import java.io.*;

public class Ex02 {

public static void main(String[] args) throws IOException {

File f = new File("ccc.txt");

// 입력 클래스
FileReader fr = new FileReader(f);
BufferedReader br = new BufferedReader(fr);

// 출력 클래스
OutputStreamWriter osw = new OutputStreamWriter(System.out);
BufferedWriter bw = new BufferedWriter(osw);
PrintWriter pw = new PrintWriter(bw);

String str = "";

// 더 이상 문자열이 존재 하지 않을 때까지 반복
while((str = br.readLine()) != null) {
  pw.println(str);
  pw.flush();
}

pw.close();
br.close();
}

}

import java.io.*;
import java.util.*;

public class Ex03 {

public static void main(String[] args) throws IOException {

Scanner in = new Scanner(System.in);

System.out.print("문자열 : ");
String str = in.next();

System.out.print("Integer : ");
int num = in.nextInt();

System.out.print("Double : ");
double dnum = in.nextDouble();

System.out.println("문자열 : " + str);
System.out.println("Integer : " + num);
System.out.println("Double : " + dnum);
}

}