Java------graphical Interface (iii)

Import Java.awt.*;import java.awt.event.*;import Javax.swing.*;import Javax.swing.border.titledborder;public class                                  Userjframe extends JFrame implements ActionListener {private int number=1;             Number Private JTextField text_number, Text_name;       Number, Name text line private Jradiobutton Radiob_male, Radiob_female;                             Sex button private Object cities[][];        Store multi-provincial city private JComboBox combox_province, combox_city;                            Province, City combo box private JButton button_add;                           Add button private JTextArea text_user;        Text Area public Userjframe (object provinces[], Object cities[][])//parameter specify province and city array {super ("Enter user Information");        This.setsize (740, 300);        This.setlocationrelativeto (NULL);        This.setdefaultcloseoperation (Exit_on_close);        JPanel rightpanel=new JPanel (New GridLayout (6,1));//Right panel JPanel leftpanel=new JPanel (New BorderLayout ());//left panel LeftpanEl.setborder (New Titledborder ("person"));        JSplitPane split=new JSplitPane (Jsplitpane.horizontal_split,rightpanel,leftpanel);///Horizontal divider pane, add a panel to the left and right Split.setdividerlocation (140);//Set the position of the horizontal divider split.setenabled (FALSE);//Set separator bar cannot be changed This.getcontentpane (). Add (SPL        it);//The Frame Contents pane Adds a separator pane text_user = new JTextArea ();        Text_user.seteditable (FALSE);        Leftpanel.add (Text_user);                 Leftpanel.add (New JScrollPane (Text_user));//Set text edit field to scroll text_number = new JTextField ("1");                    Numbered text line text_number.seteditable (false);        Non-editable, numbered auto-generated rightpanel.add (Text_number);        Text_name = new JTextField ("name");        Rightpanel.add (Text_name);   JPanel panel_rb=new JPanel (new GridLayout);        Radio button Sub-panel, grid layout, 1 rows 2 columns Rightpanel.add (PANEL_RB);            Buttongroup bgroup = new Buttongroup ();         Button Group Radiob_male = new Jradiobutton ("male", true); Create radio button, default check Bgroup.add (Radiob_male);                         The radio button is added to the button group Panel_rb.add (Radiob_male);        Radio Button added to sub-panel Radiob_female = new Jradiobutton ("female");        Bgroup.add (Radiob_female);        Panel_rb.add (Radiob_female);        this.cities = cities;        Combox_province = new JComboBox (provinces);                 Province combo box combox_province.seteditable (false);        Set the combo box to edit combox_province.addactionlistener (this);        Rightpanel.add (combox_province);            combox_city = new JComboBox (cities[0]);                City combo Box Rightpanel.add (combox_city);        Button_add = new JButton ("Add");        Button_add.addactionlistener (this);        Rightpanel.add (Button_add);    This.setvisible (TRUE);                public void actionperformed (ActionEvent e)//Click event handling method {if (E.getsource () ==combox_province)      When you select a data item in the drop-down list of the combo box {int i=combox_province.getselectedindex (); The Province combo box is currently selected with the ordinal combox_city.RemoveAllItems (); Clears all contents of the Regional combo box for (int j=0; j<this.cities[i].length; j + +) Combox_city.additem (this.cities[i    ][J]); Region combo box Add Data item} if (E.getsource () = = Button_add)//Click the button {String Alin            E=number+ "," +text_name.gettext ();       if (radiob_male.isselected ())//Specify the radio button aline + = "," +radiob_male.gettext ();            Gets the gender string that the radio button represents if (Radiob_female.isselected ()) Aline + = "," +radiob_female.gettext (); Aline + = "," +combox_province.getselecteditem ();            Gets the combo box of the selected item string aline + = "," +combox_city.getselecteditem ();                  Text_user.append (aline+ "\ n");                                 The text area adds a line of string this.number++;            The number is automatically added 1 text_number.settext ("" +this.number);        Text_name.settext ("name"); }} public static void Main (String arg[]) {Object PRovinces[]={"Jiangsu Province", "Zhejiang province"};        Object cities[][]={{"Nanjing", "Suzhou", "Wuxi"}, {"Hangzhou City", "Ningbo", "Wenzhou"}};    New Userjframe (provinces, cities);         }}

Java------graphical Interface (iii)