How to start a application with a login window?

Question

hi there
does anyone have any idea on how to start an application with a login window? a login window is the first frame or window to be displayed when an application starts running. and only correct login id and password have been entered the real application will start. any sample out there? thank you.

Answer 1

You can start a new thread by making a thread object and passing it an implementation of a runnable object. Runnable has just one method, public void run(), this is was gets executed in a second thread. perhaps the code you would use would look something like this.
<code>
// set up thread for login window
new Thread(new Runnable() {
public void run() {
// construct your login window here
// when you are done processing the
// password....
if(goodPassword) {
authorized = true; // a global variable
notifyAll(); // don't forget this
else {
System.exit(42);
}).start();
// control does not stop this code gets executed while
// the above thread is running.
// Set up main program here. This is done in the
// backround.
while(!authorized) {
synchronized(this)
{ wait(50); }
// now when the user logs in this frame pops
// up real quick.
myFrame.setVisible(true);
</code>
Hope you can figure it out.. good luck :)