0401 Report Source

//아래 Source에서 '1.입력'을 통해 들어오는 것들을 '2.출력'에서 모두 다 출력하도록 한다.

/이를 위해서는 Collection을 이용하는 것을 기본으로 한다.

import java.io.*;

public class PersonInfoInput2{

    public static void main(String[] args){

        String name = null;

        int age = 0;

        String address = null;

        BufferedReader br = null;

 

        try{

            br = new BufferedReader(new InputStreamReader(System.in));

            while(true){

                System.out.println();

                System.out.print("1 : 입력 2 : 출력 3 : 종료 ");

                String numStr = br.readLine().trim();

                if(numStr.equals("1")){

                    System.out.print("이름을 입력하세요 : ");

                    name = br.readLine().trim();

                    if(name.length()==0){

                    //if(name.equals("")){    }

                        System.out.println("이름은 한글자 이상 입력하세요");

                        continue;

                    }

                    System.out.print("나이를 입력하세요 : ");

                    try{

                        age = Integer.parseInt(br.readLine().trim());

                    }catch(NumberFormatException ne){

                        System.out.println("나이는 숫자를 넣으세요");

                        continue;

                    }                    

                    System.out.print("주소를 입력하세요 : ");

                    address = br.readLine().trim();

                    if(address.length()==0){

                        System.out.println("주소는 한글자 이상 입력하세요");

                        continue;

                    }                    

                }else if(numStr.equals("2")){

                    System.out.println("이름 : "+name+", 나이 : "+age+", 주소 : "+address);

                }else if(numStr.equals("3")){

                    //1. System.exit(0);

                    //2. break;

                    //3. return;

                    return;

                }else{

                    System.err.println("잘못된 값입니다. 1, 2, 3 중 하나를 선택하세요");

                    continue;

                }

            }

 

        }catch(IOException ioe){

            System.out.println(ioe);

        }finally{

            if(br!=null){

                try{br.close();}catch(IOException ioe){}

            }

        }

    }

}