Check Value In UDF

Hi,
I am using a UDF to take substring of my value from source (source value is of format abcd/xyz). Now I want to check if there exists any value before "/" i.e. I want to check if there is any value before "/" . I tried using the .length function, but due to some reason I am not able to get it working. So please tell me how to get the below UDF working:
public String getUser1Id(String Id, Container container) throws StreamTransformationException{
String logName = Id;
int len = logName.indexOf("/");
logName = logName.substring(0,len);
return logName;
Id is the input from the source (abcd/xyz) into the UDF.
Thanks.

Hi,
your code is working if you have "/" in your ld parameter. Another point is your function returns left of '/' in your input. Is this your requirement or returning true or false depending on the existence of anything before '/'?
Kind Regards,

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Check Value In UDF

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