以下代码编译运行成功，没有任何异常importjava.util.ArrayList;classSuperSample{}classSampleextendsSuperSample{@SuppressWarnings("unchecked")publicstaticvoidmain(String[]args){try{ArrayListsList=newArrayList();Objecto=sList;ArrayListssList=(ArrayList)o;ssList.add(newSuperSample());}catch(Exceptione){e.printStackTra