Java tutorial
import javax.swing.JButton; import javax.swing.JTabbedPane; public class Main { public static void main(String[] argv) throws Exception { JTabbedPane pane = new JTabbedPane(); String label = "Tab Label"; String tooltip = "Tool Tip Text"; pane.addTab(label, null, new JButton("Button"), tooltip); int index = pane.getTabCount() - 1; tooltip = pane.getToolTipTextAt(index); tooltip = "New Tool Tip Text"; pane.setToolTipTextAt(index, tooltip); } }