I know this is a simpler question.
But is it possible to convert given list of objects List<Person> and convert it into Vector<PersonName> using Java Streams API
public class Person {
String name;
String lastName;
int age;
float salary;
}
public class PersonName {
String name;
String lastName;
}
You should really make a constructor and/or make PersonName extend Person. But here is a solution that does not use either:
ArrayList<Person> list = ...;
Vector<PersonName> vect = list.stream().map(t -> {
PersonName name = new PersonName();
name.lastName = t.lastName;
name.name = t.name;
return name;
}).collect(Collectors.toCollection(Vector::new));
Create a two argument constructor for the PersonName type and then you can do:
Vector<PersonName> resultSet =
peopleList.stream()
.map(p -> new PersonName(p.getName(), p.getLastName()))
.collect(Collectors.toCollection(Vector::new));
stream().map(Utility::transform)... also since there is just mapping, without any filtering here, it might be good to specify the initial capacity of the Vector
new PersonName(p.getName(), p.getLastName()) into another method. which by all means is not worthwhile to refactor to a method.
new Vector<>(list)Persons andPersonNames.