//EINtutor.java import tutor; import java.awt.*; public class EINtutor extends tutor { private Einstein EIN; public void sendImage(String filename) { Image im = EIN.getImage(EIN.getCodeBase(),filename); OP.setImage(im); OP.repaint(); } public EINtutor(Einstein e) { super("http://www.its.caltech.edu/~phys1/java/phys1/Einstein/EIN.txt"); EIN = e; sendImage("images/panel1.gif"); } public void parse() { text.setCaretPosition(0); switch(pageNum) { case 1: sendImage("images/panel1.gif"); break; case 4: sendImage("images/panel4.jpg"); break; } } }