on mathematical equations. The curve generated is also called curve quadratic Bezier and based on a very simple idea is to establish two points that define the ends of a curved segment and a third point, called checkpoint that allows “stretching” more or less the curvature of the segment.

Following is at able that lists some of the Constructors and methods of QuadCurve2D class:

Drawingan Curve exampleshownthecodeas follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawQuadCurve2DExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawQuadCurve2D = new Frame("Draw QuadCurve2D Example"); 
 DrawQuadCurve2D.setSize(350, 250); 
 Applet DrawQuadCurve2DExample = new DrawQuadCurve2DExample(); 
 DrawQuadCurve2D.add(DrawQuadCurve2DExample); 
 DrawQuadCurve2D.setVisible(true); 
 DrawQuadCurve2D.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw QuadCurve2D Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.green); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 QuadCurve2D QC2D = new QuadCurve2D.Float(40.0f, 70.0f, 40.0f, 170.0f, 190.0f, 220.0f); 
                 G2D.draw(QC2D); 
                 G2D.setColor(Color.red); 
                 G2D.draw(new Rectangle2D.Float(40.0f, 70.0f, 1.0f, 1.0f)); 
                 G2D.draw(new Rectangle2D.Float(40.0f, 170.0f, 1.0f, 1.0f)); 
                 G2D.draw(new Rectangle2D.Float(190.0f, 220.0f, 1.0f, 1.0f)); 
   } 
 } 
 

The class allows Arc2D draw an arc of an ellipse or a circle. For this, first the rectangle that contains the ellipse whose arc you want to draw is defined ; then assuming that the center of the rectangle sets the point (0,0) of a Cartesian coordinate axis , the angles start and end are specified the arc in degrees . Finally , indicate whether you want to close the bow joining ends or not. This closure can be of three types :

• Arc2D.OPEN : the arc is open .
• Arc2D.CHORD : the ends of the arch are connected by a line segment .
• Arc2D.PIE : Each end of the arc joined by a segment with point ( 0 , 0 ) of the coordinate axis .
The following code draws a rectangle reference . Then, and within a rectangle equal to the reference , an arc that starts in the draw angle 0 ° and ends at 135 . Finally the arc closes like a piece of a pie chart ( Arc2D.PIE ) .

Following isatablethat listssome of the Constructors and methods of Ellipse2Dclass:

Drawinganarcexampleshownthecodeas follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawArc2DExample extends Applet { 
 public static void main(String[] args) { 
 Frame DrawArc2D = new Frame("Draw Arc2D Example"); 
 DrawArc2D.setSize(350, 250); 
 Applet DrawArc2DExample = new DrawArc2DExample(); 
 DrawArc2D.add(DrawArc2DExample); 
 DrawArc2D.setVisible(true); 
 DrawArc2D.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw Arc2D Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.blue); 
                 G2D.setStroke(new BasicStroke(1.0f)); 
                 Rectangle2D Rect2D = new Rectangle2D.Float(100.0f, 75.0f, 50.0f, 100.0f); 
                 G2D.draw(Rect2D); 
                 G2D.setColor(Color.green); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 Arc2D Ar2D = new Arc2D.Float(100.0f, 75.0f, 50.0f, 100.0f, 0.0f, 135.0f, Arc2D.PIE); 
                G2D.draw(Ar2D); 
   } 
 } 
 

The ellipses or ovals are drawn by Ellipse2D class.This requires you defined to be a rectangle enclosing the boundaries between the ellipse.There the concept of a circle, so that it must be obtained by an ellipse enclosed in a square.

In Ellipse2D Java Example we are using package java.awt.geom.*. Following is a table that lists some of the Constructors and methods of Ellipse2D class:

Drawinganellipseexampleshownthecodeas follows:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class Draw2DEllipseExample extends Applet { 
 public static void main(String[] args) { 
 Frame Draw2DEllipse = new Frame("Draw 2DEllipse Example"); 
 Draw2DEllipse.setSize(350, 250); 
 Applet Draw2DEllipseExample = new Draw2DEllipseExample(); 
 Draw2DEllipse.add(Draw2DEllipseExample); 
 Draw2DEllipse.setVisible(true); 
 Draw2DEllipse.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw Ellipse2D Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.orange); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 Ellipse2D E2D = new Ellipse2D.Float(100.0f,75.0f,50.0f,100.0f); 
                 G2D.draw(E2D); 
   } 
 } 
 

Draw a straight line is one of the easiest things to do with Java2D. This is achieved through the Line2D class, whose constructor accepts four parameters, namely the coordinates of the start and end respectively.

In Line2D Java Example we are using package java.awt.geom.*. This class provides a line segment in (x, y) coordinate space. Following is at able that lists some of the Constructors and methods of Line2D class:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class Draw2DLineExample extends Applet { 
 public static void main(String[] args) { 
 Frame Draw2DLine = new Frame("Draw Line2D Example"); 
 Draw2DLine.setSize(350, 250); 
 Applet Draw2DLineExample = new Draw2DLineExample(); 
 Draw2DLine.add(Draw2DLineExample); 
 Draw2DLine.setVisible(true); 
 Draw2DLine.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw 2D Line Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.pink); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 Line2D L2D = new Line2D.Float(50.0f, 50.0f, 200.0f, 200.0f); 
                 G2D.draw(L2D); 
   } 
 } 
 

The class that is used to draw rectangles and squares is the Rectangle2D. The constructor specifies the first two parameters of the corner position upper left relative to the coordinate system of the window.

These four parameters can be specified using float or double values, using for this builders Rectangle2D. Float() and Rectangle2D. Double() respectively.This possibility to construct geometric figures using coordinates in float or double is a constant that is repeated in all the shapes. A rectangle can use the fill method of the java.awt.Graphics2D class. Following is at able that lists some of the Constructors and methods of Rectangle2D class:

import java.applet.Applet; 
 import java.awt.*; 
 import java.awt.event.*; 
 import java.awt.Color; 
 import java.awt.Graphics;  
 import javax.swing.*; 
 import java.awt.geom.*; 
 import java.awt.image.*; 
 public class DrawRectangle2DExample extends Applet { 
 public static void main(String[] args) { 
 Frame Draw2DRect = new Frame("Draw 2D Rectangles Example"); 
 Draw2DRect.setSize(350, 250); 
 Applet DrawRectangle2DExample = new DrawRectangle2DExample(); 
 Draw2DRect.add(DrawRectangle2DExample); 
 Draw2DRect.setVisible(true); 
 Draw2DRect.addWindowListener(new WindowAdapter() { 
 public void windowClosing(WindowEvent e) { 
 System.exit(0); 
       } 
     }); 
   } 
   public void paint(Graphics g) {  
     g.setColor(Color.blue); 
     g.setFont(new Font("Arial",Font.BOLD,14)); 
     g.drawString("Draw 2D Rectangles Example", 50, 40); 
     g.setFont(new Font("Arial",Font.BOLD,10)); 
     g.drawString("http://ecomputernotes.com", 200, 205);  
                 super.paint(g); 
                 Graphics2D G2D = (Graphics2D)g; 
                 G2D.setColor(Color.blue); 
                 G2D.setStroke(new BasicStroke(3.0f)); 
                 Rectangle2D Rect2D = new Rectangle2D.Float(100.0f, 75.0f, 50.0f, 100.0f); 
                 G2D.draw(Rect2D); 
   } 
 }