GUI 실습 - Calculator

/src
ㄴ/controller
    ㄴCal_controller.java
ㄴ/model
    ㄴCal_model.java
ㄴ/view
    ㄴCal_view.java

Model

package model;

public class Cal_model {
    private String op;
    private double firstValue;
    private double secondValue;
    private double result;
    private double text;

    public void calculate(String op, double first, double second) {
            switch(op){
            case "+" :
                setResult(plus(first,second));
                break;
            case "-" :
                    setResult(minus(first,second));
                break;
            case "*" :
                    setResult(multiply(first,second));
                    break;
            case "/" : 
                    setResult(divide(first,second));
                break;
            default:
                    break;
        }
    }


    public double plus(double first,double second) {

        return first+second;
    }
    public double minus(double first,double second) {
        return first-second;
    }
    public double multiply(double first,double second) {
        return first*second;
    }
    public double divide(double first,double second) {
        return first/second;
    }
    public String getOp() {
        return op;
    }
    public void setOp(String op) {
        this.op = op;
    }
    public double getFirstValue() {
        return firstValue;
    }
    public void setFirstValue(double firstValue) {
        this.firstValue = firstValue;
    }
    public double getSecondValue() {
        return secondValue;
    }
    public void setSecondValue(double secondValue) {
        this.secondValue = secondValue;
    }
    public double getResult() {
        return result;
    }
    public void setResult(double result) {
        this.result = result;
    }
    public double getText() {
        return text;
    }
    public void setText(double text) {
        this.text = text;
    }
}

View

package view;

import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;

import model.Cal_model;

public class Cal_view extends JFrame {

    private JPanel panel,bottom,side;

    // 0~9까지 숫자 
    private JButton btnNum[] = new JButton[10];
    // clear, decimal, divide,equals,minus,multiply, plus,ponseg
    private JButton btnOp[] = new JButton[8];
    String operation[] = {"C",".","+","-","*","/","+/-","="};

    //보여지는곳
    private JTextField display = new JTextField();
    //소수점구현 
    private int decimalClick;



    public Cal_view() {

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 340, 440);
        getContentPane().setLayout(null);

        display.setFont(new Font("Apple SD Gothic Neo", 1, 30));
        display.setBounds(6,6,328,58);
        display.setBackground(Color.WHITE);
        getContentPane().add(display);



        panel = new JPanel();
        panel.setBounds(6, 66, 235, 271);
        getContentPane().add(panel);
        panel.setLayout(new GridLayout(4,3));

        bottom = new JPanel();
        bottom.setBounds(6, 338, 328, 74);
        getContentPane().add(bottom);
        bottom.setLayout(new GridLayout(1,2));

        side = new JPanel();
        side.setBounds(240, 66, 94, 271);
        getContentPane().add(side);
        side.setLayout(new GridLayout(4,1));

        for(int i=0;i<10;i++) {
            btnNum[i] = new JButton(""+i);
                btnNum[i].setFont(new Font("Apple SD Gothic Neo", 1, 16));
                if(i!=0)panel.add(btnNum[i]);

        }
        panel.add(btnNum[0]);

        for(int i=0;i<8;i++) {
                btnOp[i] = new JButton(operation[i]);
                btnOp[i].setFont(new Font("Apple SD Gothic Neo", 1, 16));

                if(i<2) {
                    panel.add(btnOp[i]);
                }else if(i<6) {
                    side.add(btnOp[i]);
                }else {
                    bottom.add(btnOp[i]);
                }

        }
    }

    public Cal_view(Cal_model model) {
        this();

        for(int i=0;i<10;i++) {
            numberAction(model, btnNum[i],i);
        }
        btnOp[0].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                display.setText("");
                decimalClick=0;
            }
        });

        btnOp[1].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if(decimalClick==0){
                    display.setText(display.getText()+btnOp[1].getText());
                    decimalClick=1;
                }
            }
        });


        for(int i=2;i<6;i++) {
            opAction(model, btnOp[i],i);
            decimalClick = 0;
        }

        btnOp[6].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                double plusminus = (Double.parseDouble(String.valueOf(display.getText())));
                plusminus = plusminus*(-1);
                display.setText(String.valueOf(plusminus));
            }
        });

        btnOp[7].addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                model.setSecondValue((Double.parseDouble(String.valueOf(display.getText()))));
                model.calculate(model.getOp(), model.getFirstValue(), model.getSecondValue());
                display.setText((String.valueOf(model.getResult())));

            }
        });                
    }

    public void numberAction(Cal_model model, JButton btnNum, int i) {
        btnNum.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                display.setText(display.getText()+btnNum.getText());
            }
        });
    }
    public void opAction(Cal_model model, JButton btnOp, int i) {
        btnOp.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                model.setFirstValue((Double.parseDouble(String.valueOf(display.getText()))));
                model.setOp(operation[i]);
                display.setText("");
            }
        });
    }        
}

Controller

package controller;

import model.Cal_model;
import view.Cal_view;

public class Cal_controller {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Cal_model m = new Cal_model();
        Cal_view  v= new Cal_view(m);
        v.setVisible(true);
    }
}