comboboxmodel

populate multiple combobox with same model but select diff

由 和自甴很熟 提交于 2019-12-30 11:53:13
问题 Having problems with the ComboBox , I have populated multiple ComboBox es with the same model, but when I run my program and select a value from one ComboBox it selects the same value for the rest. ComboHBoy.setModel(defaultComboBoxModel); ComboHGirl.setModel(defaultComboBoxModel); ComboDHBoy.setModel(defaultComboBoxModel); ComboDHGirl.setModel(defaultComboBoxModel); 回答1: That's because they all are referenced to the same model , any change of the model will affect the all the other combos.

Java Swing Combobox removeAllItems calling ItemStateChanged also?

由 血红的双手。 提交于 2019-12-30 11:05:25
问题 My code is quite simple actually. I saw a simple and similar code was from this article. At first, I have 1 combobox . I have a listener on it called itemStateChanged() . My purpose to add into this listener is that; " to execute some code when user click (select) an item from its dropbox ". Cmb_ItemCategory = new javax.swing.JComboBox(); Cmb_ItemCategory.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Loading..." })); Cmb_ItemCategory.addItemListener(new java.awt.event

How to update JComboBox instances in Swing?

由 ≯℡__Kan透↙ 提交于 2019-12-19 04:11:29
问题 I've 3 comboboxes, upon selecting first combobox, the rest should be updated but my code doesn't seems to be working. Please help in this guys. Here is my code(since my code very long so I'll write error part only). // example code public class GuiComponents { JComboBox<String> comboBox1, comboBox2, comboBox3; public GuiComponents() { ......... ......... String[] element1 = {"item1", "item2", "item3"}; String[] element2 = {"item1", "item2", item3}; String[] element3 = {"item1", "item2",

How to insert items to a jcombobox at runtime and save it

由 做~自己de王妃 提交于 2019-12-12 15:19:53
问题 I need to save the values in my jcombobox at the runtime. What I am trying to do is after clicking on a button, I am setting it to editable = true. Then type the value in the combobox, but it doesn't save. private void btadbknameActionPerformed(java.awt.event.ActionEvent evt) { if(evt.getSource()== btadbkname){ cb_bkname.setEditable(true); cb_bkname.getText(); cb_bkname.addItem(evt); }else{ cb_bkname.setEditable(false); } } I have already added some elements in it on the designing level, but

Get Id and data from database and add to JCombobox

由 ￡可爱￡侵袭症＋ 提交于 2019-12-11 22:58:09
问题 I want to get name and id from database and add it to JCombobox . For this i used public void add_Category(JComboBox cmb) { try { String query = "SELECT * FROM categories"; ResultSet rs = stmt.executeQuery(query); while (rs.next()) { String Txtcmb = rs.getString(2).trim(); int idCmb = rs.getInt("id"); Item comboItem = new Item(idCmb, Txtcmb); cmb.addItem(comboitem); //This line add only 1 object in combocox but i have 5 in my database } } catch(Exception e) { } } Item.java public class Item {

SwingWorker updating multiple comboboxes in multilpe panels

由 会有一股神秘感。 提交于 2019-12-08 02:13:53
问题 I have a little gui program that on startup reads data from an Excel file and some of these data need to go to the relevant comboboxes. I know how to do this by using a separate SwingWorker for each combobox: public class ExcelReader extends SwingWorker<DefaultComboBoxModel, String> { private final DefaultComboBoxModel model; // Constructor called from a panel that has a combobox public ExcelReader(DefaultComboBoxModel model) { this.model = model; } @Override protected DefaultComboBoxModel

SwingWorker updating multiple comboboxes in multilpe panels

由 淺唱寂寞╮ 提交于 2019-12-06 05:29:52
I have a little gui program that on startup reads data from an Excel file and some of these data need to go to the relevant comboboxes. I know how to do this by using a separate SwingWorker for each combobox: public class ExcelReader extends SwingWorker<DefaultComboBoxModel, String> { private final DefaultComboBoxModel model; // Constructor called from a panel that has a combobox public ExcelReader(DefaultComboBoxModel model) { this.model = model; } @Override protected DefaultComboBoxModel doInBackground() throws Exception { ///// code to read data from Excel file ///// publish(someString)

Share data source for two comboboxes

由 自闭症网瘾萝莉.ら 提交于 2019-12-02 10:57:42
问题 I have multiple comboboxes in my GUI which all need to have the data. This data will change at random so a quick way to keep all values synced is needed. I encountered DefaultComboBoxModel which actually fits quite perfect. Only thing is, that I need the comboboxes to be independent of each other - meaning: if I select a value on one, all others shouldn't change. I've done a bit of research and read the standard java tutorials but none tell me really how to achieve this with the

Share data source for two comboboxes

由 老子叫甜甜 提交于 2019-12-02 03:24:00
I have multiple comboboxes in my GUI which all need to have the data. This data will change at random so a quick way to keep all values synced is needed. I encountered DefaultComboBoxModel which actually fits quite perfect. Only thing is, that I need the comboboxes to be independent of each other - meaning: if I select a value on one, all others shouldn't change. I've done a bit of research and read the standard java tutorials but none tell me really how to achieve this with the DefaultComboBoxModel. This example here exactly illustrates what I need: Sharing the Data Model between two

Java Swing Combobox removeAllItems calling ItemStateChanged also?

由 霸气de小男生 提交于 2019-12-01 10:48:24
My code is quite simple actually. I saw a simple and similar code was from this article . At first, I have 1 combobox . I have a listener on it called itemStateChanged() . My purpose to add into this listener is that; " to execute some code when user click (select) an item from its dropbox ". Cmb_ItemCategory = new javax.swing.JComboBox(); Cmb_ItemCategory.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Loading..." })); Cmb_ItemCategory.addItemListener(new java.awt.event.ItemListener() { public void itemStateChanged(java.awt.event.ItemEvent evt) { Cmb_ItemCategoryItemStateChanged
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