Mega Code Archive
Frame (MainFrame)
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/* This is an example of a Frame that exits the application when it is asked to close itself. Applications that want that behavior for their main frame can define a subclass of this class. */
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
/**
* This is an example of a Frame that exits the application when it is
* asked to close itself. Applications that want that behavior for their
* main frame can define a subclass of this class.
* <p>
* This class requires java 1.1 or later to work.
*/
public class MainFrame extends Frame {
/**
* Constructs a new MainFrame that is initially invisible.
*/
public MainFrame() {
this("");
}
/**
* Constructs a new, initially invisible MainFrame with the specified
* title.
* @param title the title for the frame
*/
public MainFrame(String title) {
super(title);
// Subclass WindowAdapter instead of implement WindowListener so
// that we only need to override one method instead of
// implementing seven methods.
WindowListener listener;
listener = new WindowAdapter()
{
public void windowClosing(WindowEvent evt) {
exit();
} // windowClosing(WindowEvent)
};
addWindowListener(listener);
} // constructor(String)
/**
* Override this method to verify that exiting is OK before actual
* exit.
*/
protected void exit() {
System.exit(0);
} // exit()
} // class MainFrame
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