src/BusesGenericCollection.java

@@ -1,10 +1,18 @@
 import java.awt.*;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.ArrayList;
+
 public class BusesGenericCollection<T extends DrawingBus, U extends IMoveableObject> {
     private int _pictureWidth;
     private int _pictureHeight;
     private final int _placeSizeWidth = 210;
     private final int _placeSizeHeight = 135;
     private SetGeneric<T> _collection;
+    public static char _separatorRecords = ';';
+    public static char _separatorForObject = ':';
+
     public BusesGenericCollection(int picWidth, int picHeight) {
         int width = picWidth / _placeSizeWidth;
         int height = picHeight / _placeSizeHeight;
@@ -12,36 +20,40 @@ public class BusesGenericCollection<T extends DrawingBus, U extends IMoveableObj
         _pictureHeight = picHeight;
         _collection = new SetGeneric<T>(width * height);
     }
-    public void showBuses(Graphics2D g){
+
+    public void showBuses(Graphics2D g) {
         drawBackground(g);
         drawObjects(g);
     }
-    public boolean insert(T obj)
-    {
+    public int getCount(){return _collection.getCount();}
+    public boolean insert(T obj) {
         if (obj != null)
             return _collection.insert(obj);
         return false;
     }
-    public boolean remove(int pos)
-    {
+
+    public boolean remove(int pos) {
         return _collection.remove(pos);
     }
+
     public U GetU(int pos) {
-        if(_collection.Get(pos) == null)
+        if (_collection.Get(pos) == null)
             return null;
-        return (U)_collection.Get(pos).GetMoveableObject();
+        return (U) _collection.Get(pos).GetMoveableObject();
     }
-    public T Get(int position){
-        if(position < 0 || position >= _collection.getCount())
+
+    public T Get(int position) {
+        if (position < 0 || position >= _collection.getCount())
             return null;
         return _collection.Get(position);
     }
+
     private void drawBackground(Graphics2D g) {
         BasicStroke pen = new BasicStroke(3);
         g.setStroke(pen);
         for (int i = 0; i < _pictureWidth / _placeSizeWidth; i++) {
             for (int j = 0; j < _pictureHeight / _placeSizeHeight +
-                    1; ++j) { g.drawLine(i * _placeSizeWidth, j *
+                    1; ++j) {g.drawLine(i * _placeSizeWidth, j *
                         _placeSizeHeight, i * _placeSizeWidth + _placeSizeWidth / 2, j *
                         _placeSizeHeight);
             }
@@ -49,10 +61,10 @@ public class BusesGenericCollection<T extends DrawingBus, U extends IMoveableObj
                     _placeSizeWidth, _pictureHeight / _placeSizeHeight * _placeSizeHeight);
         }
     }
+
     private void drawObjects(Graphics2D g) {
-        for(int i =0;i <_collection.getCount(); i++)
-        {
-            DrawingBus bus =_collection.Get(i);
+        for (int i = 0; i < _collection.getCount(); i++) {
+            DrawingBus bus = _collection.Get(i);
             if (bus != null) {
                 int inRow = _pictureWidth / _placeSizeWidth;
                 bus.setPosition(_placeSizeWidth * (inRow - 1) - (i % inRow * _placeSizeWidth), i / inRow * _placeSizeHeight);
@@ -60,5 +72,35 @@ public class BusesGenericCollection<T extends DrawingBus, U extends IMoveableObj
             }
         }
     }
+    public ArrayList<T> GetBuses(){
+        return _collection.GetBuses(_collection.getCount());
+    }
+    public boolean SaveData(File f, String name) throws IOException {
+        if(f.exists()) {
+            f.delete();
+        }
+        f.createNewFile();
+        StringBuilder data = new StringBuilder();
+        data.append("BusCollection\n");
+        data.append(String.format("%s\n", name));
+        StringBuilder records = new StringBuilder();
+        for(DrawingBus elem : GetBuses())
+        {
+            records.append(String.format("%s%c", ExtentionDrawingBus.GetDataForSave(elem, _separatorForObject),
+                    _separatorRecords));
+        }
+        data.append(records);
+        if(data.length() == 0)
+            return false;
+        FileWriter writer = new FileWriter(f);
+        writer.write(data.toString());
+        writer.flush();
+        writer.close();
+        return true;
+    }
+    public void Clear() {
+        _collection = new SetGeneric<>(_pictureWidth * _pictureHeight);
+
+    }
 }
 

