Is animation typically redrawing or updating the entire window constantly?

[John Quach]

I thought only a character needs to be updated, not the background or any non-moving objects.

I thought about this after I removed the code that fills up the background in this program. The result was the image being shadowed, or the image the buffer replaced was never erased and left a trail of the image wherever the user dragged the mouse cursor.

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

public class BufImages extends JApplet implements MouseMotionListener
{
	Image offscreen, player;
	Graphics offscreenGrp;
	int x, y;
	public void init()
	{
		resize( 1000, 1000);
		offscreen = createImage( 1000, 1000);
		offscreenGrp = offscreen.getGraphics();
		player = getImage( getCodeBase(), "player1.png");
		addMouseMotionListener(this);
	}
	public void paint ( Graphics g)
	{
		offscreenGrp.setColor( Color.CYAN);
		offscreenGrp.fillRect( 0, 0, 1000, 1000);

		offscreenGrp.drawImage( player, x, y, this); //offscreen image
		
		g.drawImage( offscreen, 0, 0, this); //draw offscreen image to applet
	}
	public void mouseMoved( MouseEvent me)
	{
		x = me.getX() - 50;
		y = me.getY() - 50;
		repaint();
	}
	public void mouseDragged( MouseEvent me){}

}

[Mich Robinson]

typically, yes.

[Randall Twede]

concidering even ordinary GUI components are constantly redrawn i would think so.