CODEWITHSUNDEEP
javajsongroovy
Karan Parikh
Karan Parikh

Reputation: 321

Cannot use isEmpty method on a jsonarray, it gives exception groovy.lang.MissingMethodException: No signature of method

I am using APIs to fetch details from BMC Remedy, and the response is a json which is containing an jsonarray which is empty, so just to avoid such cases I am checking whether the jsonarray is empty or not.

This is the response received when the call is done via postman and I want ot check the jsonarray entries

And the same call I am able to replicate in the groovy code also, only thing is when checking whether the jsonarray is empty I receive an exception.

This is the code and output snippet when printing the value of JSONarray

However as soon as I try and check if the JSONarray is Empty it gives me error.

Failing code snippet

I know, I can alternatively use the length() method and check, However I need to know why this code is failing, Please help I am quite new to groovy.

I have also imported java.util.List and tried but no luck

Upvotes: 0

Views: 532

Answers (1)

Dónal
Dónal

Reputation: 187529

A MissingMethodException is thrown because JSONArray does not have a method named isEmpty().

I think you're confusing org.json.JSONArray and web.json.JSONArray. The latter does have a method isEmpty(), but you're using the former.

Upvotes: 1

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