package?com.mingrisoft.gridlayout;

import?java.awt.BorderLayout;
import?java.awt.EventQueue;
import?java.awt.Font;
import?java.awt.GridLayout;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;

import?javax.swing.JButton;
import?javax.swing.Jframe;
import?javax.swing.JPanel;
import?javax.swing.JTextField;
import?javax.swing.SwingConstants;
import?javax.swing.UIManager;
import?javax.swing.border.EmptyBorder;

public?class?Calculator?extends?Jframe?{
????
????/**
?????*?
?????*/
????private?static?final?long?serialVersionUID?=?-9075562467166618473L;
????private?JPanel?contentPane;
????private?JTextField?display;
????private?ActionListener?insert?=?new?InsertAction（）;
????private?ActionListener?command?=?new?CommandAction（）;
????private?double?result?=?0;
????private?String?lastCommand?=?“=“;
????private?boolean?start?=?true;
????
????/**
?????*?Launch?the?application.
?????*/
????public?static?void?main（String[]?args）?{
????????t

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????232??2010-09-11?17:00??.classpath
?????文件?????????379??2010-09-11?17:00??.project
?????文件?????????801??2013-11-21?08:41??bin\com\mingrisoft\gridlayout\Calculator$1.class
?????文件????????1750??2013-11-21?08:41??bin\com\mingrisoft\gridlayout\Calculator$CommandAction.class
?????文件????????1998??2013-11-21?08:41??bin\com\mingrisoft\gridlayout\Calculator$InsertAction.class
?????文件????????5422??2013-11-21?08:41??bin\com\mingrisoft\gridlayout\Calculator.class
?????文件????????8090??2010-09-11?17:00??src\com\mingrisoft\gridlayout\Calculator.java