Improved logic, broke down in classes, Thread quicker

Lab3/src/main/java/org/lumijiez/Main.java

@@ -3,9 +3,16 @@ package org.lumijiez;
 import org.lumijiez.gui.MainFrame;
 
 import javax.swing.*;
+import java.io.IOException;
 
 public class Main {
     public static void main(String[] args) {
-        SwingUtilities.invokeLater(() -> new MainFrame().setVisible(true));
+        SwingUtilities.invokeLater(() -> {
+            try {
+                new MainFrame().setVisible(true);
+            } catch (IOException e) {
+                throw new RuntimeException(e);
+            }
+        });
     }
 }