Maven:
<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib-jdk8</artifactId>
<version>1.6.0</version>
</dependency>
</dependencies>
Gradle:
groovy
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.0"
}
public class Student {
private String name;
private int score;
public Student(String name, int score) {
this.name = name;
this.score = score;
}
public String getName() {
return name;
}
public int getScore() {
return score;
}
}
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
public class GradeCalculator {
private List<Student> students;
public GradeCalculator() {
students = new ArrayList<>();
}
public void addStudent(Student student) {
students.add(student);
}
public double calculateAverageScore() {
return students.stream()
.mapToInt(Student::getScore)
.average()
.orElse(0);
}
public int getHighestScore() {
return students.stream()
.mapToInt(Student::getScore)
.max()
.orElse(0);
}
public int getLowestScore() {
return students.stream()
.mapToInt(Student::getScore)
.min()
.orElse(0);
}
public List<Student> getStudentsAboveScore(int score) {
return students.stream()
.filter(student -> student.getScore() > score)
.collect(Collectors.toList());
}
}
public class Main {
public static void main(String[] args) {
GradeCalculator calculator = new GradeCalculator();
double averageScore = calculator.calculateAverageScore();
int highestScore = calculator.getHighestScore();
int lowestScore = calculator.getLowestScore();
List<Student> above90Students = calculator.getStudentsAboveScore(90);
}
}
