这是一种解决方法：
import javax.swing.*;import javax.swing.plaf.*;import java.awt.event.*;public class JTabBug{ public static void main(String[] args) { JTabbedPane jTabbedPane = new JTabbedPane() { @Override public String getToolTipText(MouseEvent e) { int index = ((TabbedPaneUI)ui).tabForCoordinate(this, e.getX(), e.getY()); if (index != -1) { JComponent component = (JComponent)getTabComponentAt(index); return component.getToolTipText(); } return super.getToolTipText(e); } }; ToolTipManager.sharedInstance().registerComponent(jTabbedPane); jTabbedPane.addTab("Red", new JLabel("Roses")); jTabbedPane.addTab("Blue", new JLabel("Skies")); jTabbedPane.addTab("Green", new JLabel("Grass")); for (int i = 0; i < jTabbedPane.getTabCount(); i++) { JLabel tabComponent = new JLabel(jTabbedPane.getTitleAt(i)); tabComponent.setToolTipText("Tip: " + tabComponent.getText()); ToolTipManager.sharedInstance().unregisterComponent(tabComponent); jTabbedPane.setTabComponentAt(i, tabComponent); } Jframe jframe = new Jframe("Testing"); jframe.add(jTabbedPane); jframe.setSize(400, 500); jframe.setVisible(true); jframe.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE); }}
