jlist

("speciality"); Jcb1=new Jcheckbox ("Music"); Jcb2=new jcheckbox ("Sport"); jcb3= New Jcheckbox ("literary"); Jp1.add (JLB1); Jp1.add (JCB1); Jp1.add (JCB2); Jp1.add (JCB3); jp2=new JPanel () jlb2=new JLabel ("gender"); Jrb1=new Jradiobutton ("male"); Jrb2=new Jradiobutton ("female"); bg1=new Buttongroup (); Bg1.add (JRB1); Bg1.add (JRB2);//Add into group so that it can only select one Jp2.add (JLB2); Jp2.add (JRB1); Jp2.add (JRB2);//Do not add the group to Jp3=new JPanel (); jb1=new JButton ("

. filenotfoundexception; import javax. swing. abstractlistmodel; import javax. swing. jbutton; import javax. swing. jframe; import javax. swing. jlist; import javax. swing. jscrollpane; public class jbenchframe extends jframe {borderlayout borderlayout1 = new borderlayout (); jlist list1 = new jlist (); jbutton fillbutton = new jbutton (); public static void main

7. JComboBox drop-down list/** Initialize drop-down list*/public void Addcomb () {string[] area = {"Shanxi province", "Shandong province", "Hebei province", "Shaanxi province"};JComboBox jb=new JComboBox (area);Jb.setsize (70, 20);Jb.setlocation (120, 200);Jb.setopaque (FALSE);C.add (JB);String[] area1 = {"Taiyuan", "Changzhi", "Xinzhou", "Yuci"};JComboBox jb1=new JComboBox (AREA1);Jb1.setsize (70, 20);Jb1.setlocation (200, 200);Jb1.setopaque (FALSE);C.add (JB1);C.setlayout (NULL);}8.

{PrivateStaticvoidCreateandshowgui () {JFrame frame =New JFrame ("HelloWorld"); Frame.setdefaultcloseoperation (Jframe.exit_on_close);//Pane ' s layout Container CP =Frame.getcontentpane (); Cp.setlayout (New GridLayout (0,2));//JButton JButton button =New JButton ("Click Me"); JLabel label =New JLabel ("OK");//JPanel JPanel Panel1 =New JPanel (NewBorderLayout ()); JPanel Panel2 =New JPanel (NewBorderLayout ()); Panel2.setbackground (color.red); Panel1.add (button, borderlayout.center); Cp.add

)) {if (flag = = False) {Jtextarea.settext (Child.getabsolutepath ());}}5. Add File name search function:A new text box is used to enter the file name, compare the resulting file name with the file name listed in FL, and add it to the files dynamic array for display.if (Fl[i].getname (). Contains (FN) !fn.equals ("")) {Files.add (Fl[i]);}6. Add the ability to open a file in the Click Results list:1. Normal JTextArea does not support the ability to click Back to click Options, so take advantage o

Job Requirements: Scan the files in the specified location from the hard disk and then display them to the graphical user interface, add a drop-down menu in the GUI interface, list box, below is my code:Import Java.awt.BorderLayout; Import Java.awt.Color; Import java.awt.Dimension; Import Java.awt.Toolkit; Import java.awt.event.ActionEvent; Import Java.awt.event.ActionListener; Import Java.io.File; Import Java.nio.file.Path; Import java.nio.file.Paths; Import java.util.ArrayList; Import java.uti

Use component JList to complete the display of specified file contents with a list componentImport java.awt.*;Import Java.io.File;Import java.util.ArrayList;Import java.util.List;Import javax.swing.*;public class Liebiao extends JFrame {Private static final String music = "File";Private JFrame frame;Private JList fileList;Public Liebiao () {string[] FileNames = findfiles (music, NULL);Makeframe (FileNames);

); JList string[] lines = {"A", "B", "C"}; JList list = new JList (lines); Cp.add (list); Jcheckbox Cp.add (New Jcheckbox ());Show the Window Frame.pack (); Frame.setvisible (TRUE); public static void Main (string[] args) {Runnable tr = new Runnable () {public void run () { Createandshowgui (); } };

the drop-down list. You can also inherit two important methods of the AbstractListModel class: GetSize (): length of the returned list GetElementAt (int index): returns the value at the specified index.13.7.2 JList component JList class () constructor: public void JList () provides three methods for setting items in the list box: array, Vector, and ListModel mod

Today, I wrote a small program encountered this problem, in the online search for someone else's ideas, sorting out the code can run, feel good! A new application is created directly in JBuilder, as the specific steps do not describe, this code does not run directly without the main function. Below I post the code in FRAME1: Import java.awt.*; Import java.awt.event.*; Import javax.swing.*; Import com.borland.jbcl.layout.*; Import Java.util.Date; public class Frame1 Extends JFrame { JPanel Conte

Import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; /** * * * * * @version 1.0 */ public class Listdemo extends JPanel implements Listselectionlistener { private JList list; private Defaultlistmodel Listmodel; private static final String hirestring = "Add"; private static final String firestring = "delete"; private JButton Firebutton; private JTextField EmployeeName; public Listdemo () { Supe

code as follows: Import java.awt.*; Import javax.swing.*; public class Gridbagdemo extends JFrame { public static void Main (String args[]) { Gridbagdemo demo = new Gridbagdemo (); } Public Gridbagdemo () { Init (); This.setsize (600,600); This.setvisible (TRUE); } public void init () { J1 = new JButton ("open"); J2 = new JButton ("Save"); J3 = new JButton ("Save As"); J4 = new JPanel (); string[] str = {"Java notes", "C # Notes", "HTML5 Notes"};

1. TasksThat is, to pursue benefits, but also to face unpredictable financial investment risks, "can not put eggs in the same basket", it is necessary to make a portfolio investment.The above calculations and comparisons can help customers make investment decisions.Customer: So can you help me to record a different type of investment, and dynamically show the current value of money?1 resultlist.setvisiblerowcount (5); // The default number of bars in JLis