vars.get('var_name') in groovy outputs wrong value in JMeter

Question

I've defined a variable in JMeter.

But when I try to access the variable from Groovy script it gives 53 instead of 5, if I put 10 it throws an exception

javax.script.ScriptException: org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '10' with class 'java.lang.String' to class 'int'

Here is my JSR223 Sampler script

int user_number = vars.get("USER_COUNT")
log.info('Total use is '+user_number)

Answer 1

Since vars.get("USER_COUNT") returns a String you cannot store that into a int variable that's the reason exception is thrown

You should convert the string to int using below way

int user_number = Integer.parseInt(vars.get("USER_COUNT"))
log.info('Total use is '+user_number)

Hope this will be helpful.

Answer 2

vars is a shorthand for JMeterVariables and vars.get() function gives you a String

So the options are in:

1. Use the string as it is:

   String user_number = vars.get("USER_COUNT")
   

2. Or convert it to an Integer:

   int user_number = vars.get("USER_COUNT") as int