Simple Programming (27) Create a form drop-down list

Create a form with two drop-down lists, one for the Academy drop-down list, and one for the professional drop-down list,

When the user is asked to select a department, the options in the Professional drop-down list are updated accordingly.

Software Institute: Software development, software testing, network engineering

Foreign Language Institute: English, Japanese, French

School of Management: Business Administration, accounting, marketing

<span style= "FONT-SIZE:24PX;" >import java.awt.container;import java.awt.dimension;import Java.awt.flowlayout;import java.awt.Toolkit;import Java.awt.event.containerevent;import Java.awt.event.itemevent;import Java.awt.event.itemlistener;import  Javax.swing.jcombobox;import Javax.swing.jframe;import Javax.swing.jlabel;public class Zuoye2 extends JFrame{private JComboBox xyjcombobox,zyjcombobox;private String xyname [] ={"Software Academy", "Foreign Language Academy", "School of Management"}; Private String Zyname [] ={{"Software development", "Software Test", "Network Engineering"},{"English", "Japanese", "French"},{"Business Administration", "Accounting", "Marketing"};p ublic Zuoye2 () {Toolkit Toolkit = Toolkit.getdefaulttoolkit ();D imension Dimension = Toolkit.getscreensize (); SetBounds (DIMENSION.WIDTH/4,     DIMENSION.HEIGHT/4,DIMENSION.WIDTH/4, DIMENSION.HEIGHT/4); Setdefaultcloseoperation (JFrame.EXIT_ON_CLOSE); Xyjcombobox=new JComboBox (xyname); Zyjcombobox=new JComboBox (zyname[0]); Container Container = This.getcontentpane (); Container.setlayout (new FlowLayout ()); Container.add (New JLabel ("College:")); Container.Add (Xyjcombobox); Container.add (New JLabel ("Professional:")); Container.add (Zyjcombobox); Xyjcombobox.additemlistener (new ItemListener () {public void itemstatechanged (ItemEvent arg0) {zyjcombobox.removeallitems (); int index= Xyjcombobox.getselectedindex (); for (int i=0;i<zyname[index].length;i++) {Zyjcombobox.additem (ZyName[index][i]) ;}}}); SetVisible (TRUE);} public static void Main (string[] args) {zuoye2 demo = new Zuoye2 ();}} </span>

Simple Programming (27) Create a form drop-down list