DarkTableRendering.java

package com.weblogism;

import com.github.weisj.darklaf.LafManager;
import com.github.weisj.darklaf.theme.DarculaTheme;

import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;

public class DarkTableRendering extends JFrame {

    static class DarkTableModel extends AbstractTableModel {

        int rows;
        int cols;
        
        public DarkTableModel(int rows, int cols) {
            this.rows = rows;
            this.cols = cols;
        }

        @Override
        public Class<?> getColumnClass(int columnIndex) {
            return String.class; // force model to String
        }

        @Override
        public int getRowCount() {
            return rows;
        }

        @Override
        public int getColumnCount() {
            return cols;
        }

        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            return "(" + rowIndex + ", " + columnIndex + ")";
        }
    }

    static class DarkTableCellRenderer extends DefaultTableCellRenderer {
        @Override
        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
                                                       boolean hasFocus, int row, int column) {
            super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
            this.setBorder(BorderFactory.createLineBorder(Color.GREEN, 2));
            return this;
        }
    }

    public DarkTableRendering() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setTitle("Lorem Ipsum");
        
        try {
            setSize(new Dimension(450, 300));
            
            JPanel mainPanel = new JPanel();
            
            JTable aTable = new JTable();
            aTable.setModel(new DarkTableModel(10,10));
            aTable.setDefaultRenderer(Object.class, new DarkTableCellRenderer());
            
            mainPanel.setLayout(new BorderLayout());
            mainPanel.add(new JScrollPane(aTable), BorderLayout.CENTER);
            
            getContentPane().setLayout(new BorderLayout());
            getContentPane().add(mainPanel, BorderLayout.CENTER);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            LafManager.install(new DarculaTheme());
            final DarkTableRendering frame = new DarkTableRendering();
            frame.setVisible(true);
        });
    }
}