백준 11654 아스키 코드 java 더 효율적인 코드 알아보기

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

class Main{		
  public static void main(String[] args) throws IOException{
     BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
     char input = br.readLine().charAt(0);
     System.out.println(input-' '+32);
  }
}

import java.io.*;

class Main{		
  public static void main(String[] args) throws IOException{
     BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
     int input = br.readLine().charAt(0);
     System.out.println(input);

     br.close();
  }
}