Best books about JAVA programming:

• Head First JAVA, Second Editon
• Effective Java Programming Language Guide
• Professional Java, JDK 5 Edition
• Ivor Horton's Beginning Java 2, JDK 5 Edition

JAVA JToolTip

This example shows how to customize the location of JTooltip. JTooltip could be adjusted to show anywhere.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ToolTipLocationExample extends JFrame {
public ToolTipLocationExample() {
super("ToolTip Location Example");

// above position
JButton buttonAbove = new JButton ("Above") {
public Point getToolTipLocation(MouseEvent e) {
return new Point(20, -30);
}
};
buttonAbove.setToolTipText("Hello world");

// blow (default) position
JButton buttonBelow = new JButton ("Below");
buttonBelow.setToolTipText("Hello world");

// whatever
final RelocatableToolTipButton buttonRelocate =
new RelocatableToolTipButton ("Relocate");
buttonRelocate.setToolTipText("Hello world");
buttonRelocate.addActionListener(new ActionListener() {
JPanel messagePanel = createPanel();
JTextField locationX, locationY;

public void actionPerformed(ActionEvent e) {
Point p = buttonRelocate.getToolTipLocation(null);
if (p == null) {
locationX.setText("default");
locationY.setText("default");
} else {
locationX.setText(Integer.toString(p.x));
locationY.setText(Integer.toString(p.y));
}
int result = JOptionPane.showOptionDialog(ToolTipLocationExample.this,
messagePanel,
"Location",
JOptionPane.OK_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,null,null);
if (result == JOptionPane.OK_OPTION) {
try {
int x = Integer.parseInt(locationX.getText());
int y = Integer.parseInt(locationY.getText());
buttonRelocate.setToolTipLocation(new Point(x,y));
} catch (NumberFormatException ex) {
ex.printStackTrace();
}
}
}

private JPanel createPanel() {
JPanel p = new JPanel();
p.setLayout(new BoxLayout(p, BoxLayout.X_AXIS));
p.add(new JLabel(" X: "));
p.add(locationX = new JTextField());
p.add(new JLabel(" Y: "));
p.add(locationY = new JTextField());
return p;
}
});

JPanel panel = new JPanel();
panel.add(buttonAbove);
panel.add(buttonBelow);
panel.add(buttonRelocate);
Container c = getContentPane();
c.setLayout(new BoxLayout(c, BoxLayout.Y_AXIS));
c.add(Box.createVerticalStrut(30));
c.add(panel);
}

class RelocatableToolTipButton extends JButton {
Point toolTipLocation;

RelocatableToolTipButton(String label) {
super(label);
toolTipLocation = null;
}

public Point getToolTipLocation(MouseEvent e) {
return toolTipLocation;
}

public void setToolTipLocation(Point location) {
toolTipLocation = location;
}
}

public static void main (String args[]) {
ToolTipLocationExample frame = new ToolTipLocationExample();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setSize (300, 130);
frame.setVisible(true);
}
}