package lambda_expression.unit12;

import static java.util.stream.Collectors.toList;

import static java.util.stream.Collectors.toSet;

import java.util.List;

import java.util.Set;

import data.Student;

import data.StudentDataBase;

public class StreamMap {

public static void main(String[] args) {

// map() transform one type into other type

List<String> studentList = StudentDataBase.getAllStudents().stream()

.map(Student::getName)

.map(String::toUpperCase).collect(toList());

System.out.println("List :"+studentList);

Set<String> studentSet = StudentDataBase.getAllStudents().stream()

.map(Student::getName)

.map(String::toUpperCase).collect(toSet());

System.out.println("Set :"+studentSet);

List<Student> allStudents = StudentDataBase.getAllStudents();

List<String> studentList2 = allStudents.stream()

.map(Student::getName)

.map(String::toUpperCase).collect(toList());

System.out.println("List :"+allStudents);

System.out.println("List :"+studentList2);

//Check After

/*

StudentDataBase.getAllStudents().stream()

.map(Student::getGpa)

.map(String::toUpperCase).collect(toList());

*/

}

}