The object appears to be a custom class. While it may be designed to be like a table, it is not being recognized by TestComplete as a known table class.
Start there... there's documentation about java swing tables and how to recognize custom controls. See if this helps you.
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Why automate? I do automated testing because there's only so much a human being can do and remain healthy. Sleep is a requirement. So, while people sleep, automation that I create does what I've described above in order to make sure that nothing gets past the final defense of the testing group.
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