src/main/java/com/example/views/FormView.java

@@ -76,6 +76,12 @@ vorname.setAutofocus(true);
                 .setToday(getTranslation("form.today"))
                 .setCancel(getTranslation("form.cancel")));
         TimePicker uhrzeit = new TimePicker(getTranslation("form.time"));
+        uhrzeit.setLocale(Locale.GERMANY);
+        uhrzeit.setI18n(new TimePicker.TimePickerI18n()
+                .setBadInputErrorMessage(getTranslation("form.time.badInput"))
+                .setRequiredErrorMessage(getTranslation("form.time.required"))
+                .setMinErrorMessage(getTranslation("form.time.min"))
+                .setMaxErrorMessage(getTranslation("form.time.max")));
 
         ComboBox<String> land = new ComboBox<>(getTranslation("form.country"));
         land.setItems(getTranslation("country.de"), getTranslation("country.at"),

src/main/resources/vaadin-i18n/translations.properties

@@ -55,6 +55,10 @@ form.save=Speichern
 form.reset=Zurücksetzen
 form.today=Heute
 form.cancel=Abbrechen
+form.time.badInput=Ungültige Uhrzeit
+form.time.required=Uhrzeit ist erforderlich
+form.time.min=Uhrzeit liegt vor der frühesten erlaubten Zeit
+form.time.max=Uhrzeit liegt nach der spätesten erlaubten Zeit
 
 country.de=Deutschland
 country.at=Österreich

src/main/resources/vaadin-i18n/translations_en.properties

@@ -55,6 +55,10 @@ form.save=Save
 form.reset=Reset
 form.today=Today
 form.cancel=Cancel
+form.time.badInput=Invalid time
+form.time.required=Time is required
+form.time.min=Time is before the earliest allowed time
+form.time.max=Time is after the latest allowed time
 
 country.de=Germany
 country.at=Austria

src/main/resources/vaadin-i18n/translations_es.properties

@@ -55,6 +55,10 @@ form.save=Guardar
 form.reset=Restablecer
 form.today=Hoy
 form.cancel=Cancelar
+form.time.badInput=Hora inválida
+form.time.required=La hora es obligatoria
+form.time.min=La hora es anterior a la hora mínima permitida
+form.time.max=La hora es posterior a la hora máxima permitida
 
 country.de=Alemania
 country.at=Austria