import?java.awt.*;
import?java.awt.event.*;
import?javax.swing.*;

public?class?calculator?extends?frame?implements?ActionListener?WindowListener
{
????private?Container?container;
????private?GridBagLayout?layout;
????private?GridBagConstraints?constraints;
????private?JTextField?displayField;?????????//計算結(jié)果顯示區(qū)
????private?String?lastCommand;???????????//保存+-*/=命令0
????private?double?result;???????????????//保存計算結(jié)果
????private?boolean?start;???????????//判斷是否為數(shù)字的開始
????private?JMenuBar?menubar;
????private?JMenuItem?m_exit;
????private?JMenuItem?m2_ejz;
????private?JMenuItem?m2_bjz;
????private?Dialog?dialog;
????private?Label?label_dialog;
????private?JButton?button_sqrt;
????private?JButton?button_plusminus;
????private?JButton?button_CE;
????private?JButton?b

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-08-16?01:24??.idea\
?????文件?????????630??2018-08-16?01:21??.idea\compiler.xml
?????目錄???????????0??2018-08-16?01:25??.idea\inspectionProfiles\
?????文件?????????439??2018-08-16?01:21??.idea\misc.xml
?????文件?????????258??2018-08-16?01:19??.idea\modules.xml
?????文件????????8792??2018-08-16?01:21??.idea\uiDesigner.xml
?????文件???????19804??2018-08-16?01:24??.idea\workspace.xml
?????文件?????????422??2018-08-16?01:19??pom.xml
?????目錄???????????0??2018-08-16?01:19??src\
?????目錄???????????0??2018-08-16?01:19??src\main\
?????目錄???????????0??2018-08-16?01:22??src\main\java\
?????文件???????13502??2018-08-16?01:22??src\main\java\calculator.java
?????目錄???????????0??2018-08-16?01:25??src\main\resources\
?????目錄???????????0??2018-08-16?01:19??src\test\
?????目錄???????????0??2018-08-16?01:25??src\test\java\
?????文件?????????830??2018-08-16?01:21??swingdemo.iml
?????目錄???????????0??2018-08-16?01:22??target\
?????目錄???????????0??2018-08-16?01:22??target\classes\
?????文件????????1002??2018-08-16?01:22??target\classes\WinClose.class
?????文件????????8534??2018-08-16?01:22??target\classes\calculator.class
?????目錄???????????0??2018-08-16?01:22??target\generated-sources\
?????目錄???????????0??2018-08-16?01:25??target\generated-sources\annotations\