From 42453b825fb1b6771a6ebe22ffa74264ab0e4487 Mon Sep 17 00:00:00 2001 From: athar Date: Sun, 30 Jun 2024 21:06:59 +0200 Subject: [PATCH] =?UTF-8?q?Layout=20Verfeinerung=20und=20einf=C3=BCgen=20d?= =?UTF-8?q?es=20Zur=C3=BCck=20Buttons?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- PR2 KI Projekt/fakturama_data.xml | 58 ++++++++++++ PR2 KI Projekt/src/FakturamaGUI.java | 134 ++++++++++++++------------- PR2 KI Projekt/src/Main.java | 97 ++++++++++++------- 3 files changed, 193 insertions(+), 96 deletions(-) create mode 100644 PR2 KI Projekt/fakturama_data.xml diff --git a/PR2 KI Projekt/fakturama_data.xml b/PR2 KI Projekt/fakturama_data.xml new file mode 100644 index 0000000..778b1ba --- /dev/null +++ b/PR2 KI Projekt/fakturama_data.xml @@ -0,0 +1,58 @@ + + + + + Athar +
Adam
+ Ali + false + false + + + +
+ 1 + Milch + 1 + 2.0 + 3.0 +
+ + + + 1 + Athar + 23.05.2024 + Rechnung erstellt + +
+ 1 +
+ + + + + + 1 + 1 + 24.05.2023 + Rechnung erstellt + + + + + 1 + 1 + 23.05.2023 + Rechnung erstellt + + + + + 1 + 1 + 23.05.2023 + Rechnung erstellt + + + diff --git a/PR2 KI Projekt/src/FakturamaGUI.java b/PR2 KI Projekt/src/FakturamaGUI.java index 13f1b6e..ff01721 100644 --- a/PR2 KI Projekt/src/FakturamaGUI.java +++ b/PR2 KI Projekt/src/FakturamaGUI.java @@ -1,10 +1,13 @@ import javax.swing.*; import java.awt.*; +import java.awt.event.*; import java.util.ArrayList; import java.util.List; public class FakturamaGUI { private JFrame frame; + private JPanel mainPanel; + private CardLayout cardLayout; private JTextArea textArea; public FakturamaGUI() { @@ -15,7 +18,17 @@ public class FakturamaGUI { frame = new JFrame("Fakturama"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(800, 600); - frame.setLayout(new BorderLayout()); + + cardLayout = new CardLayout(); + mainPanel = new JPanel(cardLayout); + + // Startseite + JPanel homePanel = new JPanel(new BorderLayout()); + textArea = new JTextArea(); + textArea.setEditable(false); + JScrollPane scrollPane = new JScrollPane(textArea); + homePanel.add(scrollPane, BorderLayout.CENTER); + mainPanel.add(homePanel, "Home"); // Menüleiste JMenuBar menuBar = new JMenuBar(); @@ -53,6 +66,7 @@ public class FakturamaGUI { saveDataItem.addActionListener(e -> { Main.saveData(); updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JMenuItem loadDataItem = new JMenuItem("Daten laden"); @@ -60,23 +74,20 @@ public class FakturamaGUI { loadDataItem.addActionListener(e -> { Main.loadData(); updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JMenuItem exitItem = new JMenuItem("Beenden"); menu.add(exitItem); exitItem.addActionListener(e -> System.exit(0)); - textArea = new JTextArea(); - textArea.setEditable(false); - JScrollPane scrollPane = new JScrollPane(textArea); - frame.add(scrollPane, BorderLayout.CENTER); - + frame.add(mainPanel); frame.setVisible(true); updateTextArea(); } private void showAddCustomerPanel() { - JPanel panel = new JPanel(new GridLayout(6, 2)); + JPanel panel = new JPanel(new GridLayout(7, 2)); JLabel nameLabel = new JLabel("Name:"); JTextField nameField = new JTextField(); JLabel addressLabel = new JLabel("Adresse:"); @@ -98,11 +109,11 @@ public class FakturamaGUI { boolean smallBusiness = smallBusinessBox.isSelected(); Main.customers.add(new Main.Customer(name, address, contactPerson, taxExempt, smallBusiness)); updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); panel.add(nameLabel); panel.add(nameField); @@ -114,14 +125,15 @@ public class FakturamaGUI { panel.add(taxExemptBox); panel.add(smallBusinessLabel); panel.add(smallBusinessBox); - panel.add(addButton); panel.add(backButton); + panel.add(addButton); - showPanel(panel); + mainPanel.add(panel, "AddCustomer"); + cardLayout.show(mainPanel, "AddCustomer"); } private void showAddArticlePanel() { - JPanel panel = new JPanel(new GridLayout(5, 2)); + JPanel panel = new JPanel(new GridLayout(6, 2)); JLabel unitLabel = new JLabel("Einheit:"); JTextField unitField = new JTextField(); JLabel descriptionLabel = new JLabel("Bezeichnung:"); @@ -129,7 +141,7 @@ public class FakturamaGUI { JLabel netPriceLabel = new JLabel("Nettopreis:"); JTextField netPriceField = new JTextField(); JLabel vatRateLabel = new JLabel("Mehrwertsteuersatz:"); - JTextField vatRateField = new JTextField(); + JComboBox vatRateBox = new JComboBox<>(new Double[]{7.0, 19.0}); JButton addButton = new JButton("Hinzufügen"); addButton.setBackground(new Color(144, 238, 144)); // Hellgrün @@ -137,14 +149,14 @@ public class FakturamaGUI { String unit = unitField.getText(); String description = descriptionField.getText(); double netPrice = Double.parseDouble(netPriceField.getText()); - double vatRate = Double.parseDouble(vatRateField.getText()); + double vatRate = (Double) vatRateBox.getSelectedItem(); Main.articles.add(new Main.Article(unit, description, netPrice, vatRate)); updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); panel.add(unitLabel); panel.add(unitField); @@ -153,36 +165,42 @@ public class FakturamaGUI { panel.add(netPriceLabel); panel.add(netPriceField); panel.add(vatRateLabel); - panel.add(vatRateField); - panel.add(addButton); + panel.add(vatRateBox); panel.add(backButton); + panel.add(addButton); - showPanel(panel); + mainPanel.add(panel, "AddArticle"); + cardLayout.show(mainPanel, "AddArticle"); } private void showCreateOfferPanel() { JPanel panel = new JPanel(new BorderLayout()); - JPanel formPanel = new JPanel(new GridLayout(4, 2)); + JPanel formPanel = new JPanel(new GridLayout(4, 2)); JLabel customerLabel = new JLabel("Kunde:"); JComboBox customerBox = new JComboBox<>(); for (Main.Customer customer : Main.customers) { customerBox.addItem(customer.name); } + formPanel.add(customerLabel); + formPanel.add(customerBox); JLabel dateLabel = new JLabel("Datum:"); JTextField dateField = new JTextField(); - - formPanel.add(customerLabel); - formPanel.add(customerBox); formPanel.add(dateLabel); formPanel.add(dateField); + panel.add(formPanel, BorderLayout.NORTH); + JLabel articlesLabel = new JLabel("Artikel:"); JList articlesList = new JList<>(Main.articles.stream().map(a -> a.description).toArray(String[]::new)); articlesList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); JScrollPane articlesScrollPane = new JScrollPane(articlesList); + panel.add(articlesLabel, BorderLayout.CENTER); + panel.add(articlesScrollPane, BorderLayout.CENTER); + + JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT)); JButton addButton = new JButton("Erstellen"); addButton.setBackground(new Color(144, 238, 144)); // Hellgrün addButton.addActionListener(e -> { @@ -196,26 +214,24 @@ public class FakturamaGUI { String date = dateField.getText(); Main.offers.add(new Main.Offer(Main.nextOfferId++, customer, selectedArticles, date, "Angebot erstellt")); updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); - JPanel buttonPanel = new JPanel(new GridLayout(1, 