How to assign tool tips for JTabbedPane tabs?
To set a tool tips for JTabbedPane's tabs you need to pass the tool tips when adding a new tab to the JTabbedPane. The addTab() method accept the following parameters: the tab's title, image icon, a component that is going to be the content of the tabs and a string of tool tips information.
When you hover your mouse to the JTabbedPane's tabs the tool tips will be shown on the screen. Here is an example how you can can add tool tips the JTabbedPane's tabs.