JAVA 자바 빵 주문/생산일자/유통기한

import java.util.Arrays;
import java.util.Calendar;

public class Bakery2 {

	static final int SUM = 100;
	static String[] bakery = new String[SUM];

	static final String BREAD_1 = "식빵";
	static final String BREAD_2 = "소보로";
	static final String BREAD_3 = "크림빵";
	static final String BREAD_4 = "팥빵";
	static int cnt_1=0,cnt_2=0,cnt_3=0,cnt_4=0;
	
	public static void main(String[] args) {
		//100개 빵 생산
		makeBakery();
		//종류별 카운트
		countBread();
		//print class
		printList();

	}

	private static void printList() {
		Calendar c1 = Calendar.getInstance();
		Calendar c2 = Calendar.getInstance();
		
		int year = c1.get(Calendar.YEAR);
		int month = c1.get(Calendar.MONTH);
		int day = c1.get(Calendar.DAY_OF_MONTH);
		int hour = c1.get(Calendar.HOUR);
		int min = c1.get(Calendar.MINUTE);
		int sec = c1.get(Calendar.SECOND);
		
		c2.add(Calendar.DAY_OF_MONTH,100);
		int year2 = c2.get(Calendar.YEAR);
		int month2 = c2.get(Calendar.MONTH);
		int day2 = c2.get(Calendar.DAY_OF_MONTH);
		
		System.out.print(Integer.toString(year));
		System.out.print(Integer.toString(month+1));
		System.out.println(Integer.toString(day));
		System.out.print(Integer.toString(hour));
		System.out.print(Integer.toString(min));
		System.out.println(Integer.toString(sec));
		
		System.out.print(Integer.toString(year2));
		System.out.print(Integer.toString(month2+1));
		System.out.println(Integer.toString(day2));
	}

	private static void countBread() {
		
		for(String str: bakery) {
			switch(str) {
			case BREAD_1: ++cnt_1; break;
			case BREAD_2: ++cnt_2; break;
			case BREAD_3: ++cnt_3; break;
			case BREAD_4: ++cnt_4; break;
			}
		}
		
		System.out.println(BREAD_1+"\t"+cnt_1);
		System.out.println(BREAD_2+"\t"+cnt_2);
		System.out.println(BREAD_3+"\t"+cnt_3);
		System.out.println(BREAD_4+"\t"+cnt_4);
		
	}

	private static void makeBakery() {

		int i=0;
		String bread = null;
		
		for(i=0; i<100; i++) {
		switch ((int) (Math.random() * 4)) {
		case 0:
			bread = BREAD_1;
			break;
		case 1:
			bread = BREAD_2;
			break;
		case 2:
			bread = BREAD_3;
			break;
		case 3:
			bread = BREAD_4;
			break;
		default:
			break;
		}
		
		
		bakery[i] = bread;

		System.out.println(i+"\t"+bakery[i]);
		}
		
		Arrays.sort(bakery);
		int cnt = 0;
		for(String str: bakery) {
			
			System.out.println(cnt+"\t"+str);
			cnt++;
		}
		}
	}