2)); - buttonPanel.add(addButton); buttonPanel.add(backButton); + buttonPanel.add(addButton); - panel.add(formPanel, BorderLayout.NORTH); - panel.add(articlesLabel, BorderLayout.CENTER); - panel.add(articlesScrollPane, BorderLayout.CENTER); panel.add(buttonPanel, BorderLayout.SOUTH); - showPanel(panel); + mainPanel.add(panel, "CreateOffer"); + cardLayout.show(mainPanel, "CreateOffer"); } + private void showCreateOrderConfirmationPanel() { - JPanel panel = new JPanel(new GridLayout(4, 2)); + JPanel panel = new JPanel(new GridLayout(6, 2)); JLabel offerLabel = new JLabel("Angebot:"); JComboBox offerBox = new JComboBox<>(); for (Main.Offer offer : Main.offers) { @@ -234,24 +250,27 @@ public class FakturamaGUI { Main.orderConfirmations.add(new Main.OrderConfirmation(Main.nextOrderConfirmationId++, selectedOffer, date, "Auftragsbestätigung erstellt")); selectedOffer.status = "Auftragsbestätigung erstellt"; updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); panel.add(offerLabel); panel.add(offerBox); panel.add(dateLabel); panel.add(dateField); - panel.add(addButton); + panel.add(new JLabel()); + panel.add(new JLabel()); panel.add(backButton); + panel.add(addButton); - showPanel(panel); + mainPanel.add(panel, "CreateOrderConfirmation"); + cardLayout.show(mainPanel, "CreateOrderConfirmation"); } private void showCreateDeliveryNotePanel() { - JPanel panel = new JPanel(new GridLayout(4, 2)); + JPanel panel = new JPanel(new GridLayout(6, 2)); JLabel orderConfirmationLabel = new JLabel("Auftragsbestätigung:"); JComboBox orderConfirmationBox = new JComboBox<>(); for (Main.OrderConfirmation orderConfirmation : Main.orderConfirmations) { @@ -271,24 +290,27 @@ public class FakturamaGUI { selectedOrderConfirmation.status = "Lieferschein erstellt"; selectedOrderConfirmation.offer.status = "Lieferschein erstellt"; updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); panel.add(orderConfirmationLabel); panel.add(orderConfirmationBox); panel.add(dateLabel); panel.add(dateField); - panel.add(addButton); + panel.add(new JLabel()); + panel.add(new JLabel()); panel.add(backButton); + panel.add(addButton); - showPanel(panel); + mainPanel.add(panel, "CreateDeliveryNote"); + cardLayout.show(mainPanel, "CreateDeliveryNote"); } private void showCreateInvoicePanel() { - JPanel panel = new JPanel(new GridLayout(4, 2)); + JPanel panel = new JPanel(new GridLayout(6, 2)); JLabel deliveryNoteLabel = new JLabel("Lieferschein:"); JComboBox deliveryNoteBox = new JComboBox<>(); for (Main.DeliveryNote deliveryNote : Main.deliveryNotes) { @@ -309,34 +331,23 @@ public class FakturamaGUI { selectedDeliveryNote.orderConfirmation.status = "Rechnung erstellt"; selectedDeliveryNote.orderConfirmation.offer.status = "Rechnung erstellt"; updateTextArea(); + cardLayout.show(mainPanel, "Home"); }); JButton backButton = new JButton("Zurück"); - backButton.setBackground(new Color(255, 182, 193)); // Hellrot - backButton.addActionListener(e -> updateTextArea()); + backButton.addActionListener(e -> cardLayout.show(mainPanel, "Home")); panel.add(deliveryNoteLabel); panel.add(deliveryNoteBox); panel.add(dateLabel); panel.add(dateField); - panel.add(addButton); + panel.add(new JLabel()); + panel.add(new JLabel()); panel.add(backButton); + panel.add(addButton); - showPanel(panel); - } - - private void showPanel(JPanel panel) { - frame.getContentPane().removeAll(); - frame.getContentPane().add(panel, BorderLayout.CENTER); - frame.revalidate(); - frame.repaint(); - } - - private void showPanel(JScrollPane scrollPane) { - frame.getContentPane().removeAll(); - frame.getContentPane().add(scrollPane, BorderLayout.CENTER); - frame.revalidate(); - frame.repaint(); + mainPanel.add(panel, "CreateInvoice"); + cardLayout.show(mainPanel, "CreateInvoice"); } private