JLabel, descended from JComponent, is used to create text labels. A JLabel object provides text instructions or information on a GUI — display a single line of read-only text, an image or both text and image. We use a Swing JLabel when we need a user interface component that displays a message or an image.

• Features:

• => Provide text instructions on a GUI
• => label is a Read-only text
• => label Programs rarely change a label’s contents
• => labelClass JLabel (subclass of JComponent)

 

Constructors:

JLabel() - Creates a JLabel instance with no image and with an empty string for the title.

JLabel(Icon image) - Creates a JLabel instance with the specified image.

JLabel(Icon image, int horizontalAlignment) - Creates a JLabel instance with the specified image and horizontal alignment.

JLabel(String text) - Creates a JLabel instance with the specified text.

JLabel(String text, Icon icon, int horizontalAlignment) - Creates a JLabel instance with the specified text, image, and horizontal alignment.

JLabel(String text, int horizontalAlignment) - Creates a JLabel instance with the specified text and horizontal alignment.