下面程序段的输出结果是( ) classTest{ publicstaticvoidmain(Stringargs[]){ MyThreadt=newMyThread(); t.displayOutput('thasbeencreateD'); t.start(); } } ClassMyThreadextendsThread{ publicvoiddisplayOutput(Strings){ System.out.println(S); } publicvoidrun(){ displayOutput('tiSrunning.'); } }