void updateTextArea() { @@ -347,7 +358,7 @@ public class FakturamaGUI { } sb.append("\nArtikel:\n"); for (Main.Article article : Main.articles) { - sb.append(article.description).append(" - ").append(article.unit).append(" - ").append(article.netPrice).append(" € - ").append(article.vatRate).append(" %").append("\n"); + sb.append(article.id).append(": ").append(article.description).append(" - ").append(article.unit).append(" - ").append(article.netPrice).append(" € - ").append(article.vatRate).append(" %").append("\n"); } sb.append("\nAngebote:\n"); for (Main.Offer offer : Main.offers) { @@ -369,7 +380,6 @@ public class FakturamaGUI { sb.append("Rechnung #").append(invoice.id).append(" - ").append(invoice.deliveryNote.orderConfirmation.offer.customer.name).append(" - ").append(invoice.date).append(" - ").append(invoice.status).append("\n"); } textArea.setText(sb.toString()); - showPanel(new JScrollPane(textArea)); } public static void main(String[] args) { diff --git a/PR2 KI Projekt/src/Main.java b/PR2 KI Projekt/src/Main.java index aa60b1d..ef47cdc 100644 --- a/PR2 KI Projekt/src/Main.java +++ b/PR2 KI Projekt/src/Main.java @@ -665,14 +665,14 @@ public class Main { for (int i = 0; i < customerList.getLength(); i++) { Node customerNode = customerList.item(i); - if (customerNode.getNodeType() == Node.ELEMENT_NODE) { + if (customerNode != null && customerNode.getNodeType() == Node.ELEMENT_NODE) { Element customerElement = (Element) customerNode; - String name = customerElement.getElementsByTagName("Name").item(0).getTextContent(); - String address = customerElement.getElementsByTagName("Address").item(0).getTextContent(); - String contactPerson = customerElement.getElementsByTagName("ContactPerson").item(0).getTextContent(); - boolean taxExempt = Boolean.parseBoolean(customerElement.getElementsByTagName("TaxExempt").item(0).getTextContent()); - boolean smallBusiness = Boolean.parseBoolean(customerElement.getElementsByTagName("SmallBusiness").item(0).getTextContent()); + String name = getElementTextContent(customerElement, "Name"); + String address = getElementTextContent(customerElement, "Address"); + String contactPerson = getElementTextContent(customerElement, "ContactPerson"); + boolean taxExempt = Boolean.parseBoolean(getElementTextContent(customerElement, "TaxExempt")); + boolean smallBusiness = Boolean.parseBoolean(getElementTextContent(customerElement, "SmallBusiness")); customers.add(new Customer(name, address, contactPerson, taxExempt, smallBusiness)); } @@ -684,14 +684,14 @@ public class Main { for (int i = 0; i < articleList.getLength(); i++) { Node articleNode = articleList.item(i); - if (articleNode.getNodeType() == Node.ELEMENT_NODE) { + if (articleNode != null && articleNode.getNodeType() == Node.ELEMENT_NODE) { Element articleElement = (Element) articleNode; - int id = Integer.parseInt(articleElement.getElementsByTagName("ID").item(0).getTextContent()); - String unit = articleElement.getElementsByTagName("Unit").item(0).getTextContent(); - String description = articleElement.getElementsByTagName("Description").item(0).getTextContent(); - double netPrice = Double.parseDouble(articleElement.getElementsByTagName("NetPrice").item(0).getTextContent()); - double vatRate = Double.parseDouble(articleElement.getElementsByTagName("VatRate").item(0).getTextContent()); + int id = parseIntOrDefault(getElementTextContent(articleElement, "ID"), -1); + String unit = getElementTextContent(articleElement, "Unit"); + String