jcombobox | 易学教程

java comboBox autocomplete

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问题 Can someone tell me how to change this code to have autoselection and I could be able to write not existing items, because it doesnt let me to write new items. public class ComboBoxFill extends PlainDocument { ComboBoxModel model; JComboBox comboBox=new JComboBox(); JTextComponent editor; public ComboBoxFill(ComboBoxModel model, JComboBox comboBox,JTextComponent editor) { this.model = model; this.comboBox=comboBox; this.editor=editor; } public void insertString (int offs,String str

JComboBox to list age

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问题 Purpose: JComboBox to list down ages that a user can select I realize that I need an array of integers. What part of the Math functions in Java will allow me to easily do that? The list of numbers will be from 1-100 in sequential order. 回答1: I don't quite understand why you need the Math functions. This would work: List<Integer> age = new ArrayList<Integer>(); for (int i = 1; i <= 100; ++i) { age.add(i); } JComboBox ageComboBox = new JComboBox(age.toArray()); 回答2: You don't need any math

Why JComboBox ignore PrototypeDisplayValue

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问题 In connections with these two post @iMohammad, Increasing/Decreasing Font Size inside textArea using JButton and Changing Font Style when Clicking on a JButton Java ..., I'm facing with really funny issue that came from JComboBox by passing setPrototypeDisplayValue as an argument for JComboBox's size on the screen please how can I resize JComboBox dynamically depends of Font , same as works correctly for another JComponents that I tried in my sscce import java.awt.*; import java.awt.event.*;

JComboBox returning values

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问题 What method is used to return the selection chosen by the user? JPanel ageSelection = new JPanel(); JLabel age = new JLabel("Age:"); ArrayList<Integer> ageList = new ArrayList<Integer>(); for (int i = 1; i <= 100; ++i) { ageList.add(i); } DefaultComboBoxModel<Integer> modelAge = new DefaultComboBoxModel<Integer>(); for (Integer i : ageList) { modelAge.addElement(i); } JComboBox<Integer> ageEntries = new JComboBox<Integer>(); ageEntries.setModel(modelAge); ageEntries.addActionListener(new

How can I change the highlight color of a focused JComboBox

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Let me first explain what I'm looking to achieve. I'm creating a data entry form in Swing, made up of a number of JComboBoxes & JTextFields. A validation routine iterates over those components and determines if the values specified for each control are 'valid' (the details of the validation are irrelevant for the purposes of this example). When the routine identifies that a component contains an invalid value, I want to change the background color of that field, and also the foreground/text color of that field - to make it clear to the user that there is a problem with that field. Where a

Filling combobox from database by using hibernate in Java

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Heyy; I am developing a small swing based application with hibernate in java. And I want fill combobox from database coloumn. How I can do that? And I don't know in where(under initComponents , buttonActionPerformd ) I need to do. For saving I'am using jbutton and it's code is here : private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { int idd=Integer.parseInt(jTextField1.getText()); String name=jTextField2.getText(); String description=jTextField3.getText(); Session session = null; SessionFactory sessionFactory = new Configuration().configure() .buildSessionFactory();

JComboBox in a JTable cell

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I have a JTable created using a model, which is based on a matrix of objects. For each row, I want to put in a specific column (the 5th) some information using a JComboBox. I have tried the following: for(int i=0; i < n ; i++) { ..... data[i][5] = new JComboBox(aux); // aux is a Vector of elements I wanna insert } table.setModel(new MyTableModel()); // MyTableModel() already takes into consideration the data[][] object The problem is that data[i][5] = new JComboBox(aux); does not create a JComboBox object in that specific cell of the JTable, but pastes a code into the row. What can I do to

Binding comboboxes in swing

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问题 I'm working on a desktop (swing) application with Eclipse IDE. I have three comboboxes (countries, states and cities) and I need to update the data automatically when I selecting a new country or province. I searched lot of information, but all the implementations I found are made on Ajax or the beansbinding framework in NetBeans. I tried a solution by ItemEvent, but I have problems starting my application it loads the list of countries but not the other lists. And by selecting a country is

How can I change the arrow style in a JComboBox

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Let's say I want to use a custom image for the arrow in JComboBox, how can I do this? I understand it's possible using the synth xml files, or maybe even UIManager.put(...), but I don't know how. All I want to do at this time is change the arrow image to something else, either programatically or even just overriding the image it uses. How exactly can I do this? You can override createArrowButton() in BasicComboBoxUI . BasicArrowButton is a convenient starting point. class ColorArrowUI extends BasicComboBoxUI { public static ComboBoxUI createUI(JComponent c) { return new ColorArrowUI(); }

JComboBox autocomplete

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How do I perform auto-complete in editable JComboBox in Netbeans 7.1 like in ComboBox in VB dot net. I have a combo box with a list binding, I want to select item by typing only some first letter of the item in the list for example if a list has kitten , then it should be chosen when I type ki . Robin If you want to do this yourself, you can follow the steps explained in this article . this.comboBox = new JComboBox(new Object[] { "Ester", "Jordi", "Jordina", "Jorge", "Sergi" }); AutoCompleteDecorator.decorate(this.comboBox); I developed a custom swing JComboBox named " AutoComboBox " which