class Calculator { static int result = 0; static int add(int num) { result += num; return result; } } public class Main { public static void main(String[] args) { Calculator calc1 = new Calculator(); // 계산기1 객체 생성 Calculator calc2 = new Calculator(); // 계산기2 객체 생성 System.out.println(calc1.add(3)); System.out.println(calc1.add(4)); System.out.println(calc2.add(3)); System.out.println(calc2.add(7)..
