为什么我收到长度为3而不是4?我怎样才能解决这个问题以获得合适的长度?
String s="+9851452;;FERRARI;;"; String split[]=s.split("[;]"); System.out.println(split.length);
解决方法
你得到的长度为3,因为
split
,
This method works as if by invoking the two-argument split method with the given expression and a limit argument of zero. Trailing empty strings are therefore not included in the resulting array.
如果您指定负限制,它将正常工作:
String s="+9851452;;FERRARI;;"; String split[]=s.split(";",-1); System.out.println(Arrays.toString(split));
你只需要忽略或删除第5项,或删除尾随; – 它显示是因为4个令牌的两边有5个(可能是空白的)字符串.有关详细信息,请参阅docs.