打印输出时不显示JTable单元格文本空间

import javax.swing.table.DefaultTableCellRenderer;

public class CustomTableCellRenderer extends DefaultTableCellRenderer {
    @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);
        
        // 设置渲染器的显示方式，例如将文本居中显示
        ((JLabel) component).setHorizontalAlignment(SwingConstants.CENTER);
        
        // 如果单元格中没有文本内容，则显示一个空格
        if (value == null || value.toString().isEmpty()) {
            ((JLabel) component).setText(" ");
        }
        
        return component;
    }
}

JTable table = new JTable();
table.setDefaultRenderer(Object.class, new CustomTableCellRenderer());