A Custom JPanel Used as a Canvas for Drawing - Java Swing

Java examples for Swing:JPanel

  1. HOME
  2. Java
  3. Swing
  4. JPanel

Description

A Custom JPanel Used as a Canvas for Drawing

Demo Code

import java.awt.BasicStroke;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;

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

public class Main extends JPanel {
  public Main() {
    this.setPreferredSize(new Dimension(600, 75));
  }/*from   w  ww  . java2s  .  c o m*/

  @Override
  public void paintComponent(Graphics g) {
    // Paint its background
    super.paintComponent(g);

    // Draw a line
    g.drawLine(10, 10, 50, 50);
    // Draw a rectangle
    g.drawRect(80, 10, 40, 20);

    // Draw an oval
    g.drawOval(140, 10, 410, 20);

    // Fill an oval
    g.fillOval(200, 101, 40, 20);

    // Draw a circle
    g.drawOval(250, 10, 40, 40);

    // Draw an arc
    g.drawArc(300, 110, 50, 50, 60, 120);

    // Draw a string
    g.drawString("Hello Swing!", 350, 30);

    // Draw a thicker rectangle using Graphics2D
    Graphics2D g2d = (Graphics2D) g;
    g2d.setStroke(new BasicStroke(4));
    g2d.drawRect(450, 10, 50, 50);
  }

  public static void main(String[] args) {
    JFrame frame = new JFrame("Sample Drawings Using a Graphics Object");
    frame.getContentPane().add(new Main());
    frame.pack();
    frame.setVisible(true);
  }
}

Related Tutorials