Swing 简明教程

SWING - Controls

每个用户界面都考虑以下三个主要方面：

Every user interface considers the following three main aspects −

UI Elements − These are the core visual elements the user eventually sees and interacts with. GWT provides a huge list of widely used and common elements varying from basic to complex, which we will cover in this tutorial.
Layouts − They define how UI elements should be organized on the screen and provide a final look and feel to the GUI (Graphical User Interface). This part will be covered in the Layout chapter.
Behavior − These are the events which occur when the user interacts with UI elements. This part will be covered in the Event Handling chapter.

每个 SWING 控件都从以下组件类层次继承属性。

Every SWING controls inherits properties from the following Component class hiearchy.

S.No.

Class & Description

ComponentA Component is the abstract base class for the non menu user-interface controls of SWING. Component represents an object with graphical representation

ContainerA Container is a component that can contain other SWING components

JComponentA JComponent is a base class for all SWING UI components. In order to use a SWING component that inherits from JComponent, the component must be in a containment hierarchy whose root is a top-level SWING container

SWING UI Elements

以下是使用 SWING 设计 GUI 时常用的控件列表。

Following is the list of commonly used controls while designing GUI using SWING.

S.No.	Class & Description
1	JLabelA JLabel object is a component for placing text in a container.
2	JButtonThis class creates a labeled button.
3	JColorChooserA JColorChooser provides a pane of controls designed to allow a user to manipulate and select a color.
4	JCheck BoxA JCheckBox is a graphical component that can be in either an on (true) or off (false) state.
5	JRadioButtonThe JRadioButton class is a graphical component that can be in either an on (true) or off (false) state. in a group.
6	JListA JList component presents the user with a scrolling list of text items.
7	JComboBoxA JComboBox component presents the user with a to show up menu of choices.
8	JTextFieldA JTextField object is a text component that allows for the editing of a single line of text.
9	JPasswordFieldA JPasswordField object is a text component specialized for password entry.
10	JTextAreaA JTextArea object is a text component that allows editing of a multiple lines of text.
11	ImageIconA ImageIcon control is an implementation of the Icon interface that paints Icons from Images
12	JScrollbarA Scrollbar control represents a scroll bar component in order to enable the user to select from range of values.
13	JOptionPaneJOptionPane provides set of standard dialog boxes that prompt users for a value or informs them of something.
14	JFileChooserA JFileChooser control represents a dialog window from which the user can select a file.
15	JProgressBarAs the task progresses towards completion, the progress bar displays the task’s percentage of completion.
16	JSliderA JSlider lets the user graphically select a value by sliding a knob within a bounded interval.
17	JSpinnerA JSpinner is a single line input field that lets the user select a number or an object value from an ordered sequence.