java - Spring boot Crud Application with Jpa Repository

Question

 @Override
 public StudentEntity studentByUpdate(StudentEntity` studentEntity) {
        
      Optional <StudentEntity> studentDB= this.studentDataRepository.findById(studentEntity.getId());
      //here above optional line i am getting error when iam using optional here then why?? How resolve this error..error say wrap optional or changet to empty optional,
        
       if(studentDB.isPresent()) {
        
            StudentEntity studentUpdate=studentDB.get();
            studentUpdate.setId(studentEntity.getId());
            studentUpdate.setName(studentEntity.getName());
            studentUpdate.setEmail(studentEntity.getEmail());
            studentUpdate.setAddress(studentEntity.getAddress());
            return studentDataRepository.save(studentUpdate);
            
        }else{
            
            System.out.println("Records not found...??");
        }
        
    }

question from:https://stackoverflow.com/questions/65940584/spring-boot-crud-application-with-jpa-repository

Answer 1

Waitting for answers