In this example, on first table you can see cell with string "Частота настройки, кГц" on the left side and three row on the right side. It's exactly what I need.
If you are wanting to do this with JTable then the simple answer is it doesn't support merging cells. You can however add such support or use a third party component that already has this feature added (such as JIDE grid, but it's not free). Not sure if there are any free implementations available but a quick search may get you what you want.
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