JavaSwing计算器纯界面

package day23.calc;

import javax.swing.*;
import javax.swing.border.LineBorder;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class MyCalc extends JFrame implements ActionListener {

    private JMenuBar menu;
    private JMenu menuView;
    private JMenu menuEdit;
    private JMenu menuHelp;
    private JLabel lblInput;
    private JLabel lblShow;
    private JButton[] btnOperater = new JButton[28];

    public MyCalc() {
        initMenu();
        initContent();
        this.setTitle("计算器");
        this.setResizable(false);
        this.setLocationRelativeTo(null);
        this.setSize(228, 324);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    private void initMenu() {
        menu = new JMenuBar();
        menuView = new JMenu("查看(V)");
        menuView.setMnemonic('V');//设置热键
        menuEdit = new JMenu("编辑(E)");
        menuEdit.setMnemonic('E');
        menuHelp = new JMenu("帮助(H)");
        menuHelp.setMnemonic('H');
        menu.add(menuView);
        menu.add(menuEdit);
        menu.add(menuHelp);
        this.setJMenuBar(menu);
    }

    private void initContent() {
        //整个窗口区域
        JPanel jp = new JPanel();
        jp.setLayout(null);
        //显示框区域
        JPanel jpShow = new JPanel();
        //设置显示框上方小字体
        Font myFont = new Font("arial", Font.BOLD, 22);
        lblInput = new JLabel();
        lblInput.setText("0");
        //字体右对齐
        lblInput.setHorizontalAlignment(JLabel.RIGHT);
        lblInput.setFont(myFont);
        //字体
        myFont = new Font("arial", Font.BOLD, 10);
        lblShow = new JLabel();
        lblShow.setText("sqrt");
        //设置字体右对齐
        lblShow.setHorizontalAlignment(JLabel.RIGHT);
        lblShow.setFont(myFont);
        //设置位置
        jpShow.setBounds(14, 15, 190, 50);
        jpShow.setLayout(new BorderLayout());
        jpShow.add(lblShow, BorderLayout.NORTH);
        jpShow.add(lblInput, BorderLayout.CENTER);
        //设置边框
        jpShow.setBorder(BorderFactory.createLineBorder(new Color(142, 156, 173)));
        jp.add(jpShow);
        jpShow = new JPanel();
        jpShow.setBounds(14, 72, 196, 194);
        jpShow.setLayout(null);
        Font font_but = new Font("arial", Font.BOLD, 10);//按钮字体
        for (int i = 0; i < btnOperater.length; i++) {
            btnOperater[i] = new JButton(Operator.labs[i]);
            btnOperater[i].setForeground(new Color(30, 57, 91));
            btnOperater[i].setActionCommand(Operator.values()[i].toString());
            btnOperater[i].setFont(font_but);//设置按钮字体
            btnOperater[i].setBounds(i % 5 * (33 + 6), i / 5 * (24 + 6), 33, 24);//33宽,24高,间距6，5个换一行
            btnOperater[i].setBorder(new LineBorder(new Color(135, 151, 170), 1));//按钮边框
            btnOperater[i].addActionListener(this);//添加
            jpShow.add(btnOperater[i]);

        }
        btnOperater[24].setBounds(24 % 5 * (33 + 6), 24 / 5 * (24 + 6), 33, 24 * 2 + 6);//调整等号按钮位置
        btnOperater[25].setBounds(25 % 5 * (33 + 6), 25 / 5 * (24 + 6), 33 * 2 + 6, 24);//调整0按钮的位置
        btnOperater[26].setBounds(27 % 5 * (33 + 6), 26 / 5 * (24 + 6), 33, 24);//调整.按钮的位置
        btnOperater[27].setBounds(28 % 5 * (33 + 6), 27 / 5 * (24 + 6), 33, 24);//调整较好按钮的位置
        jp.add(jpShow);
        this.setLayout(new BorderLayout());
        this.add(jp, BorderLayout.CENTER);
        this.setVisible(true);
    }

    public static void main(String[] args) {
        new MyCalc();
    }

    @Override

    public void actionPerformed(ActionEvent e) {
        //实现逻辑操作
        JButton btn = (JButton) e.getSource();
        String commond = btn.getActionCommand();
    }

}

//枚举类
enum Operator {

    mC, mR, mS, mAdd, mSubtract,//mc,mr,ms,m+,m-

    clBack, clError, clClear, operNegation, operSqrt,//<-,ce,c,-/+,开平方

    n7, n8, n9, operDivide, operPer,// /,%,

    n4, n5, n6, operMultiply, operReciproc,//*,倒数

    n1, n2, n3, operSubtract, operEqu,//-,=

    n0, operDot, operAdd;//+

    public static final String[] labs = new String[]{

            "MC", "MR", "MS", "M+", "M-",

            "←", "CE", "C", "±", "√",

            "7", "8", "9", "/", "%",

            "4", "5", "6", "*", "1/x",

            "1", "2", "3", "-", "=",

            "0", ".", "+"

    };

}