Week 4/39

Exercises on JOOS

1. Write and execute tiny JOOS programs that:
   • print "Hello World";
   • sort a list of integers; and
   • implement simple binary search trees.
2. (Aarhus students only.) Compare JOOS to the BETA language. Which concepts are similar? How difficult would it be to translate a JOOS program into a BETA program?
3. Look at the java.awt.* classes. What does the class hierarchy look like? Discuss how this is supposed to work. Try to understand AwtDemos/ScrollableScribble.java.