src/BusesGenericStorage.java

@@ -1,8 +1,114 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.stream.Collectors;
+import javax.xml.crypto.dsig.keyinfo.KeyValue;
+import java.io.*;
+import java.util.*;
+import java.util.Queue;
 public class BusesGenericStorage {
-    final HashMap<String, BusesGenericCollection<DrawingBus, DrawingObjectBus>> _busStorages;
+    public HashMap<String, BusesGenericCollection<DrawingBus, DrawingObjectBus>> _busStorages;
+    private static final char _separatorForKeyValue = '|';
+    private final char _separatorRecords = ';';
+    private static final char _separatorForObject = ':';
+    public boolean SaveData(File f) throws IOException {
+        if(f.exists()) {
+            f.delete();
+        }
+        f.createNewFile();
+        StringBuilder data = new StringBuilder();
+        data.append("BusStorage\n");
+        for(Map.Entry<String, BusesGenericCollection<DrawingBus, DrawingObjectBus>> record : _busStorages.entrySet()){
+            StringBuilder records = new StringBuilder();
+            for(DrawingBus elem : record.getValue().GetBuses())
+            {
+                records.append(String.format("%s%c", ExtentionDrawingBus.GetDataForSave(elem, _separatorForObject),
+                        _separatorRecords));
+            }
+            data.append(String.format("%s%c%s\n", record.getKey(), _separatorForKeyValue, records.toString()));
+        }
+        if(data.length() == 0)
+            return false;
+        FileWriter writer = new FileWriter(f);
+        writer.write(data.toString());
+        writer.flush();
+        writer.close();
+        return true;
+    }
+    public boolean LoadData(File f) throws FileNotFoundException {
+        if(!f.exists())
+            return false;
+        StringBuilder bufferTextFromFile =new StringBuilder();
+        Scanner s = new Scanner(f);
+        while(s.hasNext())
+            bufferTextFromFile.append(s.next() + "\n");
+        s.close();
+        var strs = bufferTextFromFile.toString().split("\n");
+        if(strs == null || strs.length == 0)
+            return false;
+        if (!strs[0].startsWith("BusStorage"))
+            return false;
+        _busStorages.clear();
+        for(String data : strs){
+            String st = new String("\\" + Character.toString( _separatorForKeyValue));
+            String[]record = data.split(st);
+            if (record.length != 2)
+                continue;
+            BusesGenericCollection<DrawingBus, DrawingObjectBus> collection =
+                    new BusesGenericCollection<>(_pictureWidth, _pictureHeight);
+            String[] set = record[1].split(Character.toString(_separatorRecords));
+
+            for(int i = set.length -1; i >=0; i--){
+                String elem = set[i];
+                DrawingBus bus = ExtentionDrawingBus.CreateDrawingBus(elem,
+                        _separatorForObject, _pictureWidth, _pictureHeight);
+                if (bus != null)
+                {
+                    if (!(collection.insert(bus)))
+                    {
+                        return false;
+                    }
+                }
+            }
+            _busStorages.put(record[0], collection);
+        }
+        return true;
+    }
+
+    public boolean LoadCollection(File f) throws FileNotFoundException {
+        if(!f.exists())
+            return false;
+        StringBuilder bufferTextFromFile =new StringBuilder();
+        Scanner s = new Scanner(f);
+        while(s.hasNext())
+            bufferTextFromFile.append(s.next() + "\n");
+        s.close();
+        var strs = bufferTextFromFile.toString().split("\n");
+        if(strs == null || strs.length == 0)
+            return false;
+        if (!strs[0].startsWith("BusCollection"))
+            return false;
+        String collectionName = strs[1];
+        BusesGenericCollection<DrawingBus, DrawingObjectBus> collection = getCollection(collectionName);
+        if(collection == null)
+            collection = new BusesGenericCollection<>(_pictureWidth, _pictureHeight);
+        else
+            collection.Clear();
+        String[] busesInfo = strs[2].split(Character.toString(BusesGenericCollection._separatorRecords));
+        for(int i = busesInfo.length-1; i >= 0; i--){
+            String data = busesInfo[i];
+            DrawingBus bus = ExtentionDrawingBus.CreateDrawingBus(data,
+                    BusesGenericCollection._separatorForObject, _pictureWidth, _pictureHeight);
+            if (bus != null)
+            {
+                if (!(collection.insert(bus)))
+                {
+                    return false;
+                }
+            }
+        }
+        AddSetFromFile(collectionName, collection);
+        return true;
+    }
     public List<String> Keys(){
         if(_busStorages == null)
             return null;
@@ -23,9 +129,12 @@ public class BusesGenericStorage {
         _busStorages.put(name, new BusesGenericCollection<>(_pictureWidth, _pictureHeight));
     }
 
