se agrego la validacion para que muestre el uload para subir archivos o el grid en base a si hay o no registros en la tabla

src/main/java/mx/gob/jumapacelaya/datasource/MysqlDataSource.java

@@ -28,4 +28,4 @@ public class MysqlDataSource {
     public JdbcTemplate mysqlTemplate(@Qualifier("mysqlDB") DataSource mysqlDB) {
         return new JdbcTemplate(mysqlDB);
     }
-}
+}

src/main/java/mx/gob/jumapacelaya/ui/PlanAnualView.java

@@ -54,6 +54,8 @@ public class PlanAnualView extends VerticalLayout {
     DatabaseService databaseService = new DatabaseService();
     Button btnInsertar;
     private byte[] fileContent;
+    VerticalLayout gridLayout = new VerticalLayout();
+    HorizontalLayout uploadLayout = new HorizontalLayout();
 
     public PlanAnualView() {
         setupHeader();
@@ -129,12 +131,11 @@ public class PlanAnualView extends VerticalLayout {
         btnInsertar = new Button("Insertar archivo", event -> insertarDatos());
         btnInsertar.setVisible(false);
 
-        VerticalLayout gridLayout = new VerticalLayout();
-        gridLayout.setSizeFull();
         gridLayout.add(planAnualGrid);
+        gridLayout.setSizeFull();
 
-        HorizontalLayout uploadLayout = new HorizontalLayout();
         uploadLayout.add(upload, btnInsertar);
+        toggleLayouts(dataView);
 
 
         this.setPadding(false);
@@ -354,4 +355,12 @@ public class PlanAnualView extends VerticalLayout {
                     || value.toLowerCase().contains(searchTerm.toLowerCase());
         }
     }
+
+
+    private void toggleLayouts(GridListDataView<PlanAnual> dataView) {
+        boolean hasItems = dataView.getItemCount() > 0;
+
+        gridLayout.setVisible(hasItems);
+        uploadLayout.setVisible(!hasItems);
+    }
 }