jcombobox

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 6 years ago . How do I create a combo box action listener? I have the following so far: myCombo = new JComboBox(); myCombo.addActionListener(); I am not sure how to proceed, it seems that it is different from the one used for

问题 Ok, so I've got a table setup in which I've added a JComboBox to a specific cell as they've done in the example here, but for some reason the combo box won't display until that cell has been selected. If I select that cell, the combo box opens it's list for me to select from. Whether I change the selection or not, if I click to another cell in the table, it then displays the text of the item selected from the combo box as if it was a simple string displayed in the table as desired. My

问题 I have a JComboBox already created but I would like to update the information with data from a List Array. I currently have the code: java.util.List<String> listNames = empPort.getEmployeeInfo("username"); int itemSize = listNames.size(); the empPort is directed to a web service operation which returned a set of values in a List Array. When using; for(String s : listNames) { combo.add(s, combo); } This code did not work. Can anyone point me in the right direction here? Thanks. 回答1: combo

问题 I'm trying to make a jComoBox that allows all input except from digits. But when i'm trying it with jComoBox it's not working. I did it successfully with jTextFiled(but the oppsite- no numbers): Code of TimeKeyTyped event for i_borow jTextFiled: private void i_borowTimeKeyTyped(java.awt.event.KeyEvent evt) { char c = evt.getKeyChar(); if(!( Character.isDigit(c) || c == KeyEvent.VK_BACK_SPACE || c == KeyEvent.VK_DELETE)) { evt.consume(); l_msg2.setForeground(Color.red); } else { l_msg2

问题 SEE UPDATE AT THE BOTTOM!! I've tried to figured out how to do this for a couple of days but so far I have had no luck. Basically what I want to do is have a combobox, which when an option is selected loads an applet, and passes a value to the applet. Here is the code for the ComboBox class, which is supposed to open the other class in a new window. The other class is the main class for an applet. They are both in the same project but in different packages. I know that there aren't any errors

问题 Let's say, for example, that I have a JComboBox with the elements {"example 1", "example 2", "example 3"} (please note the spaces between example and the corresponding number). When you try to search "example 2" by typing while the combobox is selected, it closes because the space bar toggles the popup of the component. This could be split up into two questions: I have made a swing event and so far it recognizes the space key and I have disabled the default space bar action of the JComboBox .

问题 I am wondering how would I change the name of the item list in my JComboBox?here's my code I want to change it to Dog, Panda, bee. rather than choosing their path. import java.awt.FlowLayout; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.JFrame; import javax.swing.ImageIcon; import javax.swing.Icon; import javax.swing.JLabel; import javax.swing.JComboBox; public class ComboTest { private JLabel imageLabel; private JComboBox comboImage; private String[

问题 Ok, there is two jcombobox displayed one is a list of cities a flight leaves from and another is a list of cities a flight goes to when a user selects an option from both combo boxes I want it to display you are fly from Paris to Belfast, I have got the following code but i dont know how to add another selection as at the moment it is just saying your a flying from Paris to . if(e.getSource() == ownerList ) { JComboBox cb = (JComboBox)e.getSource(); String ownerName = (String)cb

问题 I've created a database application with the NetBeans GUI-Designer. GUI with Comboboxes (Bound to MySQL databasetables user and team): on Button new -> jDialog - executes a query to store a new user in database: Problem: Combobox is updated at the programstart but not while running the program. Question: Is it possible to update the entries in my combobox directly when a new user or team is saved? And how could I Implement this? Edit: Here is what I do when clicking on the saveButton in the

问题 I want to create JComboBox with checkboxes and multiple selection . i have created a list with check box after rendering the jlist . I dont know how to render it with jcombobox . Or is it possible to make jlist as drop down list like combo box . for jlist rendering i am using the following code DefaultListModel listModel = new DefaultListModel(); ListCheckBox li= new ListCheckBox(listModel); JScrollPane jsp= new JScrollPane(li); add(jsp); listModel.add(0,new JCheckBox("Other Court"));