ToolTipText

It is that a ToolTipText will be shown when you make a movement with the mouse. It will help you get more information of the Button you are ready to press.Then make some explains of it:

String tooltiptext1="Click me";

String tooltiptext2=""+"tooltiptext in
Multine";

//It's a sentence of the HTML.

JButton jb1=new JButton();

JButton jb2=new JButton();

jb1.setToolTipText(tooltiptext1);

jb2.setToolTipText(tooltiptext2);