Java Tutorial/2D Graphics/Stroke

A dashed stroke

import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class BasicDraw {
  public static void main(String[] args) {
    new BasicDraw();
  }
  BasicDraw() {
    JFrame frame = new JFrame();
    frame.add(new MyComponent());
    frame.setSize(300, 300);
    frame.setVisible(true);
  }
}
class MyComponent extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;
    float strokeThickness = 5.0f;
    float miterLimit = 10f;
    float[] dashPattern = { 10f };
    float dashPhase = 5f;
    BasicStroke stroke = new BasicStroke(strokeThickness, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER,
        miterLimit, dashPattern, dashPhase);
    g2d.setStroke(stroke);
    g2d.draw(new Rectangle(20,20,200,200));
  }
}

Changing the Thickness of the Stroking Pen

import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class BasicDraw {
  public static void main(String[] args) {
    new BasicDraw();
  }
  BasicDraw() {
    JFrame frame = new JFrame();
    frame.add(new MyComponent());
    frame.setSize(300, 300);
    frame.setVisible(true);
  }
}
class MyComponent extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;
    float strokeThickness = 5.0f;
    BasicStroke stroke = new BasicStroke(strokeThickness);
    g2d.setStroke(stroke);
    g2d.draw(new Rectangle(20,20,200,200));
  }
}

Stroking or Filling with a Texture

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class BasicDraw {
  public static void main(String[] args) {
    new BasicDraw();
  }
  BasicDraw() {
    JFrame frame = new JFrame();
    frame.add(new MyComponent());
    frame.setSize(300, 300);
    frame.setVisible(true);
  }
}
class MyComponent extends JComponent {
  public void paint(Graphics g) {
    Graphics2D g2d = (Graphics2D) g;
    int x = 10;
    int y = 10;
    int width = 50;
    int height = 25;
    BufferedImage bi = new BufferedImage(20,20,BufferedImage.TYPE_INT_RGB);
    
    TexturePaint texture = new TexturePaint(bi, new Rectangle(x, y, width, height));
    g2d.setPaint(texture);
  }
}