Facing difficulties in dragdrop event handler while moving images from tilelist to canvas

Question

1) my tile list contains images which are coming from
database.
2) i have to drag and drop those images from tile list to
canvas.
3) In tile list we don't have to write mouseMove event
handler where we can define dragInitiator . (if dragEnabled = true)
4) my dragEnter and dragOver is working properly . Problem is
in dragDrop .
5 ) how can i collect there dragged image
(event.draggedsource.....what must be write)
ERROR : Cannot access a property or method of a null object
reference

Answer 1

import java.util.Timer;
import java.util.TimerTask;
public class Test {
    public static void main (String[] args) {
        final Timer timer = new Timer ();
        System.out.println ("I'm gonna do something in 5 seconds.");
        timer.schedule (new TimerTask () {
            public void run () {
                System.out.println ("Time's up !");
                timer.cancel ();
        }, 5000);
}if you want to display the time left it's better to make your own Thread that updates a "timeleft variable:
{code}
public class Test {
//set the time Left to 3 mins.
private long secondsLeft = 3 * 60;
public Test () {
new Thread (new Runnable () {
public void run () {
try {
while (secondsLeft > 0) {
//Let's update the timer every second.
Thread.sleep (1000);
secondsLeft = secondsLeft - 1;
System.out.println ("Time left: " + (secondsLeft / 60) + ":" + (secondsLeft % 60));
System.out.println ("Grats !");
} catch (InterruptedException e) {}
}).start ();
public static void main (String[] args) {
new Test ();
{code}