用顿号将若干个字符串分隔开

用顿号将若干个字符串分隔开

错误做法：

 String[] words = { " a " , " b " , " c " } ;
 String word = "" ;

  for ( int  i = 0 ;i < words.length;i ++ )
  {
     word += words[i]＋ " 、 " ;
 }

 正确做法：

 String[] words = { " a " , " b " , " c " } ;
 String word = "" ;

  for ( int  i = 0 ;i < words.length;i ++ )
  {
      if  ( ! word.equals( "" )) 
     word += " 、 " ;
     word += words[i];
 }