-    public void delSet(String name){
+    public void delSet(String name, Queue<DrawingBus> trashBox){
         if(!_busStorages.containsKey(name))
             return;
+        BusesGenericCollection<DrawingBus, DrawingObjectBus> cur = _busStorages.get(name);
+        for(int i = 0; i < cur.getCount(); i++)
+            trashBox.add(cur.Get(i));
         _busStorages.remove(name);
     }
 
@@ -38,4 +147,13 @@ public class BusesGenericStorage {
     public DrawingBus Get(String collectionName, int position){
         return _busStorages.get(collectionName).Get(position);
     }
+    public void AddSetFromFile(String name, BusesGenericCollection<DrawingBus, DrawingObjectBus> toAdd){
+        if(_busStorages.containsKey(name)){
+            _busStorages.remove(name);
+        }
+        _busStorages.put(name, toAdd);
+    }
+    public BusesGenericCollection<DrawingBus, DrawingObjectBus> GetCollection(String collectionName){
+        return _busStorages.get(collectionName);
+    }
 }

src/DrawingBus.java

@@ -23,7 +23,7 @@ public class DrawingBus {
     public int getHeight() {
         return busHeight;
     }
-    private IDrawDoors drawingDoors;
+    public IDrawDoors drawingDoors;
     public DrawingBus(int speed, double weight, Color bodyColor, int width, int height, int doorsNumber, int doorsType) {
         if (width < busWidth || height < busHeight)
             return;

src/ExtentionDrawingBus.java

@@ -0,0 +1,75 @@
+import java.awt.*;
+public class ExtentionDrawingBus {
+    private static String getName(Color col){
+        if(col.equals(Color.RED))
+            return "RED";
+        if(col.equals(Color.GREEN))
+            return "GREEN";
+        if(col.equals(Color.BLUE))
+            return "BLUE";
+        if(col.equals(Color.YELLOW))
+            return "YELLOW";
+        if(col.equals(Color.WHITE))
+            return "WHITE";
+        if(col.equals(Color.GRAY))
+            return "GRAY";
+        if(col.equals(Color.BLACK))
+            return "BLACK";
+        if(col.equals(Color.MAGENTA))
+            return "MAGENTA";
+        return null;
+    }
+
+    private static Color getColor(String col){
+        if(col.equals("RED"))
+            return Color.RED;
+        if(col.equals("GREEN"))
+            return Color.GREEN;
+        if(col.equals("BLUE"))
+            return Color.BLUE;
+        if(col.equals("YELLOW"))
+            return Color.YELLOW;
+        if(col.equals("WHITE"))
+            return Color.WHITE;
+        if(col.equals("GRAY"))
+            return Color.GRAY;
+        if(col.equals("BLACK"))
+            return Color.BLACK;
+        if(col.equals("MAGENTA"))
+            return Color.MAGENTA;
+        return null;
+    }
+    public static DrawingBus CreateDrawingBus(String info, char separatorForObject, int width, int height){
+        String[] strs = info.split(Character.toString(separatorForObject));
+        if(strs.length == 5){
+            return new DrawingBus(Integer.parseInt(strs[0]),
+                    Integer.parseInt(strs[1]), getColor(strs[2]),
+                    width, height, Integer.parseInt(strs[3]), Integer.parseInt(strs[4]));
+        }
+        if(strs.length == 8){
+            return new DrawingTrolleybus(Integer.parseInt(strs[0]),
+                    Integer.parseInt(strs[1]), getColor(strs[2]),
+                    getColor(strs[7]),Boolean.parseBoolean(strs[5]),
+                    Boolean.parseBoolean(strs[6]), width, height,
+                    Integer.parseInt(strs[3]), Integer.parseInt(strs[4]));
+        }
+        return null;
+    }
+    public static String GetDataForSave(DrawingBus DrawingBus, char separatorForObject){
+        var bus = DrawingBus.getEntityBus();
+        if(bus == null)
+            return null;
+        var str = String.format("%d%c%d%c%s%c%d%c%d", bus.getSpeed(),
+                separatorForObject, (int)bus.getWeight(),
+                separatorForObject, getName(bus.getBodyColor()),
+                separatorForObject, DrawingBus.drawingDoors.getType(),
+                separatorForObject, DrawingBus.drawingDoors.getNumber());
+        if(!(bus instanceof EntityTrolleybus)){
+            return str;
+        }
+        return String.format("%s%c%b%c%b%c%s", str, separatorForObject,
+                ((EntityTrolleybus) bus).getRoga(), separatorForObject,
+                ((EntityTrolleybus) bus).getBattery(), separatorForObject,
+                getName(((EntityTrolleybus) bus).getAdditionalColor()));
+    }
+}

