Groovy: No signature of method: static java.lang.String.ValueOf() is applicable for argument types: (java.lang.String) values: [1572245927833]

Question

I'm kind of new to Groovy and now rework JS script to Groovy in JMeter. I've got persistent error No signature of method: static java.lang.String.ValueOf() is applicable for argument types: (java.lang.String) values: [1572245927833] when run in code below in JSR223 Groovy in JMeter, the error for line number with return statement:

def clientTransactionIdGen() {
    String timestamp = new Date().getTime().toString();
    def rand = get_random(1000000, 9999999);
    def user_id = vars.get("user_id");
    return timestamp + String.valueOf(rand) + '^' + user_id;
}

1572245927833 is time in seconds (so timestamp variable) and there is no ValueOf() conversion in line with return statement. I even changed timestamp type from def to String, still error points to line with return statement. Why such error in such place? As I understand there is a try to convert already string object to String. Why? The same error actually is when I have timestamp as long and convert in return line, also a puzzle to me:

def clientTransactionIdGen() {
    def timestamp = new Date().getTime();
    def rand = get_random(1000000, 9999999);
    def user_id = vars.get("user_id");
    return String.valueOf(timestamp) + String.valueOf(rand) + '^' + user_id;
}

ADDED: per good remarks changed all ValueOf to valueOf in all script, still the error as above stays and says: No signature of method: static java.lang.String.ValueOf()

ADDED: solved after reload of JMeter, apparently something remained cached and did not allow for proper debugging.

It says you are trying to parse a String to a String, which is pointless. Change String.ValueOf(rand) into simply rand — Stultuske
– Stultuske, Commented Oct 28, 2019 at 7:19
@michalk if that was the problem, he would already get errors on the timestamp parsing. — Stultuske
– Stultuske, Commented Oct 28, 2019 at 7:19
String.ValueOf() -> String.valueOf(): it's case-sensitive — ernest_k
– ernest_k, Commented Oct 28, 2019 at 7:20
@ernest_k, I've changed ValueOf to valueOf in the function - still same error — Alex Martian
– Alex Martian, Commented Oct 28, 2019 at 7:23
@ernest_k, after app (JMeter) reload error is no longer there, thank you! — Alex Martian
– Alex Martian, Commented Oct 28, 2019 at 7:38

Ori Marko · Accepted Answer · 2019-10-28 07:21:24Z

2

Java methods start with lower case valueOf:

return timestamp + String.valueOf(rand) + '^' + user_id;

answered Oct 28, 2019 at 7:21

Ori Marko

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2 Comments

Ori Marko Over a year ago

@AlexeiMartianov error can't remain ValueOf, maybe you have more code using ValueOf instead of valueOf

Alex Martian Over a year ago

thank you, following @ernest_k remark of cached, I restarted and error went away.

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