javaxswingJLabel

The javax.swing.JLabel class is a Swing component used to display text or an image, or both. It is a non-editable component, meaning the user cannot change its content. JLabels are commonly used to provide descriptive text for other Swing components, such as JTextFields or JComboBoxes, or to display icons or images within a graphical user interface.

A JLabel can be instantiated with just text, just an icon, or both. The text can be set using the setText() method, and the icon can be set using the setIcon() method. The horizontal and vertical alignment of the text and icon within the label can be controlled using the setHorizontalAlignment() and setVerticalAlignment() methods, respectively. Common alignment constants include SwingConstants.LEFT, SwingConstants.CENTER, and SwingConstants.RIGHT for horizontal alignment, and SwingConstants.TOP, SwingConstants.CENTER, and SwingConstants.BOTTOM for vertical alignment.

JLabels can also be associated with an "accelerator" key, which allows a user to quickly navigate to and activate the component that the label is associated with by pressing a modifier key (like Alt) along with a specified character. This is achieved by using the setDisplayedMnemonic() method. The setLabelFor() method is used to link a JLabel to another component, establishing the relationship for keyboard navigation.

In summary, javax.swing.JLabel is a versatile component for displaying static information in a Swing application, offering options for text, images, and keyboard accessibility features.