106 lines
2.5 KiB
Java
106 lines
2.5 KiB
Java
package dev;
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import dev.service.StudentManager;
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import dev.thread.StudentLoader;
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import dev.utils.FileManager;
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import java.util.List;
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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) throws Exception {
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Scanner scanner = new Scanner(System.in);
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StudentManager manager = new StudentManager();
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while (true) {
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System.out.println("""
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1.Load students
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2.Search student
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3.Remove student
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4.Print students
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5.Exit
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""");
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int choice = scanner.nextInt();
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switch (choice) {
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case 1 -> {
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List<String> data = FileManager.loadStudents("students.txt");
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// TODO:
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// Split data into 3 parts
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int size = data.size();
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int chunk = (size + 2) / 3;
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List<String> part1 = data.subList(0, Math.min(chunk, size));
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List<String> part2 = data.subList(Math.min(chunk, size), Math.min(2 * chunk, size));
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List<String> part3 = data.subList(Math.min(2 * chunk, size), size);
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// TODO:
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StudentLoader t1 = new StudentLoader(part1);
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StudentLoader t2 = new StudentLoader(part2);
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StudentLoader t3 = new StudentLoader(part3);
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// TODO:
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t1.start();
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t2.start();
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t3.start();
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t1.join();
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t2.join();
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t3.join();
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manager.addStudents(t1.getStudents());
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manager.addStudents(t2.getStudents());
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manager.addStudents(t3.getStudents());
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}
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case 2 -> {
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System.out.print("ID: ");
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int id = scanner.nextInt();
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System.out.println(manager.searchStudent(id));
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}
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case 3 -> {
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System.out.print("ID: ");
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int id = scanner.nextInt();
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boolean removed = manager.removeStudent(id);
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System.out.println(removed);
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}
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case 4 ->
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manager.printStudents();
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case 5 -> {
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return;
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}
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}
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}
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}
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}
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