timertask

As you hopefully know you can use lambdas in Java 8, for example to replace anonymous methods. An example can be seen here of Java 7 vs Java 8: Runnable runnable = new Runnable() { @Override public void run() { checkDirectory(); } }; Can be expressed as both the following ways in Java 8: Runnable runnable = () -> checkDirectory(); or Runnable runnable = this::checkDirectory; This is because Runnable is a functional interface, having only one (abstract) public non-default method. However... For TimerTask we have the following: TimerTask timerTask = new TimerTask() { @Override public void run()

We want to run a task every 1000 seconds (say). So we have timer.scheduleAtFixedRate(task, delay, interval); Mostly, this works fine. However, this is an embedded system and the user can change the real time clock. If they set it to a time in the past after we set up the timer, it seems the timer doesn't execute until the original real-time date/time. So if they set it back 3 days, the timer doesn't execute for 3 days :( Is this permissible behaviour, or a defect in the Java library? The Oracle javadocs don't seem to mention anything about the dependency or not on the underlying value of the

I was searching over the internet for last 2 days but I couldn't find any tutorial helpful. I have created a service and I am sending a notification in status bar when the service starts. I want that service to stop after showing the notification and start it again after 5 minutes. Please let me know if it is possible and provide me some helpful tutorials if you have any. I heard of TimerTask and AlarmManager and I tried to use them as well but I wasn't able to get the desired result. EDIT: I need the service to be started every 5 minutes even if my application is not running. You do not want

public Button stb; static int cnt=0; public ArrayList<RadioButton> Butgrp1 = new ArrayList<RadioButton>(); Timer myt; TimerTask t; stb.setOnClickListener(new OnClickListener() { public void onClick(View v) { myt.mschedule(new TimerTask() { @Override public void run() { // TODO Auto-generated method stub System.out.println("Entering run"); Handler h=new Handler(); h.post(new Runnable() { public void run() { // TODO Auto-generated method stub runOnUiThread(new Runnable() { public void run() { // TODO Auto-generated method stub Butgrp1.get(cnt).setChecked(true); cnt=cnt+1; if(cnt>4) cnt=0; if(cnt