AWT BasicStroke Class


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Introduction

The BasicStroke class states colors in the default sRGB color space or colors in arbitrary color spaces identified by a ColorSpace.

Class declaration

Following is the declaration for java.awt.BasicStroke class:

public class BasicStroke
   extends Object
      implements Stroke

Field

Following are the fields for java.awt.geom.Arc2D class:

  • static int CAP_BUTT -- Ends unclosed subpaths and dash segments with no added decoration.

  • static int CAP_ROUND -- Ends unclosed subpaths and dash segments with a round decoration that has a radius equal to half of the width of the pen.

  • static int CAP_SQUARE -- Ends unclosed subpaths and dash segments with a square projection that extends beyond the end of the segment to a distance equal to half of the line width.

  • static int JOIN_BEVEL -- Joins path segments by connecting the outer corners of their wide outlines with a straight segment.

  • static int JOIN_MITER -- Joins path segments by extending their outside edges until they meet.

  • static int JOIN_ROUND -- Joins path segments by rounding off the corner at a radius of half the line width.

Class constructors

S.N.Constructor & Description
1

BasicStroke()

Constructs a new BasicStroke with defaults for all attributes.

2

BasicStroke(float width)

Constructs a solid BasicStroke with the specified line width and with default values for the cap and join styles.

3

BasicStroke(float width, int cap, int join)

Constructs a solid BasicStroke with the specified attributes.

4

BasicStroke(float width, int cap, int join, float miterlimit)

Constructs a solid BasicStroke with the specified attributes.

5

BasicStroke(float width, int cap, int join, float miterlimit, float[] dash, float dash_phase)

Constructs a new BasicStroke with the specified attributes.

Class methods

S.N.Method & Description
1

Shape createStrokedShape(Shape s)

Returns a Shape whose interior defines the stroked outline of a specified Shape.

2

boolean equals(Object obj)

Tests if a specified object is equal to this BasicStroke by first testing if it is a BasicStroke and then comparing its width, join, cap, miter limit, dash, and dash phase attributes with those of this BasicStroke.

3

float[] getDashArray()

Returns the array representing the lengths of the dash segments.

4

float getDashPhase()

Returns the current dash phase.

5

int getEndCap()

Returns the end cap style.

6

int getLineJoin()

Returns the line join style.

7

float getLineWidth()

Returns the line width.

8

float getMiterLimit()

Returns the limit of miter joins.

9

int hashCode()

Returns the hashcode for this stroke.

Methods inherited

This class inherits methods from the following classes:

  • java.lang.Object

BasicStroke Example

Create the following java program using any editor of your choice in say D:/ > AWT > com > tutorialspoint > gui >

AWTGraphicsDemo.java
package com.tutorialspoint.gui;

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

public class AWTGraphicsDemo extends Frame {
       
   public AWTGraphicsDemo(){
      super("Java AWT Examples");
      prepareGUI();
   }

   public static void main(String[] args){
      AWTGraphicsDemo  awtGraphicsDemo = new AWTGraphicsDemo();  
      awtGraphicsDemo.setVisible(true);
   }

   private void prepareGUI(){
      setSize(400,400);
      addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      }); 
   }    

   @Override
   public void paint(Graphics g) {
      Graphics2D g2 = (Graphics2D)g;        
      g2.setStroke(new BasicStroke(3.0f));
      g2.setPaint(Color.blue);

      Rectangle2D shape = new Rectangle2D.Float();
      shape.setFrame(100, 150, 200,100);
      g2.draw(shape);

      Rectangle2D shape1 = new Rectangle2D.Float();
      shape1.setFrame(110, 160, 180,80);
      g2.setStroke(new BasicStroke(1.0f));
   
      g2.draw(shape1);
      Font plainFont = new Font("Serif", Font.PLAIN, 24);        
      g2.setFont(plainFont);
      g2.setColor(Color.DARK_GRAY);
      g2.drawString("TutorialsPoint", 130, 200);
   }
}

Compile the program using command prompt. Go to D:/ > AWT and type the following command.

D:\AWT>javac com\tutorialspoint\gui\AwtGraphicsDemo.java

If no error comes that means compilation is successful. Run the program using following command.

D:\AWT>java com.tutorialspoint.gui.AwtGraphicsDemo

Verify the following output

AWT BasicStroke
awt_graphics.htm

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