Create service for managing students

grails/grails-app/services/com/baeldung/grails/StudentService.groovy

@@ -0,0 +1,23 @@
+package com.baeldung.grails
+
+import grails.gorm.transactions.Transactional
+
+@Transactional
+class StudentService {
+
+    def get(id){
+        Student.get(id)
+    }
+
+    def list() {
+        Student.list()
+    }
+
+    def save(student){
+        student.save()
+    }
+
+    def delete(id){
+        Student.get(id).delete()
+    }
+}