упорядочил папки с кодом.

src/Common/UI/Windows/Main/TestsForm.java

@@ -0,0 +1,26 @@
+package Common.UI.Windows.Main;
+import Common.Global;
+import Common.UI.Windows.Interface.FormWithSplitters;
+import Common.UI.Windows.Interface.TestsWindow;
+
+import javax.swing.*;
+public class TestsForm implements TestsWindow, FormWithSplitters {
+    private JPanel content;
+    public JSplitPane SC45;
+    private JPanel groupsBackground;
+    private JPanel groupsPanel;
+    private JPanel testsPanel;
+    @Override
+    public JPanel getContent() {
+        return content;
+    }
+    @Override
+    public void ShowAll() {
+        Global.testingServer.db.groups.ShowUI();
+    }
+    public TestsForm(){
+        LoadSplitters();
+        Global.testingServer.db.groups.mountUI(groupsPanel);
+        Global.testingServer.db.tests.mountUI(testsPanel);
+    }
+}