Eliminate the writing of 'if () else{}'

• If person The name of is empty , Then perform business assignment ID

Person person = new Person();
Optional.ofNullable(person..getName()).ifPresent(p->p.setId(1))

• If person If the name of is not empty, the name , Otherwise return to 2

 String test = Optional.ofNullable(person.getName()).orElse("2");