Добавлены свои классы исключений

ProjectStormtrooper/PlaneNotFoundException.java

@@ -0,0 +1,22 @@
+package ProjectStormtrooper;
+
+public class PlaneNotFoundException extends RuntimeException {
+    public PlaneNotFoundException() {
+    }
+
+    public PlaneNotFoundException(String message) {
+        super(message);
+    }
+
+    public PlaneNotFoundException(String message, Throwable exception) {
+        super(message, exception);
+    }
+
+    public PlaneNotFoundException(Throwable exception) {
+        super(exception);
+    }
+
+    protected PlaneNotFoundException(int pos) {
+        super("Не найден объект по позиции " + pos);
+    }
+}

ProjectStormtrooper/PlanesStorageOverflowException.java

@@ -0,0 +1,22 @@
+package ProjectStormtrooper;
+
+public class PlanesStorageOverflowException extends RuntimeException {
+    public PlanesStorageOverflowException() {
+    }
+
+    public PlanesStorageOverflowException(String message) {
+        super(message);
+    }
+
+    public PlanesStorageOverflowException(String message, Throwable exception) {
+        super(message, exception);
+    }
+
+    protected PlanesStorageOverflowException(Throwable exception) {
+        super(exception);
+    }
+
+    public PlanesStorageOverflowException(int count) {
+        super("В наборе превышено допустимое количество: " + count);
+    }
+}