Java switch-case

switch- case문

조건이 정수, 문자열 값으로 그 값에 따라 수행 결과가 달라지는 경우

if-else if- else와 같은 의미로 수행

	if(rank == 1){
				medalColor ='G';
		else if(rank ==2 ){
				medalColor ='S';
		}
		else if(rank == 3) {
				medalCollor = 'B';
		}
		else {
				medalColor = 'A;'
	
		switch(rank) {
				  case1:medalColor = 'G';
				  		break;
				  case2:medalColor = 'S';
				  		break;
				  case3:medalColor = 'B';
				  		break;
				  default:medalColor ='A';
		}
      
package ifexample;

import java.util.Scanner;

public class SwitchCaseEx {
	
	public static void main(String[] args) {
		
	Scanner scanner = new Scanner(System.in);
	int rank = scanner.nextInt();
	char medalColor ='A';
	
	switch(rank) {
		case 1: medalColor ='G';
			System.out.println("금메달");
			break;
		case 2: medalColor ='S';
			System.out.println("은메달");
			break;
		case 3: medalColor ='B';
			System.out.println("동메달");
			break;
		default: medalColor ='A';		
	}
	
	System.out.println(rank+ "등은"+medalColor+"메달 입니다"	);
}

package ifexample;

import java.util.Scanner;

public class SwitchCaseEX2 {

	public static void main(String[] args) {
	
		Scanner scanner = new Scanner(System.in);//표준 입력용
		int month = scanner.nextInt();
		int day;
			
		switch(month) {
			case 1:	case 3: case 5: case 7: case 8: case 10: case 12:	
				day = 31;
				break;
			case 2:	
				day = 28;
				break;
			case 4:	case 6:	case 11:	
				day = 31;
				break;
				
			default:
				System.out.println("Error");
				day= 0;
		}
		
		System.out.println(month+"월은"+day+"일입니다.");
	}

}