ADVANCED GUIS AND GRAPHICS - Java Programming: From Problem Analysis to Program Design - page 835

normal curve. Below the label showing an image is a JLabel that displays the name of
the image. For example, in Figure 12-17, this label displays the text Normal Curve .
The top and the bottom labels display a line of text, so they are manipulated using strings
as labels. The label showing an image is manipulated using images. For this program, we
include five JPEG images. The following statement creates the JLabel object promptJL
with Select an Image as its label and sets the justification of the label to center:
private JLabel promptJL = new JLabel("Select an Image",
SwingConstants.CENTER);
The following statements declare displayPicJL and infoJL to be reference variables of
the JLabel type:
private JLabel displayPicJL;
private JLabel infoJL;
We use displayPicJL to display the image and infoJL to display the name of the
image, as shown in Figure 12-17. The following paragraphs explain how to change the
text and image of these labels during program execution.
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FIGURE 12-17 GUI using JList and JLabel
We now discuss how to create the JList with five items. For the most part, creating a
JList is similar to creating a JComboBox . To create a JList , we first declare a reference
variable as follows:
private JList pictureJList;