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1. 간단한 계산기 구현1) MyCalculator - 위치 : com.pcy.dayonetest (main)package com.pcy.dayonetest;public class MyCalculator { private Double result; // 생성자 public MyCalculator() { this.result = 0.0; } // 생성자 public MyCalculator(Double initResult) { this.result = initResult; } // 더하기 public MyCalculator add(Double number) { this.result += number; retur..