ToolTip : Java Glossary

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ToolTip
Aka hoverhelp, value tip, flyover help, or flyover label. Explanatory text that pops up when you let your mouse linger over an icon or component without clicking it. The text goes away automatically when you move your mouse. You don’t have to dismiss it with a click the way you would with a dialog box. Java makes it very easy to add tooltips to your GUI (Graphic User Interface) application because every Swing component supports JComponent. setToolTipText. 
// adding ToolTips to your JComponents

final JTextField schemeNameText = new JTextField();
schemeNameText.setToolTipText( "Name of the color scheme" );

final JComboBox  fontStyleChoice = new JComboBox();
fontStyleChoice.setToolTipText( "select font style" );

You can right align the tooltip by including <html><p align="right"> as the first characters of the tooltip String. This will be useful for languages that flow right to left.

That’s all there is to it. You don’t normally need to get involved with any of the other classes and methods.

Learning More

Oracle’s Javadoc on JComponent.setToolTipText : available:
Oracle’s Javadoc on JToolTip class : available:
Oracle’s Javadoc on ToolTipManager class : available:
Oracle’s Javadoc on BasicToolTipUI class : available:
Oracle’s Javadoc on MultiToolTipUI class : available:
Icon
JComponent
JDialog
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