试题详情
单项选择题 Which statements, when inserted at the indicated position in the following code, will cause a runtime exception when attempting to run the program?()   class A {}   class B extends A {}   class C extends A {}   public class Q3ae4 {   public static void main(String args[]) {   A x = new A();   B y = new B();   C z = new C();   // insert statement here   }   } 

A、x = y;

B、z = x;

C、y = (B) x;

D、z = (C) y;

E、y = (A) y;

  • C
  • 关注下方微信公众号,在线模考后查看

热门试题