JLabel : Java Glossary

JLabel

is a component used to display decorative text on the screen to label some other component. The user cannot ever modify the text, unlike JTextfields. In AWT (Advanced Windowing Toolkit) you use Label, in Swing JLabel.JLabel.setHorizonalAlignment ( JLabel. LEFT ) or JLabel.setHorizonalAlignment( JLabel. RIGHT ) lets you control the justification or the shortcut specification in the constructor. You control positioning of the text within the JLabel with setHorizonalAlignment and setVerticalAlignment and with setBorder.

Gotchas

The background colour setBackground() is ignored unless you do a setOpaque( true ).
Unlike a JTextField, you don’t use setContentType( "text/html" ) to embed HTML (Hypertext Markup Language) in the text.

Learning More

Oracle’s Javadoc on JLabel class : available:

on the web at Oracle.com
in the current JDK 1.7.0_02 or in the old JDK 1.6.0_30 on your local Windows J: drive.

Oracle’s tutorial on Jlabel

AWT
JTextField
Label
layout
margin
setOpaque
Swing

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