Best answer: What is ComboBox control in Java?

A combo box is a combination of a text field and a drop-down list from which the user can choose a value. If the text-field portion of the control is editable, the user can enter a value in the field or edit a value retrieved from the drop-down list. You use the JComboBox class to create combo boxes.

What is ComboBox explain with example?

A combo box is a commonly used graphical user interface widget (or control). Traditionally, it is a combination of a drop-down list or list box and a single-line editable textbox, allowing the user to either type a value directly or select a value from the list.

What is the use of combo box?

A combo box is a combination of a standard list box or a drop-down list and an editable text box, thus allowing users to enter a value that isn’t in the list. An editable drop-down list is a combination of a drop-down list and an editable text box.

What are the two types of ComboBox?

Combo Box Types

  • A simple combo box consists of an edit box with an attached list box. …
  • A drop-down list box consists of a static text box that represents the currently selected item, and a drop-down list representing a list of items.
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How do you create a drop-down list in Java Swing?

Java JComboBox Example with ActionListener

  1. import javax.swing.*;
  2. import java.awt.event.*;
  3. public class ComboBoxExample {
  4. JFrame f;
  5. ComboBoxExample(){
  6. f=new JFrame(“ComboBox Example”);
  7. final JLabel label = new JLabel();
  8. label.setHorizontalAlignment(JLabel.CENTER);

What is ComboBox explain in detail?

A combo box is a GUI feature that combines a drop-down box, list box, and/or an editable text field, giving the user multiple ways to input or select the desired information. The term “combo box” may also refer specifically to a drop-down list, which only allows choices to be selected (user cannot type a value).

How does a ComboBox work?

A ComboBox displays a text box combined with a ListBox, which enables the user to select items from the list or enter a new value. The DropDownStyle property specifies whether the list is always displayed or whether the list is displayed in a drop-down. … The list then displays the default string value for each object.

What is the difference between ComboBox and ListBox?

In a listbox, you can see and allow for the selection of multiple items. A combobox is a drop-down list and can only ever have one item selected.

How do you clear a ComboBox in Java?

this. combo. removeAllItems(); to remove all the items in JComboBox.

Which are the important properties of ComboBox control?

Important Properties of the ComboBox

Property Description
Items This property is used to get an object representing the collection of the items contained in this ComboBox control.
MaxDropDownItems This property is used to set the maximum number of items to be shown in the drop-down portion of the ComboBox control.
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What is combobox in HTML?

The combo box is basically an HTML INPUT of type text and HTML SELECT grouped together to give you a combo box functionality. You can place text in the INPUT control by using the SELECT control or type it in directly in the text field.

What are the style properties of combobox?

The set of combo box common properties includes:

  • TITLE. Combo boxes do not have titles.
  • VALUE. Combo boxes have alphanumeric values that represent the data in the entry field portion of the control. …
  • SIZE. …
  • COLOR. …
  • DROP-DOWN. …
  • STATIC-LIST. …
  • DROP-LIST. …
  • UNSORTED.

What is the difference between ListBox and combobox in VB?

The List box displays all the items at once in a text area, whereas the combo box displays only one item at a time. … The Listbox represents a Windows control that displays a list of items to a user. A user can select an item from the list.

What is JscrollPane in Java Swing?

A JscrollPane is used to make scrollable view of a component. When screen size is limited, we use a scroll pane to display a large component or a component whose size can change dynamically.

What is JOptionPane in Java?

The JOptionPane class is used to provide standard dialog boxes such as message dialog box, confirm dialog box and input dialog box. These dialog boxes are used to display information or get input from the user. The JOptionPane class inherits JComponent class.

What is JList in Java?

JList is a component that displays a set of Objects and allows the user to select one or more items . JList inherits JComponent class. JList is a easy way to display an array of Vectors . … JList(E [ ] l) : creates an new list with the elements of the array.

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