Error: dynamodb could not instantiate class

Answered by Rafal Wilinski
What's Causing This Error
This is an error that occurs when using DynamoDB in Java. For instance, you may run into this error:
- If you define a table class (class with the annotation
@DynamoDBTable(tableName=""))as a subclass of another class. - If it is defined within the same file as another class.
- If you have not defined getters/setters or a no-arg constructor.
Solution: Here's How To Resolve It
To solve this error:
- Ensure that you define your Java DynamoDB table classes in their separate file.
- Ensure that your class has a no-arg constructor.
Other Common DynamoDB Errors (with Solutions)
- DynamoDB missing items
- DynamoDB Query Limit Not Working
- ValidationException: Invalid KeyConditionExpression: Attribute name is a reserved keyword;
- dynamodb atomic counter not working
- AWS DynamoDB errors ResourceNotFoundException
- failed to begin subsegment named 'amazondynamodbv2': segment cannot be found.
- Unable to start DynamoDB Local process
- dynamodb put item not working
- dynamodb connection timeout
- ConfigError: Missing region in config
- Error ValidationException: One or more parameter values were invalid: Type mismatch for key X expected: S actual: M
- aws.dynamodb.documentclient is not a constructor
- DynamoDB Key element does not match the schema
- is not authorized to perform dynamodb:* on resource
- dynamodb ttl not deleting / erasing items
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