piccanvas.java

a zipped example for using a USB camera directly from Java

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class PicCanvas extends JPanel
{
	private Image image;
	private int xcoor, ycoor;
	private int mousex = 0;
	private int mousey = 0;

	public PicCanvas() {
		super(true);
	}
	
	public void setParams( Image i, int x, int y )
	{
		image = i;
		xcoor = x;
		ycoor = y;
		this.setBackground(Color.magenta);
		this.repaint();
	}
	
	public void paintComponent( Graphics g )
	{
		super.paintComponent(g);
		if (image != null) {
			//System.out.println(g.getColor());
			//g.setColor(Color.blue);
			//g.clearRect(0,0, 800, 500);
			g.drawImage(image, xcoor, ycoor, Color.green, this);
		}
	}

	public int getx() { return mousex; }

	public int gety() { return mousey; }
}