Hi Doug: in /proj/adaptive/www/course/f98/hw/1/adaptive-methods-graph-ex when I run # cd gen java -classpath gen/classes:/proj/demsys/demjava/cur/demjava.jar:.:/usr/java1.1/classes:/usr/java1.1/lib/classes.zip Main < ../$1 cd .. it cannot find class Main. I cannot figure out why. Also, each time I run the program it stops at a different place. See sc and sc2. Do you have an explanation? Again the threads? -- Karl