How to import the operators?

dear all,
Where is TOPSAR-Split operator?

The GPF interface does not provide a method with just the operator name as parameter.
Please specify a map with the processing parameters and the source product as second and third parameter.

Please have a look at the snap examples and also at the JavaDoc.

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I got the following error:

RuntimeError: org.esa.snap.core.gpf.OperatorException: Unknown operator ‘TOPSAR-Split’. Note that operator aliases are case sensitive.

Could you please figure out the reason, mainly what’s the operator name for ‘TOPSAR-Split’?

Actually it should work.
I assume that you have installed S1TBX. Have you installed it during SNAP installation or later via the module manager?
What happens if you use gpt -h on the commandline? Do you see the TOPSAR-Split operator?

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I found what is missing.

Add to the beginning of your code the following to lines
registry = GPF.getDefaultInstance().getOperatorSpiRegistry()

It seems that the operators are not loaded by default.

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yes, thank you very much!