StudentSystem

package StudentSystem_03;

import java.util.HashMap;
import java.util.Map;

public class StudentSystem {
    private Map<String, Student> studentsByNames;

    public StudentSystem() {
        this.studentsByNames = new HashMap<>();
    }

    public void createStudent(String[] input) {
        String name = input[1];
        int age = Integer.parseInt(input[2]);
        double grade = Double.parseDouble(input[3]);

        Student student = new Student(name, age, grade);
        studentsByNames.putIfAbsent(name, student);

    }

    public void showStudent(String[] input) {
        String name = input[1];
        if (studentsByNames.containsKey(name)) {
            Student student = studentsByNames.get(name);
            System.out.println(student.toString());
        }
    }
}