7. oop2 - (7) StudentDemo (학생 정보 관리 프로그램)

package oop2;
 
public class Student {
    String name;
    int ban;
    int no;
    int kor;
    int eng;
    int math;
    
    int getTotalScore() {
        return kor + eng + math;
    }
    
    int getAverage() {
        int totalScore = getTotalScore();
        return totalScore/3;
    }
    
    void displayStudentInfo() {
        System.out.println("ㅡㅡㅡㅡㅡ 학생 정보ㅡㅡㅡㅡㅡ");
        System.out.println("학생이름 : " + name);
        System.out.println("반 : " + ban);
        System.out.println("번호 : " + no);
        System.out.println("국어점수 : " + kor);
        System.out.println("영어점수 : " + eng);
        System.out.println("수학점수 : " + math);
        System.out.println("총점: " + getTotalScore());
        System.out.println("평균 : " + getAverage());
        System.out.println("ㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡㅡ");
        
    }
    
    void displayStudentsInfoRow() {
        System.out.print(name + "\t");
        System.out.print(ban + "\t");
        System.out.print(no + "\t");
        System.out.print(kor + "\t");
        System.out.print(eng + "\t");
        System.out.print(math + "\t");
        System.out.print(getTotalScore() + "\t");
        System.out.println(getAverage());
        
    }
    
}

package oop2;
 
import java.util.Scanner;
 
public class StudentDemo {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        Student[] students = new Student[100];
        int savePosition = 0;
 
        while (true) {
            System.out.println();
            System.out.println("[학생 정보 관리 프로그램]");
            System.out.println("======================================");
            System.out.println("1.조회    2.검색    3.입력    0.종료");
            System.out.println("======================================");
            
            System.out.print("메뉴를 선택하세요 : ");
            int menuNo = sc.nextInt();
 
            if (menuNo == 1) {
                System.out.println("[학생정보 조회]");
                System.out.println("이름    반    번호    국어    영어    수학    총점    평균");
                System.out.println("============================================================");
                
                for (int i=0; i<savePosition; i++) {
                    Student student = students[i];
                    student.displayStudentsInfoRow();
                }
                
                System.out.println("============================================================");
                
            } else if (menuNo == 2) {
                System.out.println("[학생정보 검색]");
                System.out.print("검색할 이름을 입력하세요 : ");
                String searchName = sc.next();
                
                boolean isFound = false;
                for (int i=0; i<savePosition; i++) {
                    Student student = students[i];
                    if(searchName.equals(student.name)) {
                        student.displayStudentInfo();
                        isFound = true;
                    }
                }
                
                if (!isFound) {
                    System.out.println("입력한 이름과 일치하는 정보를 찾을 수 없습니다.");
                }
                            
            } else if (menuNo == 3) {
                System.out.println("[학생정보 입력]");
                System.out.print("이름을 입력하세요 : ");
                String name = sc.next();
                System.out.print("반을 입력하세요 : ");
                int ban = sc.nextInt();
                System.out.print("번호를 입력하세요 : ");
                int no = sc.nextInt();
                System.out.print("국어점수를 입력하세요 : ");
                int kor = sc.nextInt();
                System.out.print("영어점수를 입력하세요 : ");
                int eng = sc.nextInt();
                System.out.print("수학점수를 입력하세요 : ");
                int math = sc.nextInt();
                
                Student student = new Student();
                
                student.name = name;
                student.ban = ban;
                student.no = no;
                student.kor = kor;
                student.eng = eng;
                student.math = math;
                
                students[savePosition] = student;
                savePosition++;
                
            } else if (menuNo == 0) {
                System.out.println();
                System.out.println("[프로그램 종료]");
                break;
            }
            
            sc.close();
        }
    }
}