ABSTRACT
Thesleep()methodworksinmilliseconds,so1000=1second.This featureoftheThreadclassisinvaluableforanimation-itonly suspendsthethread,leavingtherestoftheprogramactive.
Thisissothatitalsostopsexecutionwhentheuserleavestheapplet. Andofcourse,ititisrestartedbystart().Thisisnotessentialinthis
case-thethreadcouldbeleftrunningwithoutinterferingwith anythingelse,orcomingtoanyharm.
