While converting Java Map to JSON using Jackson ObjectMapper I’m getting this error. My map have one null key(As per my use case I need null key). Is there a way to fix this issue without removing null key ? com.fasterxml.jackson.core.JsonGenerationException: ...
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I’m trying to automate my trading strategy. I’m new to programming languages. Just leaned few things in Java and developed the program. I’m getting below error while parsing my timeseries data, Please some one help me com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of ...