java计算器--计算器窗口

最新推荐文章于 2023-02-11 16:42:04 发布

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最新推荐文章于 2023-02-11 16:42:04 发布 · 2k 阅读

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#用窗口功能实现计算器

本文将介绍如何使用Java编程语言创建一个具有窗口功能的计算器应用，详细讲解从界面设计到功能实现的步骤，涵盖事件监听、计算逻辑等关键知识点。

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

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

public class Two extends JFrame implements ActionListener{
   
   
	//计算器上的键
	private final String[] KEYS = {
   
   "7","8","9","/","sqrt","4","5","6","*","%","1","2","3",
			"-","1/x","0","+/-",".","+","="};
	
	  /** 计算器上的功能键的显示名字 */  
    private final String[] COMMAND = {
   
    "Backspace", "CE", "C" };  
    /** 计算器左边的M的显示名字 */  
    private final String[] M = {
   
    " ", "MC"