[Java] get, set 메소드를 활용한 성적평가 예제

get, set 메소드를 활용한 성적평가 예제 입니다.

메인 클래스에서 student 라는 객체를 생성후 student 내부에 인스턴스에 set 메소드를 활용하여 값을 넣은후 get메소드를 사용하여 값을 받아오는 예제입니다.

package edu.ks.exam1;

import java.util.Scanner;

public class J0502_2 {

private int jumsu1;

private int jumsu2;

private int jumsu3;

private int jumsu4;

private int jumsu5;

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

String ans;

String number;

String name;

int total;

Student[] student= new Student[50]; 

int avr=0;

int i =0;

hakjumc hj = new hakjumc();

J0502_2 a = new J0502_2();

do{

System.out.println("성적을 입력할 학생이 있으면 y 없으면 n을 입력하세요.");

ans = scan.next();

if(ans.equals("n")) break;

for(int j=0;j<4;j++)

student[i] = new Student();

System.out.println("학번 : ");

student[i].setBunho(scan.next());

System.out.println("이름 : ");

student[i].setName(scan.next());

System.out.println("출석점수 : ");

student[i].setJumsu1(scan.nextInt());

System.out.println("과제점수 : ");

student[i].setJumsu2(scan.nextInt());

System.out.println("수시시험 : ");

student[i].setJumsu3(scan.nextInt());

System.out.println("중간고사 : ");

student[i].setJumsu4(scan.nextInt());

System.out.println("기말고사 : ");

student[i].setJumsu5(scan.nextInt());

total = student[i].getJumsu1()+student[i].getJumsu2()+student[i].getJumsu3()+student[i].getJumsu4()+student[i].getJumsu5();

student[i].setTotal(total);

System.out.println("평균 : "+student[i].getTotal()/5);

hj.setTotal(student[i].getTotal()/5);

avr+=student[i].getTotal()/5;

student[i].setGrade(hj.hakjum());

System.out.println("학점 : "+student[i].getGrade());//학점계산 클래스로 호출

i++;

}while(i<50);

System.out.println("종료");

System.out.println("****성적 평가표****");

System.out.println("학번  \t이름  \t  평균\t  학점");

for(i=0; student[i] != null;i++){

System.out.print(student[i].getBunho()+"\t"+student[i].getName()+"\t"+student[i].getTotal()/5+"\t"+student[i].getGrade());

System.out.println();

}

System.out.println("평균점수는 "+(double)(avr)+"입니다.");

}

}

class hakjumc{

private int total;

private String grade;

public void setTotal(int total){

this.total = total;

}

public String hakjum(){

switch(total/10){

case 10:

case 9:

grade = "A";

break;

case 8:

grade = "B";

break;

case 7:

grade = "C";

break;

case 6:

grade = "D";

break;

default : grade = "F";

}

return grade;

}

}

------------------main-------------------

get,set 클래스 입니다.

package edu.ks.exam1;

public class Student {

private String bunho;

private String name;

private int jumsu1;

private int jumsu2;

private int jumsu3;

private int jumsu4;

private int jumsu5;

private int total;

private String grade;

public String getBunho() {

return bunho;

}

public void setBunho(String bunho) {

this.bunho = bunho;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getJumsu1() {

return jumsu1;

}

public void setJumsu1(int jumsu1) {

this.jumsu1 = jumsu1;

}

public int getJumsu2() {

return jumsu2;

}

public void setJumsu2(int jumsu2) {

this.jumsu2 = jumsu2;

}

public int getJumsu3() {

return jumsu3;

}

public void setJumsu3(int jumsu3) {

this.jumsu3 = jumsu3;

}

public int getJumsu4() {

return jumsu4;

}

public void setJumsu4(int jumsu4) {

this.jumsu4 = jumsu4;

}

public int getJumsu5() {

return jumsu5;

}

public void setJumsu5(int jumsu5) {

this.jumsu5 = jumsu5;

}

public int getTotal() {

return total;

}

public void setTotal(int total) {

this.total = total;

}

public String getGrade() {

return grade;

}

public void setGrade(String grade) {

this.grade = grade;

}

}

출력결과는 아래와 같습니다.