Work is done 06

FormMapWithSetArtilleries.java

@@ -97,6 +97,43 @@ public class FormMapWithSetArtilleries extends JFrame {
         });
         fileMenu.add(loadMenuItem);
 
+        JMenuItem saveMapMenuItem = new JMenuItem("Сохранить карту");
+        saveMapMenuItem.addActionListener(e -> {
+            JFileChooser dialog = new JFileChooser();
+            dialog.setFileFilter(new FileNameExtensionFilter("TXT file", "txt"));
+            dialog.showSaveDialog(this);
+
+            try {
+                if (_mapsCollection.saveMap(Optional.ofNullable(listBoxMaps.getSelectedValue()).orElse(""), dialog.getSelectedFile().getAbsolutePath())) {
+                    JOptionPane.showMessageDialog(this, "Сохранение прошло успешно", "Успех", JOptionPane.INFORMATION_MESSAGE);
+                } else {
+                    JOptionPane.showMessageDialog(this, "Не сохранилось", "Провал", JOptionPane.INFORMATION_MESSAGE);
+                }
+            } catch (IOException ex) {
+                ex.printStackTrace();
+            }
+        });
+        fileMenu.add(saveMapMenuItem);
+
+        JMenuItem loadMapMenuItem = new JMenuItem("Загрузить карту");
+        loadMapMenuItem.addActionListener(e -> {
+            JFileChooser dialog = new JFileChooser();
+            dialog.setFileFilter(new FileNameExtensionFilter("TXT file", "txt"));
+            dialog.showOpenDialog(this);
+
+            try {
+                if (_mapsCollection.loadMap(dialog.getSelectedFile().getAbsolutePath())) {
+                    reloadMaps();
+                    JOptionPane.showMessageDialog(this, "Загрузка прошла успешно", "Успех", JOptionPane.INFORMATION_MESSAGE);
+                } else {
+                    JOptionPane.showMessageDialog(this, "Не загрузилось", "Провал", JOptionPane.INFORMATION_MESSAGE);
+                }
+            } catch (IOException ex) {
+                ex.printStackTrace();
+            }
+        });
+        fileMenu.add(loadMapMenuItem);
+
         setJMenuBar(menuBar);
 
         comboBoxMapSelector.removeAllItems();

MapWithSetArtilleriesGeneric.java

@@ -19,6 +19,10 @@ public class MapWithSetArtilleriesGeneric<T extends IDrawingObject, U extends Ab
         _map = map;
     }
 
+    public U getMap() {
+        return _map;
+    }
+
     public int addArtillery(T artillery) {
         return _setArtilleries.insert(artillery);
     }

MapsCollection.java

@@ -59,8 +59,6 @@ public class MapsCollection {
             for (var storage : _mapsStorage.entrySet()) {
                 writer.println(String.format("%s%c%s", storage.getKey(), separatorDict, storage.getValue().getData(separatorDict, separatorData)));
             }
-
-            writer.flush();
         }
 
         return true;
@@ -97,4 +95,75 @@ public class MapsCollection {
 
         return true;
     }
+
+    @SuppressWarnings("ResultOfMethodCallIgnored")
+    public boolean saveMap(String mapName, String filename) throws IOException {
+        File file = new File(filename);
+
+        if (file.exists()) {
+            file.delete();
+        }
+
+        file.createNewFile();
+
+        MapWithSetArtilleriesGeneric<IDrawingObject, AbstractMap> map = _mapsStorage.getOrDefault(mapName, null);
+
+        if (map == null) {
+            return false;
+        }
+
+        try (PrintWriter writer = new PrintWriter(file)) {
+            writer.println("Map");
+            writer.println(mapName);
+            writer.println(map.getMap().getClass().getSimpleName());
+
+            for (var artillery : map._setArtilleries.getArtilleries()) {
+                writer.println(artillery.getInfo());
+            }
+        }
+
+        return true;
+    }
+
+    public boolean loadMap(String filename) throws IOException {
+        File file = new File(filename);
+
+        if (!file.exists()) {
+            return false;
+        }
+
+        try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+            String currentLine = reader.readLine();
+
+            if (currentLine == null || !currentLine.contains("Map")) {
+                return false;
+            }
+
+            String mapName = reader.readLine();
+
+            MapWithSetArtilleriesGeneric<IDrawingObject, AbstractMap> map;
+            if (_mapsStorage.containsKey(mapName)) {
+                map = _mapsStorage.get(mapName);
+                if (!map.getMap().getClass().getSimpleName().equals(reader.readLine())) {
+                    return false;
+                }
+            } else {
+                map = switch (reader.readLine()) {
+                    case "SimpleMap" -> new MapWithSetArtilleriesGeneric<>(_pictureWidth, _pictureHeight, new SimpleMap());
+                    case "ForestMap" -> new MapWithSetArtilleriesGeneric<>(_pictureWidth, _pictureHeight, new ForestMap());
+                    default -> null;
+                };
+            }
+
+            map._setArtilleries.clear();
+
+            while ((currentLine = reader.readLine()) != null) {
+                map._setArtilleries.insert(DrawingObjectArtillery.create(currentLine));
+            }
+
+            _mapsStorage.put(mapName, map);
+        }
+
+        return true;
+    }
 }

SetArtilleriesGeneric.java

@@ -53,4 +53,8 @@ public class SetArtilleriesGeneric<T> {
     public Iterable<T> getArtilleries() {
         return () -> _places.stream().filter(Objects::nonNull).iterator();
     }
+
+    public void clear() {
+        _places.clear();
+    }
 }