Oracle Exam 1Z0-809 Topic 10 Question 9 Discussion

Given:

class Student {

String course, name, city;

public Student (String name, String course, String city) {

this.course = course; this.name = name; this.city = city;

}

public String toString() {

return course + '':'' + name + '':'' + city;

}

public String getCourse() {return course;}

public String getName() {return name;}

public String getCity() {return city;}

and the code fragment:

List stds = Arrays.asList(

new Student (''Jessy'', ''Java ME'', ''Chicago''),

new Student (''Helen'', ''Java EE'', ''Houston''),

new Student (''Mark'', ''Java ME'', ''Chicago''));

stds.stream()

.collect(Collectors.groupingBy(Student::getCourse))

.forEach(src, res) -> System.out.println(scr));

What is the result?