src/FrameBusCollection.java

@@ -1,13 +1,12 @@
 import javax.swing.*;
 import javax.swing.border.StrokeBorder;
 import java.awt.*;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.io.IOException;
 import java.util.List;
 import java.util.Objects;
 import java.util.ArrayDeque;
 import java.util.Queue;
+import java.io.File;
 
 public class FrameBusCollection extends JFrame {
     private BusesGenericStorage storage;
@@ -16,18 +15,20 @@ public class FrameBusCollection extends JFrame {
     JComponent pictureBoxCollection;
     TextField textFieldNumber;
     TextField textFieldStorageName;
-    Queue <DrawingBus> queue = new ArrayDeque<>();
-    public FrameBusCollection(){
+    Queue<DrawingBus> trashCollection = new ArrayDeque<>();
+
+    public FrameBusCollection() {
         super("Набор автобусов");
-        setSize(new Dimension(1000,500));
+        setSize(new Dimension(1000, 500));
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         createGui();
-        storage = new BusesGenericStorage(pictureBoxCollection.getWidth(),pictureBoxCollection.getHeight());
+        storage = new BusesGenericStorage(pictureBoxCollection.getWidth(), pictureBoxCollection.getHeight());
         setVisible(true);
     }
-    private void createGui(){
-        pictureBoxCollection = new JComponent(){
-            public void paintComponent(Graphics graphics){
+
+    private void createGui() {
+        pictureBoxCollection = new JComponent() {
+            public void paintComponent(Graphics graphics) {
                 super.paintComponent(graphics);
                 Graphics2D graphics2D = (Graphics2D) graphics;
                 if (listBoxStorages == null || storage == null)
@@ -39,7 +40,19 @@ public class FrameBusCollection extends JFrame {
                 super.repaint();
             }
         };
-        pictureBoxCollection.setSize(new Dimension(700,450));
+        JMenuBar menuFile = new JMenuBar();
+        JMenu file = new JMenu("Файл");
+        menuFile.add(file);
+        JMenuItem saveFile = new JMenuItem("Сохранить");
+        JMenuItem loadFile = new JMenuItem("Загрузить");
+        JMenuItem saveCollection = new JMenuItem("Сохранить коллекцию");
+        JMenuItem loadCollection = new JMenuItem("Загрузить коллекцию");
+        file.add(saveCollection);
+        file.add(loadCollection);
+        file.add(saveFile);
+        file.add(loadFile);
+        setJMenuBar(menuFile);
+        pictureBoxCollection.setSize(new Dimension(700, 450));
         JButton buttonAddBus = new JButton("Добавить автобус");
         textFieldNumber = new TextField();
         textFieldStorageName = new TextField();
@@ -48,7 +61,7 @@ public class FrameBusCollection extends JFrame {
         JButton buttonRefreshCollection = new JButton("Обновить коллекцию");
         JButton buttonAddCollection = new JButton("Добавить набор");
         listBoxModel = new DefaultListModel<>();
-        listBoxStorages= new JList<>(listBoxModel);
+        listBoxStorages = new JList<>(listBoxModel);
         scrollPane.setViewportView(listBoxStorages);
         JButton buttonDeleteCollection = new JButton("Удалить набор");
         JButton buttonTrash = new JButton("Корзина");
@@ -58,13 +71,17 @@ public class FrameBusCollection extends JFrame {
         buttonAddCollection.addActionListener(e -> buttonAddCollectionClick());
         buttonDeleteCollection.addActionListener(e -> buttonDeleteCollectionClick());
         buttonTrash.addActionListener(e -> buttonTrashClick());
+        saveFile.addActionListener(e -> saveFile());
+        saveCollection.addActionListener(e -> saveCollection());
+        loadFile.addActionListener(e -> loadFile());
+        loadCollection.addActionListener(e -> loadCollection());
         JPanel panelTools = new JPanel(new GridBagLayout());
         panelTools.setBorder(new StrokeBorder(new BasicStroke(3)));
         JPanel panelCollection = new JPanel(new GridBagLayout());
