4回答

• 

  qq_shero蔡_0

  2018-06-12 11:25:14

  class ValHold {

  public int i = 10;

  }

  public class ObParm {

  public static void main(String[] args) {

  ObParm o = new ObParm();

  o.amethod();

  }

  public void amethod() {

  int i = 99;

  ValHold v = new ValHold();

  v.i = 30;

  another(v, i);

  System.out.println(v.i + " " + i);

  }

  public void another(ValHold v, int i) {

  i = 0;

  v.i = 20;

  ValHold vh = new ValHold();

  v = vh;

  System.out.println(v.i + " " + i);

  }

  }

  输出结果：

   

   

  0 0
• 

  梦幻bug

  2016-10-12 20:30:07

  http://study.163.com/ 网易云课堂

  0 0
• 

  qq_温柔小王子_04161928

  2016-10-12 20:12:09

  我觉得实战项目帮助更大点

  0 0
• 

  dynamic何

  2016-10-12 20:11:58

  百度有50道的
  

  0 0