Java 用 GUI实现简易计算器(为了方便实现，仅支持两个数间的运算，如果读者想设计一个支持N个数之间的运算，可以考虑中缀转后缀，然后用栈来实现)_计算器gui

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Objects;

public class study_11_23_1
{
   
    public static void main(String[] args) {
   
        Window win = new Window(); //创建窗口
        win.setBounds(300,300,300,500);
    }
}
class Window extends JFrame
{
   
    buttonEvent be ; // action监听器

    JTextArea textArea = new JTextArea(15,25);//文本域
    JButton button0 = new  JButton("0");//各种按钮
    JButton button1 = new  JButton("1");
    JButton button2 = new  JButton("2");
    JButton button3 = new  JButton("3");
    JButton button4 = new  JButton("4");
    JButton button5 = new  JButton("5");
    JButton button6 = new  JButton("6");
    JButton button7 = new  JButton("7");
    JButton button8 = new  JButton("8");
    JButton button9 = new  JButton("9");
    JButton buttona = new JButton("+");
    JButton buttons = new JButton("-");
    JButton buttonm = new JButton("*");
    JButton buttond = 
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