         panelCollection.setBorder(new StrokeBorder(new BasicStroke(3)));
         GridBagConstraints constraints = new GridBagConstraints();
-        constraints.insets.left =  constraints.insets.right = 5;
-        constraints.insets.top = constraints.insets.bottom = 5;
+        constraints.insets.left = constraints.insets.right = 5;
+        constraints.insets.top = constraints.insets.bottom = 4;
         constraints.fill = GridBagConstraints.BOTH;
         constraints.gridx = 0;
         constraints.gridy = 0;
@@ -96,33 +113,31 @@ public class FrameBusCollection extends JFrame {
         constraints.gridx = 0;
         constraints.gridy = 5;
         panelTools.add(buttonTrash, constraints);
-
         setLayout(new BorderLayout());
         add(panelTools, BorderLayout.EAST);
-        add(pictureBoxCollection,BorderLayout.CENTER);
+        add(pictureBoxCollection, BorderLayout.CENTER);
     }
-    private void buttonAddBusClick(){
-        if(listBoxStorages.getSelectedIndex() == -1) {
+
+    private void buttonAddBusClick() {
+        if (listBoxStorages.getSelectedIndex() == -1) {
             return;
         }
         BusesGenericCollection<DrawingBus, DrawingObjectBus> drawingBuses = storage.getCollection(listBoxStorages.getSelectedValue());
         FrameBusConfig frameBusConfig = new FrameBusConfig();
         frameBusConfig.addButton.addActionListener(e -> {
-            if (drawingBuses.insert(frameBusConfig.drawingBus))
-            {
+            if (drawingBuses.insert(frameBusConfig.drawingBus)) {
                 frameBusConfig.dispose();
                 frameBusConfig.drawingBus.pictureWidth = pictureBoxCollection.getWidth();
                 frameBusConfig.drawingBus.pictureHeight = pictureBoxCollection.getHeight();
                 JOptionPane.showMessageDialog(null, "Объект добавлен", "Информация", JOptionPane.INFORMATION_MESSAGE);
                 pictureBoxCollection.repaint();
-            }
-            else
-            {
+            } else {
                 JOptionPane.showMessageDialog(null, "Не удалось добавить объект", "Информация", JOptionPane.INFORMATION_MESSAGE);
             }
         });
         frameBusConfig.cancelButton.addActionListener(e -> frameBusConfig.dispose());
     }
+
     private void buttonRemoveBusClick() {
         if (listBoxStorages.getSelectedIndex() == -1)
             return;
@@ -130,34 +145,34 @@ public class FrameBusCollection extends JFrame {
         if (obj == null)
             return;
         int pos = Integer.parseInt(textFieldNumber.getText());
-        queue.add(obj.Get(pos));
-        if (obj.remove(pos))
-        {
-            JOptionPane.showMessageDialog(this,"Объект удалён");
+        trashCollection.add(obj.Get(pos));
+        if (obj.remove(pos)) {
+            JOptionPane.showMessageDialog(this, "Объект удалён");
             pictureBoxCollection.repaint();
-        }
-        else
-        {
-            JOptionPane.showMessageDialog(this,"Не удалось удалить объект");
+        } else {
+            JOptionPane.showMessageDialog(this, "Не удалось удалить объект");
         }
     }
-    private void buttonRefreshBusClick(){
+
+    private void buttonRefreshBusClick() {
         pictureBoxCollection.repaint();
     }
-    private void reloadObjects(){
+
+    private void reloadObjects() {
         int index = listBoxStorages.getSelectedIndex();
         listBoxModel.clear();
         List<String> keys = storage.Keys();
         for (String key : keys) {
             listBoxModel.addElement(key);
         }
-        if(listBoxModel.size() > 0 && (index == -1 || index >= listBoxModel.size()))
+        if (listBoxModel.size() > 0 && (index == -1 || index >= listBoxModel.size()))
             listBoxStorages.setSelectedIndex(0);
-        else if(listBoxModel.size() > 0)
+        else if (listBoxModel.size() > 0)
             listBoxStorages.setSelectedIndex(index);
     }
+
     private void buttonAddCollectionClick() {
