计算器小程序（applet）

2024-05-31 23:38

文章标签 程序计算器 applet

本文主要是介绍计算器小程序（applet），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

最近感觉好多初学者都在困惑小程序这一块，具体怎么做开端不是很快。因此在此献丑写了一个简单的计算器，大概的解说一下基本写法。具体就是一些空间的使用和响应。代码如下；

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ContainerListener;
import java.io.File;
import java.net.URL;
//import java.io.file;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JTree;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreePath;
import javax.swing.tree.TreeSelectionModel;

public class Calculate1 extends Applet {
JButton bt1 = new JButton("1");
JButton bt2 = new JButton("2");
JButton bt3 = new JButton("3");
JButton bt4 = new JButton("4");
JButton bt5 = new JButton("5");
JButton bt6 = new JButton("6");