Java awt Package Canvas Example

	import java.awt.* ;
	public class CanvasDemo
	{
		public static void main(String args[])
		{
			Frame f = new Frame() ;
			f.setLayout(new FlowLayout());
			MyCanvas c = new MyCanvas();
			c.setBackground(Color.red);
			c.setSize(100,100);
			f.add(c) ;
			f.setSize(300,300);
			f.setVisible(true);
		}
	}

	class MyCanvas extends Canvas
	{
		public void paint(Graphics g)
		{
			setBackground(Color.green) ;
			g.setColor(Color.red) ;
			g.drawLine(0,0,100,100);
		}
	}