将边框单元格颜色更改为全部Jtable，选中时为JList

import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.awt.*;

public class CustomTableCellRenderer extends DefaultTableCellRenderer {
    private Color borderColor;

    public CustomTableCellRenderer(Color borderColor) {
        this.borderColor = borderColor;
    }

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        Component component = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
        component.setBackground(borderColor);
        return component;
    }
}

public class CustomListSelectionModel extends DefaultListSelectionModel {
    private Color selectionColor;

    public CustomListSelectionModel(Color selectionColor) {
        this.selectionColor = selectionColor;
    }

    @Override
    public void setSelectionInterval(int index0, int index1) {
        super.setSelectionInterval(index0, index1);
        setBackground(selectionColor);
    }
}

public class Main {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Custom JTable and JList");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 创建JTable
        String[] columnNames = {"Column 1", "Column 2", "Column 3"};
        Object[][] data = {
                {"Data 1", "Data 2", "Data 3"},
                {"Data 4", "Data 5", "Data 6"},
                {"Data 7", "Data 8", "Data 9"}
        };
        JTable table = new JTable(data, columnNames);

        // 创建JList
        String[] listData = {"Item 1", "Item 2", "Item 3"};
        JList<String> list = new JList<>(listData);

        // 设置JTable的单元格渲染器
        Color borderColor = Color.RED; // 边框颜色
        table.setDefaultRenderer(Object.class, new CustomTableCellRenderer(borderColor));

        // 设置JList的选择模型
        Color selectionColor = Color.BLUE; // 选中时的颜色
        list.setSelectionModel(new CustomListSelectionModel(selectionColor));

        // 将JTable和JList添加到窗口中
        frame.setLayout(new GridLayout(2, 1));
        frame.add(new JScrollPane(table));
        frame.add(new JScrollPane(list));

        frame.pack();
        frame.setVisible(true);
    }
}