データの整合性を維持しながら、バックエンド データ構造との JTable の同期を最適化する方法

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

class RangeEditor extends AbstractCellEditor implements TableCellEditor {
  private final double MIN = 12.1;
  private final double MAX = 45.6;

  private JTextField textField;
  private Double value;

  @Override
  public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
    if (value instanceof Double) value = (Double) value;
    double dValue = (value != null && value instanceof Double) ? (Double) value : null;
    String textValue = (dValue != null) ? dValue.toString() : "";

    textField = new JTextField(textValue, 10);
    textField.setInputVerifier(new InputVerifier() {
      @Override
      public boolean verify(JComponent input) {
        String text = ((JTextField) input).getText();
        try {
          double dText = Double.parseDouble(text);
          return (dText >= MIN && dText <= MAX);
        } catch(NumberFormatException e) {
          return false;
        }
      }
    });
    return textField;
  }

  @Override
  public Object getCellEditorValue() {
    String text = textField.getText();
    double dValue = (text != null && !text.isEmpty()) ? Double.parseDouble(text) : null;
    return dValue;
  }
}