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Posted to dev@commons.apache.org by time_crossing <ti...@163.com> on 2021/12/03 12:50:37 UTC

Re: [Lang]Consult

Thanks for response.
I know 
System.out.println(StringUtils.split(code,"_")[1]);

Will retrun expected result.
But I think when I use
String code = "constant_true";
System.out.println(StringUtils.split(code,"constant_")[0]);


 At first I thought return is (“" and “true”)
In fact this code will return what I say:
class Solution{
public static void main(String[] args) {
      String code = "constant_true";
System.out.println(code.split("constant_")[1]);

}
}
On 12/3/2021 20:41，Marco Neumann<ma...@gmail.com> wrote：
it's not splitting anything this will.

This will:

System.out.println(StringUtils.split(code,"_")[1]);

On Fri, Dec 3, 2021 at 12:29 PM time_crossing <ti...@163.com> wrote:



Hi.
When I write this code:
class Solution{
public static void main(String[] args) {
String code = "constant_true";
System.out.println(StringUtils.split(code,"constant_")[0]);


}
}


I hope it retrun “true".
But it return “rue”.
Is it a bug? Should I try to fix it?



--


---
Marco Neumann
KONA

Re: [Lang]Consult

Posted by Alex P <st...@gmail.com>.
You need to use "splitByWholeSeparator" instead of "split"
https://commons.apache.org/proper/commons-lang/apidocs/org/apache/commons/lang3/StringUtils.html#splitByWholeSeparator-java.lang.String-java.lang.String-

On Fri, Dec 3, 2021 at 7:50 AM time_crossing <ti...@163.com> wrote:
>
> Thanks for response.
> I know
> System.out.println(StringUtils.split(code,"_")[1]);
>
> Will retrun expected result.
> But I think when I use
> String code = "constant_true";
> System.out.println(StringUtils.split(code,"constant_")[0]);
>
>
>  At first I thought return is (“" and “true”)
> In fact this code will return what I say:
> class Solution{
> public static void main(String[] args) {
>       String code = "constant_true";
> System.out.println(code.split("constant_")[1]);
>
> }
> }
> On 12/3/2021 20:41，Marco Neumann<ma...@gmail.com> wrote：
> it's not splitting anything this will.
>
> This will:
>
> System.out.println(StringUtils.split(code,"_")[1]);
>
> On Fri, Dec 3, 2021 at 12:29 PM time_crossing <ti...@163.com> wrote:
>
>
>
> Hi.
> When I write this code:
> class Solution{
> public static void main(String[] args) {
> String code = "constant_true";
> System.out.println(StringUtils.split(code,"constant_")[0]);
>
>
> }
> }
>
>
> I hope it retrun “true".
> But it return “rue”.
> Is it a bug? Should I try to fix it?
>
>
>
> --
>
>
> ---
> Marco Neumann
> KONA

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