The following example illustrates use of WindowFocusEvent with AWT Frame.
FrameFocusEvent(): Code illustrating WindowFocusListener with AWT Frame is written here.
new FrameFocusEvent(): Create object for the class FrameFocusEvent
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import java.awt.*;
import java.awt.event.*;
class FrameFocusEvent extends Frame implements WindowFocusListener
{
public FrameFocusEvent()
{
createAndShowGUI();
}
private void createAndShowGUI()
{
setTitle("Frame with FocusListener demo");
setLayout(new FlowLayout());
// Add window focus listener
addWindowFocusListener(this);
setSize(400,400);
setVisible(true);
}
public void windowGainedFocus(WindowEvent we)
{
setBackground(Color.WHITE);
}
public void windowLostFocus(WindowEvent we)
{
setBackground(Color.LIGHT_GRAY);
}
public static void main(String args[])
{
new FrameFocusEvent();
}
}
FrameFocusEvent(): Code illustrating WindowFocusListener with AWT Frame is written here.
new FrameFocusEvent(): Create object for the class FrameFocusEvent
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