GameCellRenderer.java

package game;

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

public class GameCellRenderer implements TableCellRenderer {
    private TableCellRenderer defaultRenderer;

    public GameCellRenderer() {
        defaultRenderer = new JTable().getDefaultRenderer(Object.class);
    }

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
                                                   boolean hasFocus, int row, int column) {

        Component component = defaultRenderer.getTableCellRendererComponent(table, null,
                false, false, row, column);


        if ((boolean) table.getValueAt(row, column)) {
            component.setBackground(Color.DARK_GRAY);
        } else {
            component.setBackground(Color.WHITE);
        }

        return component;
    }
}