mina's tory

pulic class Main { public static void main(String[] args) { Student chaemina = new Student(21, "chaemina" , 2); System.out.println(chaemina.age+"" +chaemina.name+" " + chaemina.grade); } } class Student { int age; String name; int grade; Student(int age, String name, int grade) { this.age = age; this.name = name; this.grade = grade; } }

notion ->> tistory int cnt = (int)str.charAt(i)-97; //소문자만 string으로 저장된 문자열 중에서 한 글자만 선택해서 char 타입으로 변환 String str = new String(); char c = ' '; str = "안녕하세요"; c = str.charAt(0); System.out.println(c); //'안' 출력