试题详情
单项选择题 public class test {  public static void add3 （Integer i）  int val = i.intValue （ ）；  val += 3；  i = new Integer （val）；  } public static void main （String args [ ] ）  {  Integer  i = new Integer （0）；  add3 （i）；  system.out.printIn （i.intValue （ ）  ）；  } What is the result？（）  

A、 Compilation will fail.

B、 The program prints “0”.

C、 The program prints “3”.

D、 Compilation will succeed but an exception will be thrown at line 3.

  • B

  • 关注下方微信公众号，在线模考后查看

热门试题