Line color in JTable

how can I change line color in JTable.

Then you need to do custom painting. Something like:
JTable table = new JTable(...)
     public void paintComponent(Graphics g)
          super.paintComponent(g);
          g.setColor( Color.RED );
          int y = getRowHeight(0) - 1;
          g.drawLine(0, y, getSize().width, y);
};

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Line color in JTable

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