Классы исключений и подключение логера.

Project/Project.iml

@@ -7,5 +7,14 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/../../../../../log4j-1.2.17/apache-log4j-1.2.17/log4j-1.2.17.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
   </component>
 </module>

Project/SaveData.txt

@@ -0,0 +1,2 @@
+MapsCollection
+123|SimpleMap|1000:750:-256;

Project/logs.log

@@ -0,0 +1,3 @@
+2022-12-02 15:37:35 INFO  Main:17 - ШАЛОМ ЁМАНА :)))
+  2022-12-02 15:41:33 INFO  Main:17 - ШАЛОМ ЁМАНА :)))
+  2022-12-02 15:42:13 INFO  Main:17 - ШАЛОМ ЁМАНА :)))

Project/src/FormMapWithSetPlanesGeneric.java

@@ -1,3 +1,4 @@
+import org.apache.log4j.Logger;
 import javax.imageio.ImageIO;
 import javax.swing.*;
 import javax.swing.event.ListSelectionEvent;
@@ -40,6 +41,9 @@ public class FormMapWithSetPlanesGeneric extends JFrame{
     //объект от коллекции карт
     private final MapsCollection _mapsCollection;
 
+    //логгер
+    private static Logger logger = Logger.getLogger(Main.class);
+
     //Для выпадающего списка
     HashMap<String, AbstractMap> _mapsHashMap = new HashMap<>()
     {{

Project/src/PlaneNotFoundException.java

@@ -0,0 +1,10 @@
+public class PlaneNotFoundException extends Exception
+{
+    public PlaneNotFoundException(int i) {super ("Не найден объект по позиции" + i); }
+
+    public PlaneNotFoundException() { super(); }
+
+    public PlaneNotFoundException(String message)  { super(message); }
+
+    public PlaneNotFoundException(String message, Exception exception) { super(message, exception); }
+}

Project/src/StorageOverflowException.java

@@ -0,0 +1,10 @@
+public class StorageOverflowException extends Exception
+{
+    public StorageOverflowException(int count) {super("В наборе превышено допустимое количество: " + count);}
+
+    public StorageOverflowException() { super(); }
+
+    public StorageOverflowException(String message) { super(message); }
+
+    public StorageOverflowException(String message, Exception exception) { super(message, exception); }
+}

Project/src/log4j.properties

@@ -0,0 +1,16 @@
+# Root logger option
+log4j.rootLogger=INFO, file, stdout  
+
+# Direct log messages to a log file
+log4j.appender.file=org.apache.log4j.RollingFileAppender  
+log4j.appender.file.File=C:\logs.log  
+log4j.appender.file.MaxFileSize=10MB  
+log4j.appender.file.MaxBackupIndex=10  
+log4j.appender.file.layout=org.apache.log4j.PatternLayout  
+log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
+
+# Direct log messages to stdout
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender  
+log4j.appender.stdout.Target=System.out  
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout  
+log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n