A JToolTip is a subclass of JComponent class and we can create a tooltip for any java component by using setToolTipText() method, it can be used to set up a tooltip for the component. The important methods of a JToolTip class are getAccessibleContext(), getComponent(), paramString() and updateUI(). We can change both the background and foreground color of a JToolTip class by using the put() method of UIManager class and pass the arguments ToolTip.background and ToolTip.foreground.
Example
import java.awt.*; import javax.swing.*; public class JTooltipColorTest extends JFrame { private JLabel label; public JTooltipColorTest() { setTitle("JTooltipColor Test"); setLayout(new FlowLayout()); label = new JLabel("Welcome to TutorialsPoint"); label.setToolTipText("Simply Easy Learning"); UIManager.put("ToolTip.background", Color.white); // to change background color of a JTtoolTip UIManager.put("ToolTip.foreground", Color.green); // to change foreground color of a JToolTip add(label); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setVisible(true); } public static void main(String[] args) { new JTooltipColorTest(); } }