#SWING SET ICON IMAGE HOW TO#
#SWING SET ICON IMAGE CODE#

is created from this subclass of the AbstractTableModel This instance initializer creates the data when an object TableModel dataModel = new AbstractTableModel () SetDefaultCloseOperation (EXIT_ON_CLOSE) either selects Close from the System menu or clicks the X Exit the application by calling System.exit when the user contents of title appear in the JFrame's title bar. Pass the title argument to the JFrame superclass so that the

#SWING SET ICON IMAGE CODE#

Listing 5 The TableHeaderIcons application source code // TableHeaderIcons.java ThisĪpplication was used to generate the GUI in Figure 8 and shows how easy it is Listing 5 presents source code to a TableHeaderIcons application. With an object created from the renderer class. Then call TableColumn's setHeaderRenderer method Method to retrieve a reference to a TableColumn object that describes To specify an icon for a particular column, call JTable's getColumn

To a JLabel constructor during the creation of a JLabel object.Īfter making a few other changes, this JLabel object can be returned The above code fragment creates an ImageIcon object that loads an icon Represents the rendering component: JLabel l = new JLabel (new ImageIcon ('icon.gif')) The following code fragment creates a JLabel object that What component can be used to perform this rendering? How about a componentīased on the JLabel class? After all, JLabel is capable of renderingĪn icon image. In turn, this method returns a component capable of rendering the column That implements the TableCellRenderer interface by providing a getTableCellRendererComponent To display an icon in a column header, first establish a renderer (aĬomponent that draws graphics) for that column header. Program to create a blank label and add text to it.Special Edition Using Java 2, Standard Editionĭid you know that icon images can be displayed in a table component's columnĪssigning icons to a JTable component's header columns makes them setText(String s) : sets the text that the label will display to string sġ.getText() : returns the text that the label will display.setIcon(Icon i) : sets the icon that the label will display to image i.getIcon() : returns the image that the label displays.JLabel(String s, Icon i, int align) : creates a new label with a string, an image and a specified horizontal alignment.JLabel(Icon i) : creates a new label with a image on it.JLabel(String s) : creates a new label with the string specified.JLabel() : creates a blank label with no text or image in it.By default labels are vertically centered but the user can change the alignment of label. JLabel is inactive to input events such a mouse focus or keyboard focus.

JLabel is only a display of text or image and it cannot get focus. JLabel is used to display a short string or an image icon.

Check if given string contains all the digits.

#SWING SET ICON IMAGE HOW TO#

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