Java7_2

package pack_Conversion;

public class Ref {
	private int ins;
	private String code;
	public Ref(int ins, String code) { //생성자 기능 필드 초기화
		this.ins = ins;
		this.code = code;
		
		if(code.equals("1")) {
			mtdConvsKtM();
		} else if (code.equals("2")) {
			mtdConvsMtK();
		}
	}
	
	public void mtdConvsKtM() {
		double res = ins * 0.621;
		System.out.printf("%d km = %.2f mile", ins, res );
		}
	public void mtdConvsMtK() {
		double res = ins / 0.621;
		System.out.printf("%d mile = %.2f km", ins, res );
	}
	

}

package pack_Conversion;

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.print("입력 선택(1.킬로미터 2. 마일) : ");
		String code = sc.nextLine();
		String unitTxt = null;
		switch(code){
			case "1":
				unitTxt = "킬로미터 입력(km) : ";
				break;
			case "2":
				unitTxt = "마일 입력(mile) : ";
				break;
				}
		System.out.print(unitTxt);
		int ins = sc.nextInt();
		sc.close();
		
		Ref ref = new Ref(ins, code);
		//ref.mtdConversion();
		

	}

}