1回答

• 

  zoeyqq

  2016-03-24 11:25:43

  已采纳

  import java.util.ArrayList;

  import java.util.List;

  
  

  
  

  
  

  public class TestList {

  
  

  public static void main(String[] args) {

  // TODO Auto-generated method stub

  List list=new ArrayList();

  int i=list.size();

  if(list==null)

  {

  System.out.println("list为空");

  System.out.println(i);

  }

  else

  {

  System.out.println("list不为空");

  System.out.println(i);

  }

  
  

  }

  
  

  1 0

  夜阑风语丿

  Thank you very much!

  2016-03-25 07:22:52

  共 1 条回复 >