代碼有問(wèn)題
public?void?textGetMethods(){ ????int?size=ClassToSelect.size(); ????System.out.println("課程如下:"); ????for(int?i?=?0?;?i?<?size?;?i++){ ????????Class?cl?=(Class)ClassToSelect.get(i); ????????System.out.println("課程:"+cl.ID+cl.name); ????} }ClassToSelect是怎么回事

2019-12-09
是不是沒(méi)有創(chuàng)建ClassToSelect接口