init

products.csv

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+Bleisitft h2; 0.75
+Bleistift h3; 0.75
+Bleistift h4; 0.75
+Kugelschreiber rot fein; 1.11
+Kugelschreiber blau fein; 1.11
+Textmarker gelb; 1.23
+Textmarker grün; 1.25
+Permanentmarker sw; 2.11
+Permanentmarker rt; 2.11

products2.csv

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+Keyboard de; 12.55
+Keyboard en; 13.55
+Mouse bluetooth; 32.12
+Mouse standard; 7.22
+Mouse wireless; 14.44

src/Application.java

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+
+public class Application {
+
+	public static void main(String[] args) {
+		OrderFrame bf = new OrderFrame();
+	}
+
+}

src/OrderFrame.java

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+import javax.swing.*;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+import javax.swing.filechooser.FileNameExtensionFilter;
+import java.awt.*;
+import java.io.*;
+import java.util.Vector;
+
+public class OrderFrame extends JFrame {
+    private static final long serialVersionUID = 1L;
+
+    private ProductPanel productPanel = new ProductPanel();
+    private JButton buttonOpen = new JButton("Open");
+
+    private Vector<Product> bla = new Vector();
+    private JList list;
+
+    // TODO: Add property for products
+
+    public OrderFrame() {
+        this.setTitle("Lukas HEiligenbrunner");
+        this.add(buttonOpen, BorderLayout.NORTH);
+        this.add(productPanel);
+
+        JFrame _this = this;
+        buttonOpen.addActionListener(e -> {
+            System.out.println("Btn clicked!");
+
+            JFileChooser chooser = new JFileChooser(new File("."));
+            FileNameExtensionFilter filter = new FileNameExtensionFilter("CSV Images", "csv");
+            chooser.setFileFilter(filter);
+
+            int returnVal = chooser.showOpenDialog(_this);
+            if (returnVal == JFileChooser.APPROVE_OPTION) {
+                System.out.println("You chose to open this file: " + chooser.getSelectedFile().getName());
+                try {
+                    openFileAndFillToListBox(chooser.getSelectedFile().getName());
+                    list.repaint();
+                } catch (WrongFileFormatException ee) {
+                    ee.printStackTrace();
+                    bla.clear();
+                }
+            }
+        });
+
+        try {
+            openFileAndFillToListBox("products.csv");
+        } catch (WrongFileFormatException e) {
+            e.printStackTrace();
+            bla.clear();
+        }
+
+
+        list = new JList(bla);
+        list.addListSelectionListener(new ListSelectionListener() {
+            @Override
+            public void valueChanged(ListSelectionEvent e) {
+
+                productPanel.setData(bla.get(e.getLastIndex()));
+                System.out.println("something was selected" + e.getLastIndex());
+
+            }
+        });
+        this.add(list, BorderLayout.WEST);
+
+
+        this.setSize(600, 400);
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        this.setVisible(true);
+    }
+
+    public void openFileAndFillToListBox(String filename) {
+        bla.clear();
+        File myfile = new File(filename);
+        try {
+            BufferedReader reader = new BufferedReader(new FileReader(myfile));
+
+            while (reader.ready()) {
+                String str = reader.readLine();
+                String[] stringsiarri = str.split(";");
+
+                if (stringsiarri.length != 2) {
+                    System.out.println("error occured");
+                    throw new WrongFileFormatException("too many rows");
+                }
+
+
+                try {
+                    Float.parseFloat(stringsiarri[1]);
+                } catch (NumberFormatException e) {
+                    // no float in csv
+                    throw new WrongFileFormatException("Wrong data type in csv");
+                }
+
+                Product tempproduct = new Product(stringsiarri[0], stringsiarri[1]);
+                bla.add(tempproduct);
+            }
+
+            reader.close();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}

src/Product.java

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+public class Product {
+    private String Name;
+    private String Price;
+
+    public Product(String name, String price) {
+        Name = name;
+        Price = price;
+    }
+
+    public Product() {}
+
+    public String getName() {
+        return Name;
+    }
+
+    public String getPrice() {
+        return Price;
+    }
+
+    @Override
+    public String toString() {
+        return Name;
+    }
+}

src/ProductPanel.java

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+import java.awt.BorderLayout;
+import java.awt.GridLayout;
+
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JTextField;
+
+class ProductDetails extends JPanel {
+	private static final long serialVersionUID = 8069232875557223123L;
+	
+	private JLabel lblName = new JLabel("Name:");
+	private JLabel lblPreis = new JLabel("Preis:");
+	private JTextField tfName = new JTextField();
+	private JTextField tfPrice = new JTextField();
+
+	public ProductDetails() {
+		this.setLayout(new GridLayout(2,2));
+		tfName.setHorizontalAlignment(JTextField.RIGHT);
+		tfPrice.setHorizontalAlignment(JTextField.RIGHT);
+		this.add(lblName);
+		this.add(tfName);
+		this.add(lblPreis);
+		this.add(tfPrice);
+	}
+
+	public void setData(Product p){
+		tfName.setText(p.getName());
+		tfPrice.setText(p.getPrice());
+	}
+}
+
+public class ProductPanel extends JPanel {
+
+	private static final long serialVersionUID = -8222745310953362748L;
+
+	private ProductDetails pProduktDetails = new ProductDetails();
+
+	public ProductPanel() {
+		this.setLayout(new BorderLayout());
+		this.add(pProduktDetails, BorderLayout.NORTH);
+	}
+
+	public void setData(Product p){
+		this.pProduktDetails.setData(p);
+	}
+}

src/WrongFileFormatException.java

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+public class WrongFileFormatException extends RuntimeException{
+    public WrongFileFormatException(String message) {
+        super(message);
+    }
+}