public class Car { public int fadongji; public int luntai; public int oil; public Car(){ System.out.println("父類構造方法被執(zhí)行了");}}public class che extends Car{ public che(){ System.out.println("子類構造方法被執(zhí)行了"); }}public class UseChe { public static void main(String[] args){ che c=new che(); c.fadongji=55; c.luntai=12; c.oil=12; }}為什么在子類父類的構造方法里面加上void 就不輸出SYSO 語句了 ?但是去掉void 就執(zhí)行了 輸出語句呢？？