-        if(textFieldStorageName.getText() == null ) {
+        if (textFieldStorageName.getText() == null) {
             JOptionPane.showMessageDialog(this, "Не все данные заполнены");
             return;
         }
@@ -169,23 +184,92 @@ public class FrameBusCollection extends JFrame {
         storage.addSet(name);
         reloadObjects();
     }
+
     private void buttonDeleteCollectionClick() {
         if (listBoxStorages.getSelectedIndex() == -1)
             return;
-        storage.delSet(listBoxStorages.getSelectedValue());
+        storage.delSet(listBoxStorages.getSelectedValue(), trashCollection);
         reloadObjects();
     }
-    private  void buttonTrashClick(){
-        if(queue.size() == 0)
+
+    private void buttonTrashClick() {
+        if (trashCollection.size() == 0)
             return;
         FrameTrolleybus frame;
-        try{
+        try {
             frame = new FrameTrolleybus();
-            frame.ChangeTrolleybus(queue.peek());
-            queue.remove();
-        }
-        catch (IOException e){
+            frame.ChangeTrolleybus(trashCollection.peek());
+            trashCollection.remove();
+        } catch (IOException e) {
             throw new RuntimeException();
         }
     }
+
+    private void saveFile() {
+        JFileChooser fc = new JFileChooser("C:\\Users\\niyaz\\OneDrive\\Документы");
+        fc.addChoosableFileFilter(new TxtSaveFilter());
+        int retrieval = fc.showSaveDialog(null);
+
+        if (retrieval == JFileChooser.APPROVE_OPTION) {
+            File file = new File(fc.getSelectedFile() + "." + "txt");
+
+            try {
+                storage.SaveData(file);
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+    }
+
+    private void saveCollection() {
+        JFileChooser fc = new JFileChooser("C:\\Users\\niyaz\\OneDrive\\Документы");
+        fc.addChoosableFileFilter(new TxtSaveFilter());
+        int retrieval = fc.showSaveDialog(null);
+        if (retrieval == JFileChooser.APPROVE_OPTION) {
+            File file = new File(fc.getSelectedFile() + "." + "txt");
+
+            try {
+                if (listBoxStorages.getSelectedIndex() == -1) {
+                    return;
+                }
+                storage._busStorages.get(listBoxStorages.getSelectedValue()).SaveData(file, listBoxStorages.getSelectedValue());
+                reloadObjects();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+    }
+
+    private void loadFile() {
+        JFileChooser fc = new JFileChooser("C:\\Users\\niyaz\\OneDrive\\Документы");
+        fc.addChoosableFileFilter(new TxtSaveFilter());
+        int ret = fc.showDialog(null, "Открыть файл");
+        if (ret == JFileChooser.APPROVE_OPTION) {
+            File file = fc.getSelectedFile();
+            try {
+                storage.LoadData(file);
+                reloadObjects();
+                pictureBoxCollection.repaint();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+
+    }
+
+    private void loadCollection() {
+        JFileChooser fc = new JFileChooser("C:\\Users\\niyaz\\OneDrive\\Документы");
+        int ret = fc.showDialog(null, "Открыть файл");
+        if (ret == JFileChooser.APPROVE_OPTION) {
+            File file = fc.getSelectedFile();
+            try {
+                storage.LoadCollection(file);
+                reloadObjects();
+                pictureBoxCollection.repaint();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+
+    }
 }

src/TxtSaveFilter.java

@@ -0,0 +1,20 @@
+import javax.swing.filechooser.FileFilter;
+import java.io.File;
+
+public class TxtSaveFilter extends FileFilter {
+    @Override
+    public boolean accept(File f) {
+        if (f.isDirectory()) {
+            return false;
+        }
+
+        String s = f.getName().toLowerCase();
+
+        return s.endsWith(".txt");
+    }
+
+    @Override
+    public String getDescription() {
+        return "*.txt";
+    }
+}