import?java.awt.BorderLayout;
import?java.awt.Checkbox;
import?java.awt.CheckboxGroup;
import?java.awt.Color;
import?java.awt.Container;
import?java.awt.FlowLayout;
import?java.awt.Font;
import?java.awt.GridLayout;
import?java.awt.Toolkit;
import?java.awt.datatransfer.Clipboard;
import?java.awt.datatransfer.DataFlavor;
import?java.awt.datatransfer.StringSelection;
import?java.awt.datatransfer.Transferable;
import?java.awt.datatransfer.UnsupportedFlavorException;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.awt.event.InputEvent;
import?java.awt.event.KeyEvent;
import?java.io.File;
import?java.io.FileReader;
import?java.io.FileWriter;
import?java.io.IOException;
import?java.io.RandomAccessFile;
import?java.text.SimpleDateFormat;
import?java.util.Date;

import?javax.swing.Box;
import?javax.swing.JButton;
import?javax.swing.JDialog;
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.JPasswordField;
import?javax.swing.JScrollPane;
import?javax.swing.JTextArea;
import?javax.swing.JTextField;
import?javax.swing.KeyStroke;
import?javax.swing.Timer;

/**********************Java計(jì)算器?主類*********************/
public?class?Calculator?implements?ActionListener?{
????Jframe?f;
????JDialog?login?addUser;
????JMenu?mView;
????JMenu?mEdit;
????JMenu?mHelp;
????JMenuItem?mRecord;
????JMenuItem?mCopy;
????JMenuItem?mPaste;
????JMenuItem?about;
????JTextField?tResult?tf;
????JButton?bNumber;
????JButton?bOperator;
????JButton?bOther;
????JButton?bM;
????JButton?Pi;
????JButton?sin?cos?tan;
????JButton?log;
????char?operate?=?‘?‘;
????//操作數(shù)
????StringBuffer?num1?=?new?StringBuffer（“0“）?num2?=?new?StringBuffer（“0“）;
????boolean?isExist?=?false?isClear?=?false;
????//M系列
????StringBuffer?memory?=?new?StringBuffer（20）;
????//系統(tǒng)剪切板
????Clipboard?clip?=?Toolkit.getDefaultToolkit（）.getSystemClipboard（）;
????
????//Java計(jì)算器?構(gòu)造器
????public?Calculator（）?{
????????f?=?new?Jframe（“計(jì)算器“）;
????????Container?contentPane?=?f.getContentPane（）;
????????
????????final?SimpleDateFormat?sdf?=?new?SimpleDateFormat（“當(dāng)前時(shí)間?HH:mm:ss“）;
????????Timer?time?=?new?Timer（1000?new?ActionListener（）?{
			public?void?actionPerformed（ActionEvent?e）?{
				f.settitle（“計(jì)算器????“?+?sdf.format（new?Date（System.currentTimeMillis（））））;
			}
		}）;
????????time.start（）;
????????/**************************Java計(jì)算器?菜單的創(chuàng)建*****************************/
????????JMenuBar?mBar?=?new?JMenuBar（）;
????????mBar.setOpaque（true）;
????????
????????mView?=?new?JMenu（“查看（V）“）;
????????mView.setMnemonic（KeyEvent.VK_V）;
????????mRecord?=?new?JMenuItem（“歷史紀(jì)錄（H）“）;
????????mRecord.setMnemonic（KeyEvent.VK_H）;
????????mRecord.addActionListener（this）;
????????mView.add（mRecord）;
????????
????????mEdit?=?new?JMenu（“編輯（E）“）;
????????mEdit

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1388??2011-07-12?09:53??Calculator$2.class

?????文件????????637??2011-07-12?09:53??Calculator$3.class

?????文件???????1805??2011-07-12?09:53??Calculator$4.class

?????文件????????667??2011-07-12?09:53??Calculator$5.class

?????文件??????16091??2011-07-12?09:53??Calculator.class

?????文件??????25681??2011-07-12?09:53??Calculator.java

?????文件????????394??2011-07-12?09:53??data.txt

?????文件?????256000??2012-07-28?18:52??Java的計(jì)算器.doc

?????文件?????????17??2011-07-12?09:53??user.dat

?????文件???????1063??2011-07-12?09:53??Calculator$1.class

-----------?---------??----------?-----??----

???????????????303743????????????????????10