package ch01; import java.io.IOException; public class SysteminTest1 { public static void main(String[] args) { System.out.println("알파벳 하나를 쓰고 [enter]를 누르세요"); int i ; try { i = System.in.read(); //출력 System.out.println(i); System.out.println((char)i);//형변환 } catch (IOException e) { e.printStackTrace(); } } } package ch01; import java.io.IOException; import java.io.InputStream; import java.io.In..