description = getElementTextContent(articleElement, "Description"); + double netPrice = parseDoubleOrDefault(getElementTextContent(articleElement, "NetPrice"), 0.0); + double vatRate = parseDoubleOrDefault(getElementTextContent(articleElement, "VatRate"), 0.0); Article article = new Article(unit, description, netPrice, vatRate); article.id = id; // Set the ID explicitly @@ -705,15 +705,15 @@ public class Main { for (int i = 0; i < offerList.getLength(); i++) { Node offerNode = offerList.item(i); - if (offerNode.getNodeType() == Node.ELEMENT_NODE) { + if (offerNode != null && offerNode.getNodeType() == Node.ELEMENT_NODE) { Element offerElement = (Element) offerNode; - int id = Integer.parseInt(offerElement.getElementsByTagName("ID").item(0).getTextContent()); - String customerName = offerElement.getElementsByTagName("CustomerName").item(0).getTextContent(); + int id = parseIntOrDefault(getElementTextContent(offerElement, "ID"), -1); + String customerName = getElementTextContent(offerElement, "CustomerName"); Customer offerCustomer = customers.stream().filter(c -> c.name.equals(customerName)).findFirst().orElse(null); - String date = offerElement.getElementsByTagName("Date").item(0).getTextContent(); - String status = offerElement.getElementsByTagName("Status").item(0).getTextContent(); + String date = getElementTextContent(offerElement, "Date"); + String status = getElementTextContent(offerElement, "Status"); NodeList offerArticles = offerElement.getElementsByTagName("Article"); List
offerArticleList = new ArrayList<>(); @@ -721,10 +721,10 @@ public class Main { for (int j = 0; j < offerArticles.getLength(); j++) { Node offerArticleNode = offerArticles.item(j); - if (offerArticleNode.getNodeType() == Node.ELEMENT_NODE) { + if (offerArticleNode != null && offerArticleNode.getNodeType() == Node.ELEMENT_NODE) { Element offerArticleElement = (Element) offerArticleNode; - int articleId = Integer.parseInt(offerArticleElement.getElementsByTagName("ID").item(0).getTextContent()); + int articleId = parseIntOrDefault(getElementTextContent(offerArticleElement, "ID"), -1); Article offerArticle = articles.stream().filter(a -> a.id == articleId).findFirst().orElse(null); if (offerArticle != null) { @@ -745,15 +745,15 @@ public class Main { for (int i = 0; i < orderConfirmationList.getLength(); i++) { Node orderConfirmationNode = orderConfirmationList.item(i); - if (orderConfirmationNode.getNodeType() == Node.ELEMENT_NODE) { + if (orderConfirmationNode != null && orderConfirmationNode.getNodeType() == Node.ELEMENT_NODE) { Element orderConfirmationElement = (Element) orderConfirmationNode; - int id = Integer.parseInt(orderConfirmationElement.getElementsByTagName("ID").item(0).getTextContent()); - int offerId = Integer.parseInt(orderConfirmationElement.getElementsByTagName("OfferID").item(0).getTextContent()); + int id = parseIntOrDefault(getElementTextContent(orderConfirmationElement, "ID"), -1); + int offerId = parseIntOrDefault(getElementTextContent(orderConfirmationElement, "OfferID"), -1); Offer orderConfirmationOffer = offers.stream().filter(o -> o.id == offerId).findFirst().orElse(null); - String date = orderConfirmationElement.getElementsByTagName("Date").item(0).getTextContent(); - String status = orderConfirmationElement.getElementsByTagName("Status").item(0).getTextContent(); + String date = getElementTextContent(orderConfirmationElement, "Date"); + String status = getElementTextContent(orderConfirmationElement, "Status"); if (orderConfirmationOffer != null) { orderConfirmations.add(new OrderConfirmation(id, orderConfirmationOffer, date, status)); @@ -767,15 +767,15 @@ public class Main { for (int i = 0; i < deliveryNoteList.getLength(); i++) { Node deliveryNoteNode = deliveryNoteList.item(i); - if (deliveryNoteNode.getNodeType() == Node.ELEMENT_NODE) { + if (deliveryNoteNode != null && deliveryNoteNode.getNodeType() == Node.ELEMENT_NODE) { Element deliveryNoteElement = (Element) deliveryNoteNode; - int id = Integer.parseInt(deliveryNoteElement.getElementsByTagName("ID").item(0).getTextContent()); - int orderConfirmationId = Integer.parseInt(deliveryNoteElement.getElementsByTagName("OrderConfirmationID").item(0).getTextContent()); + int id = parseIntOrDefault(getElementTextContent(deliveryNoteElement, "ID"), -1); + int orderConfirmationId = parseIntOrDefault(getElementTextContent(deliveryNoteElement, "OrderConfirmationID"), -1); OrderConfirmation deliveryNoteOrderConfirmation = orderConfirmations.stream().filter(oc -> oc.id == orderConfirmationId).findFirst().orElse(null); - String date = deliveryNoteElement.getElementsByTagName("Date").item(0).getTextContent(); - String status = deliveryNoteElement.getElementsByTagName("Status").item(0).getTextContent(); + String date = getElementTextContent(deliveryNoteElement, "Date"); + String status = getElementTextContent(deliveryNoteElement, "Status"); if (deliveryNoteOrderConfirmation != null) { deliveryNotes.add(new DeliveryNote(id, deliveryNoteOrderConfirmation, date, status)); @@ -789,15 +789,15 @@ public class Main { for (int i = 0; i < invoiceList.getLength(); i++) { Node invoiceNode = invoiceList.item(i); - if (invoiceNode.getNodeType() == Node.ELEMENT_NODE) { + if (invoiceNode != null && invoiceNode.getNodeType() == Node.ELEMENT_NODE) { Element invoiceElement = (Element) invoiceNode; - int id = Integer.parseInt(invoiceElement.getElementsByTagName("ID").item(0).getTextContent()); - int deliveryNoteId = Integer.parseInt(invoiceElement.getElementsByTagName("DeliveryNoteID").item(0).getTextContent()); + int id = parseIntOrDefault(getElementTextContent(invoiceElement, "ID"), -1); + int deliveryNoteId = parseIntOrDefault(getElementTextContent(invoiceElement, "DeliveryNoteID"), -1); DeliveryNote invoiceDeliveryNote = deliveryNotes.stream().filter(dn -> dn.id == deliveryNoteId).findFirst().orElse(null); - String date = invoiceElement.getElementsByTagName("Date").item(0).getTextContent(); - String status = invoiceElement.getElementsByTagName("Status").item(0).getTextContent(); + String date = getElementTextContent(invoiceElement, "Date"); + String status = getElementTextContent(invoiceElement, "Status"); if (invoiceDeliveryNote != null) { invoices.add(new Invoice(id, invoiceDeliveryNote, date, status)); @@ -811,4 +811,33 @@ public class Main { e.printStackTrace(); } } + + private static String getElementTextContent(Element parentElement, String tagName) { + NodeList nodeList = parentElement.getElementsByTagName(tagName); + if (nodeList != null && nodeList.getLength() > 0) { + Node node = nodeList.item(0); + if (node != null) { + return node.getTextContent(); + } + } + return ""; + } + + private static int parseIntOrDefault(String str, int defaultValue) { + try { + return Integer.parseInt(str); + } catch (NumberFormatException e) { + return defaultValue; + } + } + + private static double parseDoubleOrDefault(String str, double defaultValue) { + try { + return Double.parseDouble(str); + } catch (NumberFormatException e) { + return defaultValue; + } + } + + }