format

vaadin-spring/src/main/java/com/baeldung/EmployeeEditor.java

@@ -12,31 +12,17 @@
 import com.vaadin.flow.spring.annotation.UIScope;
 import org.springframework.beans.factory.annotation.Autowired;
 
-/**
- * A simple example to introduce building forms. As your real application is probably much
- * more complicated than this example, you could re-use this form in multiple places. This
- * example component is only used in MainView.
- * <p>
- * In a real world application you'll most likely using a common super class for all your
- * forms - less code, better UX.
- */
 @SpringComponent
 @UIScope
 public class EmployeeEditor extends VerticalLayout implements KeyNotifier {
 
     private final EmployeeRepository repository;
 
-    /**
-     * The currently edited employee
-     */
     private Employee employee;
 
-    /* Fields to edit properties in Employee entity */
     TextField firstName = new TextField("First name");
     TextField lastName = new TextField("Last name");
 
-    /* Action buttons */
-    // TODO why more code?
     Button save = new Button("Save", VaadinIcon.CHECK.create());
     Button cancel = new Button("Cancel");
     Button delete = new Button("Delete", VaadinIcon.TRASH.create());
@@ -51,18 +37,15 @@ public EmployeeEditor(EmployeeRepository repository) {
 
         add(firstName, lastName, actions);
 
-        // bind using naming convention
         binder.bindInstanceFields(this);
 
-        // Configure and style components
         setSpacing(true);
 
         save.getElement().getThemeList().add("primary");
         delete.getElement().getThemeList().add("error");
 
         addKeyPressListener(Key.ENTER, e -> save());
 
-        // wire action buttons to save, delete and reset
         save.addClickListener(e -> save());
         delete.addClickListener(e -> delete());
         cancel.addClickListener(e -> editEmployee(employee));
@@ -90,28 +73,18 @@ public final void editEmployee(Employee c) {
         }
         final boolean persisted = c.getId() != null;
         if (persisted) {
-            // Find fresh entity for editing
             employee = repository.findById(c.getId()).get();
         } else {
             employee = c;
         }
-        cancel.setVisible(persisted);
 
-        // Bind employee properties to similarly named fields
-        // Could also use annotation or "manual binding" or programmatically
-        // moving values from fields to entities before saving
+        cancel.setVisible(persisted);
         binder.setBean(employee);
-
         setVisible(true);
-
-        // Focus first name initially
         firstName.focus();
     }
 
     public void setChangeHandler(ChangeHandler h) {
-        // ChangeHandler is notified when either save or delete
-        // is clicked
         changeHandler = h;
     }
-
 }

vaadin-spring/src/main/java/com/baeldung/EmployeeRepository.java

@@ -1,9 +1,9 @@
 package com.baeldung;
 
-import org.springframework.data.jpa.repository.JpaRepository;
-
 import java.util.List;
 
+import org.springframework.data.jpa.repository.JpaRepository;
+
 public interface EmployeeRepository extends JpaRepository<Employee, Long> {
 
     List<Employee> findByLastNameStartsWithIgnoreCase(String lastName);

vaadin-spring/src/main/java/com/baeldung/MainView.java

@@ -1,5 +1,7 @@
 package com.baeldung;
 
+import org.springframework.util.StringUtils;
+
 import com.vaadin.flow.component.button.Button;
 import com.vaadin.flow.component.grid.Grid;
 import com.vaadin.flow.component.icon.VaadinIcon;
@@ -8,8 +10,6 @@
 import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.data.value.ValueChangeMode;
 import com.vaadin.flow.router.Route;
-import com.vaadin.flow.spring.annotation.UIScope;
-import org.springframework.util.StringUtils;
 
 @Route
 public class MainView extends VerticalLayout {
@@ -31,7 +31,6 @@ public MainView(EmployeeRepository repo, EmployeeEditor editor) {
         this.filter = new TextField();
         this.addNewBtn = new Button("New employee", VaadinIcon.PLUS.create());
 
-        // build layout
         HorizontalLayout actions = new HorizontalLayout(filter, addNewBtn);
         add(actions, grid, editor);
 
@@ -41,38 +40,28 @@ public MainView(EmployeeRepository repo, EmployeeEditor editor) {
 
         filter.setPlaceholder("Filter by last name");
 
-        // Hook logic to components
-
-        // Replace listing with filtered content when user changes filter
         filter.setValueChangeMode(ValueChangeMode.EAGER);
         filter.addValueChangeListener(e -> listEmployees(e.getValue()));
 
-        // Connect selected Employee to editor or hide if none is selected
         grid.asSingleSelect().addValueChangeListener(e -> {
             editor.editEmployee(e.getValue());
         });
 
-        // Instantiate and edit new Employee the new button is clicked
         addNewBtn.addClickListener(e -> editor.editEmployee(new Employee("", "")));
 
-        // Listen changes made by the editor, refresh data from backend
         editor.setChangeHandler(() -> {
             editor.setVisible(false);
             listEmployees(filter.getValue());
         });
 
-        // Initialize listing
         listEmployees(null);
     }
 
-    // tag::listEmployees[]
     void listEmployees(String filterText) {
         if (StringUtils.isEmpty(filterText)) {
             grid.setItems(employeeRepository.findAll());
         } else {
             grid.setItems(employeeRepository.findByLastNameStartsWithIgnoreCase(filterText));
         }
     }
-    // end::listEmployees[]
-
 }