We have seen earlier BoxLayout manager where the components are set in X and Y axes directions. Now let us go for another exclusive Swing manager, OverlayLayout. As the name indicates, one component can be placed on the top of the another. When different sizes are given, the components can be all be seen. User …
Following links give you the Swing components – programs, output screen and explanation. Swing basics 1. Java JFC Swing Introduction 2. Swing Overview Are you interested in Swing – Input and Output? 1. Output: Swing JOptionPane – Displaying Message 2. Input: Swing JOptionPane – Taking User Input Total 4 programs are given on JButton: 1. …
JScrollPane scrolls to view the contents of the component added to it. Scrollbars are used to scroll the contents horizontally and vertically. From JDK 1.4, new methods for mouse wheel movements are added like processMouseWheelEvent(MouseWheelEvent) etc. The mouse wheel can be used to enlarge a photo by rotating the wheel in the display area. Following …
JTable displays data in horizontal and vertical columns in a two-dimensional format. The table can be resized or moved. Here, table is created and added to a scroll pane. In turn, scroll pane is added to the container. We create a JTable and add it to a scroll pane. Then, scroll pane is added to …
JTree is a swing component that can be used to display a hierarchy of data like Window Explorer. Each element in the tree becomes a node. For a node another node can be added thus constructing a tree. Nodes are expandable and collapsible. Collapsible nature hides some nodes, thus the user is not shown the …
Applet cum Application: A single program can be made to work as an Applet and also as an Application (that is, running the program as an Applet and Application). It is of Programming logic importance rather than realtime job. In an applet, we can include a main() method that can be called implicitly by Java …
ProgressMonitor monitors the progress of the operation. Displays in percentage of completion of the operation. Example on ProgressMonitor import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ProgressiveTest { public static void main (String args[]) { JFrame frame = new JFrame(“Swing’s ProgressMonitor”); JButton button = new JButton(“Start Iteration”); frame.getContentPane().add(button, BorderLayout.CENTER); int min = 0; int max …
BoxLayout lays out the components in a horizontal or vertical line. An axis – either BoxLayout.X-AXIS or BoxLayout.Y-AXIS is specified at the time of construction and determines the orientation of the components. Components laid out along the x-axis are laid out horizontally, and components laid out along the y-axis are laid out vertically. Components are …
Swing JColorChooser gets your own color palette. The color you selected either with RGB or HSB style can be applied to any Swing component. In the program,it is applied to Container (indirectly to JFrame). Example on JColorChooser import java.awt.*; import java.awt.event.*; import javax.swing.*; public class JColorChooserDemo extends JFrame implements ActionListener { JButton btn; Color clr; …
JDesktopPane – Multiple Document Interface (MDI) Many of today’s applications use a multiple document interface (MDI) [i.e., a main window (often called the parent window) containing other windows (often called child windows)] to manage several open documents that are being processed in parallel. Many commercial Window products such as Microsoft PowerPoint, Corel Draw, Symantec Visual …
JMenu program comprises of menu bar, menus, menu items and separators etc. JMenuItem can be added with images, check boxes, combo boxes etc. Some objects in this program are declared final and if not they cannot be accessed from inner classes. Example on JMenu import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.*; // for Vector …
JSliders enable the user to select from a range of integer values. Class JSlider inherits form JComponent. The following program creates a horizontal JSlider with tick marks and the thumb that allows the user to select a value. JSliders can be customized so that they can display major tick marks, minor tick marks and labels …
JTabbedPane: Tabbed pane is a common user interface component that provide an easy access to more than one panel(like CardLayout manager ). Each tab is associated with a single component that will be displayed when the tab is selected. In the following JTabbedPane program, three tabs are added to the tabbed pane. 3 classes are …
A JPopupMenu appears anywhere on the screen when a right mouse button is clicked. Following program creates your own popup menu with your choicest menu items. Here, left mouse click does not generate any event. Popup menu appears on the frame when a right mouse button is clicked and that too at the same point …
The limitation of JTextField is that we can enter or display the text in one line only. This limitation is overcome with JTextArea. In JTextArea, we can enter or display any number of lines of text. We can make a text area not to be used by the user by using setEditable(false) method. Like class …
In the previous program, you have seen JList with single selection. Now let us go for JList Multiple Selection. In the following JList Multiple Selection example, user’s multiple selected items are displayed in JOptionPane using showMessageDialog() method. import javax.swing.*; import java.awt.*; import java.awt.event.*; import javax.swing.event.*; // for ListSelectionListener public class MultiSelectionDemo extends JFrame implements ListSelectionListener …
A list displays a series of items from which the user may select one or more items. Lists are created with class JList, which inherits from class JComponent. Class JList supports both single-selection lists (i.e., lists that allow only one item to be selected at a time) and multiple-selection lists (lists that allow any number …
A JComboBox (sometimes called a drop-down list) provides a list of items from which the user can make a selection. Combo boxes are implemented with class JComboBox, which inherits from class JComponent. JComboBox generates ItemEvent like JCheckBox and JRadioButton. Its counterpart in AWT is Choice. In the following JComboBox example a combo box and text …
This is an exclusive program on JRadioButton and ButtonGroup. To group six radio buttons, two objects of ButtonGroup are created and for each group three radio buttons are added. User’s selection is displayed using JOptionPane showMessageDialog() method. There is no counterpart class for this class in java.awt package; it is a new introduction in javax.swing …
Following is an exclusive program on JCheckBox. The text font in a text field is changed as per the JCheckBox selected by the user. Four JCheckBox objects are created for font name, font style, font size and to close the JFrame. The counterpart of JCheckBox in java.awt is Checkbox. Example on JCheckBox import javax.swing.*; import …
