자바 OOP개념으로 작성한 Has-a 성적처리프로그램

메인클래스 ScoreMng.java

package king;

import java.util.Scanner;

public class ScoreMng {

private StudentScore[] ss;

public ScoreMng(int num) {

// TODO Auto-generated constructor stub

ss = new StudentScore[num];

for (int i = 0; i < num; i++) {

ss[i] = new StudentScore();

}

}

public void input() {

Scanner sc = new Scanner(System.in);

String name;

int kor, eng, math;

for (int i = 0; i < ss.length; i++) {

System.out.println("이름입력");

name = sc.next();

ss[i].setName(name);

System.out.println("국어점수");

kor = sc.nextInt();

ss[i].setKor(kor);

System.out.println("영어점수");

eng = sc.nextInt();

ss[i].setEng(eng);

System.out.println("수학점수");

math = sc.nextInt();

ss[i].setMath(math);

}

}

public void operator() {

int sum = 0;

double avg;

for (int i = 0; i < ss.length; i++) {

sum += (ss[i].getKor() + ss[i].getMath() + ss[i].getEng());

ss[i].setSum(sum);

avg = sum / 3.f;

ss[i].setAvg(avg);

}

}

public void disp() {

for (int i = 0; i < ss.length; i++) {

System.out.println("\t" + (i + 1) + "번째 학생");

System.out.println("총점 " + ss[i].getSum() + " 평점 " + ss[i].getAvg());

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner sc = new Scanner(System.in);

System.out.println("학생수 입력");

int num = sc.nextInt();

ScoreMng sm = new ScoreMng(num);

sm.input();

sm.operator();

sm.disp();

}

}

서브클래스 총.평점계산 StudentScore.java 

package king;

import java.util.Scanner;

public class StudentScore {

private Name name;

private Subject kor;

private Subject eng;

private Subject math;

private int sum;

private double avg;

public StudentScore() {

name = new Name();

kor = new Subject();

eng = new Subject();

math = new Subject();

}

public void setSum(int sum) {

this.sum = sum;

}

public int getSum() {

return sum;

}

public void setAvg(double avg) {

this.avg = avg;

}

public double getAvg() {

return avg;

}

// 아래부터는 이름과 과목들

public void setName(String name) {

this.name.setName(name);

}

public String getName() {

return name.getName();

}

public void setKor(int score) {

kor.setScore(score);

}

public void setEng(int score) {

eng.setScore(score);

}

public void setMath(int score) {

math.setScore(score);

}

public int getKor() {

return kor.getScore();

}

public int getEng() {

return eng.getScore();

}

public int getMath() {

return math.getScore();

}

}

서브클래스 학생이름만 처리 Name.java

package king;

// 이름처리클래스

class Name {

private String name;

public void setName(String name) {

this.name = name;

}

public String getName() {

return name;

}

}

서브클래스 과목의 점수 처리  Subject.java

package king;

//과목처리클래스

class Subject {

private int score;

public void setScore(int score) {

this.score = score;

}

public int getScore() {

return score;

}

}