From 141994f53368418ea217b970ce207f9d70c30680 Mon Sep 17 00:00:00 2001
From: Sergey Kozyrev <s.kozyrev-s@yandex.ru>
Date: Wed, 15 Nov 2023 14:23:41 +0400
Subject: [PATCH] +

---
 CollectionFrame.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CollectionFrame.java b/CollectionFrame.java
index 6f05f8b..a2656bc 100644
--- a/CollectionFrame.java
+++ b/CollectionFrame.java
@@ -50,7 +50,7 @@ class CollectionFrame extends JComponent {
     {
         if (JOptionPane.showConfirmDialog(null, "Delete Tanker?", "Delete", JOptionPane.YES_NO_OPTION) == JOptionPane.OK_OPTION)
         {
-            if (_tanks.minus(Integer.parseInt(text)))
+            if (_tanks.minus(Integer.parseInt(text)) != null)
             {
                 JOptionPane.showMessageDialog(null, "Объект удален", "Информация", JOptionPane.INFORMATION_MESSAGE);
                 super.repaint();